[05
r--55
no-500
REPLACEMENT
REVISED ED. AVAILABLE
/979
Hyslop Field Laboratory
Microstation Climate Survey
(tr J
sg o
`141\
LIIRRARY
1
7:i
.
'eC71
OREGON STATE
UNIVERSITY
r".
r,KICQ).
16P/6
(Special Report 1
August 1978
Agricultural Experiment Station ,
Oregon State University, Corvallis
CONTENTS
Probability of Frost
1
Average Daily Solar Radiation 2
Average Relative Humidity 3
Monthly Evaporation
4
Wind Frequency, Salem 5
Wind Frequency, Eugene 6
Daily Normal Temperatures
7
Extreme Values of Temperature and Precipitation 11
Weekly Mean Soil Temperature 23
AUTHORS: Wheeler Calhoun, Crop Science Department, Oregon
State University; Earl M. Bates, National Weather Service,
United States Department of Commerce, National Oceanic and
Atmospheric Administration.
PROBABILITY DATES OF
VARIOUS TEMPERATURE OCCURRENCE
WILLAMETTE VALLEY
Fifty Per Cent Chance Of:
Albany
Corvallis
Eugene
Forest Grove
Portland
Salem
24°
28°
January 21
January 28
January 21
February 10
January 15
February 1
February 20
February 27
March 6
March 29
January 24
March 9
32°
April 2
April 15
April 8
April 26
February 28
April 19
Twenty Per Cent Chance Of:
28°
32°
March 12
March 19
March 28
April 18
February 13
March 29
April 17
April 30
April 23
May 11
March 15
May 4
24°
Albany
Corvallis
Eugene
Forest Grove
Portland
Salem
February
February
February
March 5
February
February
13
20
13
7
24
Ten Per Cent Chance Of:
Albany
Corvallis
Eugene
Forest Grove
Portland
Salem
24°
28°
32°
February 25
March 4
February 25
March 17
February 19
March 8
March 21
March 28
April 6
April 27
February 22
April 7
April 26
May 9
May 2
May 20
March 24
May 13
1
U .-1d d LO CNJ l0 CV C- CD Lc) 1--.1 (:) Lc) LC) r-. Lc) lc)
U.-1
Li./ Is. 00 O1VD c3 03 k0
1-n
op l0 n:1" d- at co d-
r-4
C:)
r-4
CO re) CNJ LO r-4 CNJ CO CNJ
0O1 Cf1LOIOL0 CO
LID
LO qtr c\J mtr LC) kr) CD C\J
(:) c0
:7 4-4 Q0 LC) h. ,-1 r-4 (:) nth.r-4 C() C\J
CD LC) CX) CO CO LC) LC) CNJ
r-4 C\J CY) r--4 r-4 r-4 r-4 CNJ r-. r-. r-- CO r-. LC) m. LO
r-4 r4 r-4
:2: r-4 r-4 r-4 4-4 4-4 r-I -1
r-4
1-4
C:)
() (\J
c\j
C.) dr co CD c,0 r-.
r-4 r-1
In CY)
r-. (:) (:) r-4 r-.
r-4 r-4
1.11 00
01 CNJ CNJ (:)
mt
r-4 cr) (0 CD 01 co l() CC) r-. LC) C-1 CO r-. cr
LSD LC) CNJ CO CNJ LC) r-4
(1) 01 C1J CD (JD CD (:) LC) LO LO CD CO CO Cr) r-4 CD LC)
cv r4 CNJ C\J CNJ N C\J C\J COJ r-4 1-4 r-4 r-4 r-4 r-4 r-4 r-4 r-4 r-4 CSJ r-4
CD 01 cr) (Y) CNJ (\I (NJ (NJ C\1 CNJ
LO CY) .4:1" qd- CS) r-. 01 LC) r-4 CC) CO CX) CD r-. kt)
LC) (NJ CX) CV LC) 01 r-. r--
d- LC) co crl 40
r-f cm co ko
cO c0
LO
c0 r-. LO ce) CO C)
C\11 Cr) CO
dtrod- rococorocod- comcv C \ C \J CO Cr) CO
0- CO 01 01 CNJ CY)
Li co .zr kr) L0 d-
(/)
:4-
LLJ
--J
C
C1.1 Lf) CD %:11- CY) ce) LO Rd- CD C) CNJ r-4 r-. r-4 C1J 4-4 CY) CD Cr CD LC) r-4 CY) CX) VD C41 r-4 LC) LC) CX) (NJ
4.0 l0 LO CD CX) 44:1Cy) LO CO LC) r-4
LC) CX)
::) lC) CNJ CNJ 01 CD 01 r-4 041 LC) 01 LC1 LC) CX) CD c)
c4r Crl Ct Ct Ktt Lnee)Ce)
LOLOLOUI d Rd- Lfl Ct d mzr ‘4-
c7C
LC) Lc) co LO ed-
CD 0
Cr)
013)
.7C
—1
S..
CD
Mr-IC
tn
n-p
00 CO cc)
01 00 LC) CO r-1
C ) I-I 00
1.0 U) L0 U.)
kr)
CD '0 kr) ko
Lf) d LO LI) LO LC) L.0
(S •••••
(=> S-
LO kr) d- O1 cv 00 O1 00 co 10 CNJ
l0 LC) LI) Lf) LI) LI) Lt)
LO
1/40
l0
01
60 U) U.) Cr
r--
> trs
< < >
S-
CI
c) co co CO co co CO
Lf)
10 ko kr) I..° co
S- C)
r-- cit 01 CO 01 CD CD CO 0")
c0 r-. Cal LO r-4 LC) CO U) 01 01 VD VD r-- CD r-4 LO Cr)
::) LC) (NJ 4-4 00 (ID LC) CY, CY) C‘J ‘C) LC) md- CO 01 CNJ CD to co r-I LC) LC) al cnJ r-. r-4 CY) CNJ 4-4 L() CV
;2: r-.
< iss
>>- E
'3 U) to to to
c1C CO Lt.
›..
--J X SF∎4
(0
-
d-
Cr) LC) CY) LC) (0 CNJ
r-. CD
t.0 co kr) cv
kr)
LLI
d-
to LO
01
LO01LOO1
d-
LO 1.0
CNJ gd"
d- co dr kc) c0
./zr kr) in
1.0
cv co co rs.
d- co co .4. co co
kcp
tO to to to tO
LC) Lf) (NJ r-4
CT) C11 r-4
LI" LO CI" Lf)
Lf)
N1.0 re)
N. h..
c)
LC) kr)
r-.
kr) kr) L0
r•-. CD LC) CX) C31
03
LO I-0
C••1
co
to
ce >,
0_ "-I
crt M op ro CNJ d- Co co VD co
c) LO 00 00 M rs. k0 ON 10 M d 003 co
kr) crl kr) co
r-. (\I C‘J
kr) d- N 00 er)
Cr)
al
CO nzt- IC) kr) CNJ
ro co co co co co cv N co re) cv-) (Y) re) co co Cr) cv M cv M co M cv M M ro d- M re)
oo
re) co (NJ C)
r-4 r-.
`d cr., 01 r-4 kr) c - LC) co kc) cr)
al 01 CO Ctl
C:) C\J r-i
r-4
r-4 CY) 414- C\J co co d- r-4 LC) gd-
r-4
C1J
CNJ
CY) CY) CY.)
CNJ
CNJ
CNJ
CNJ
CNJ
r-4 CNJ Cs.1 CNJ CNJ C\I 04 CY) CY) C‘.1 C Y)
LC) k) r-. cri LC) N.
1-4
kr) k0 at co kr)
CC co (NJ 4..C) .g:t
r-4 r-4 1-4 1-4 r-4 CN.1
CNJ CNJ N
00 0) 0o Lo M Lo Ha, at 0.1 01 1--1 LO LC) NMCO h.
W (:) C1J C:) co
CNJ C)
(:)
RI' (NJ qtt- LC) 4-4 q:11' C\J
v-I v-I r-I 1-1 v-I I-4
r-I r-I
LL v-I r-1 v-i
>0.-4 CNJ (r) d LL) 4.C)
a3
O
00 01
q4"
r-I r-1 e-I
r-I
(\1
L0M01
4.0
r-. kc) kr) kr) co r-4 CNJ (:) C\J
r-I C I CV N r-4
LC) LC) C:) cv O1 '4:1- 01 CY) LC) r-4 00 C=) r-4 LC) I s. Rzr Rzir
LC) CO 01 (:) r-i md- nt- CNJ (:) C\J CY) 4-4 C\J CO CNJ C:) r-4
LC) et 01 CD CX) Rth (1J LC) r-4 C) LC)
r-- CC) CNJ c0 c0 co r-. r-.
r-4 op cr)
:2: IP
7
LC) LO M
v-1 v-I
I-1 r-I
r-I r-4
r-4 r-I
cX) 01 (:)
C\J Ce) nt LC) LC) r-- 00 al (:) r-4 C1J CY) 444- LC) LC)
CD
r-11-1v-II-1.-11--1r-11-1.-1r--ICVOLICNIC\1CLJC\IC\INCnlegre)
2
C\.1
C..)
U.3
CO
4-
OC)
00
1--1
01
(.3
O
oN
cc
Lc)
co
LLI
W
CO
In
1-1
cd-
1-4
01
l0
.4-
1--4
CO
0
01
CO
J CO U) CO 01
O
01 .4- CO
e•
CV 0
.4
LO .4 CO
cc
o_ 01 l0 U) cc
.tc
ct 01
LO
LO 03
0:1 CY) CO CO 01
W01 CO ..0 03
L
.4 00 4- (NJ
Q01 CO 00 01
11.1
MM
X Q .< 0— 0—
1--I
nzl- 0 4- 0
CROP SEASON MONTHLY EVAPORATION
From Standard Weather Bureau
Open Pan (1953-1972)
(inches)
Year
APR
MAY
JUNE
JULY
AUG
SEPT
OCT
1953
.73
2.64
3.43
6.77
5.48
4.13
1.65
1954
3.01
4.19
3.43
5.06
3.77
2.70
1.34
1955
1.16
4.44
5.04
5.30
6.72
4.25
1.30
1956
2.99
4.52
4.53
7.74
5.72
4.26
1.66
1957
2.71
3.43
4.62
7.05
5.87
5.07
1.55
1958
1.11
5.20
4.51
8.29
8.31
4.80
2.54
1959
2.80
3.27
5.00
9.13
8.11
3.57
1.84
1960
2.37
2.90
7.27
9.89
6.87
4.72
2.30
1961
2.01
2.33
6.97
8.53
7.06
4.55
1.97
1962
3.24
3.26
6.87
8.13
6.74
5.01
1.05
1963
2.61
4.31
5.20
6.52
8.16
4.68
1.63
1964
2.75
4.25
4.75
6.77
6.20
4.56
2.26
1965
2.86
4.96
6.31
8.96
6.35
6.57
2.04
1966
3.99
6.16
7.49
8.31
8.77
4.69
2.62
1967
2.61
5.61
6.69
9.08
8.69
6.49
2.18
1968
*
3.83
6.17
8.35
5.39
3.96
1.61
1969
2.73
5.83
5.36
7.61
8.31
4.34
1.25
1970
3.21
4.87
7.08
9.36
8.19
4.86
2.81
1971
3.33
5.48
4.91
7.82
6.99
5.22
2.28
1972
2.23
5.58
6.00
10.27
8.42
5.40
3.15
MEAN
2.55
4.35
5.58
7.95
7.01
4.69
1.95
* Missing Data
4
CIC
:7.
C)
C:)
ta a
Cr)
O
CV
1-1
01
CV 0
CO
t--I
1-1
CD
Li, 0
N C)
0 0
0 0
0 0
O
0 0
(:) C:)
(:) C)
CO C)
O
0 0
CV C)
CD (:)
1r-4 CD
r.4 CD
CV (:)
rI CD
CD C:)
r-4
CV CD
C:) C)
C\J C)
0
CDC)
Cr) CD
0 0 0 0
r-4
CC)
'-I
d-
MO
CV a
MO
MO
NO
0 0
CY) 0
CY)
MO
NO
MO
NO
,--1
cc) CD
NO
MO
ce CV
= e-i
0
=
4:t CD
m o
LOO
00
v--1
CV CD
CV CD
CY) 0
CC) CD
01 C:)
CT CD
my- c)
1.--. cp
Lr) al
LO e-1
r-,. (:)
COO
r-4
r-4
0
NO
r-I
CC) CD
01 cp
dir•-I
r-4 Cr)
(NJ
o
00
,-.1
CO 0
CV r-4
o CD
03 a
r-I CD
r-4
CO
CON
1-4
NO
CV
010
CO CD
1-4
1--1
NO
CV
LC) CD
r-I
N.
N. r-i
1--1
MO
CV
CO'--I
CV
01 0
CV
r-i 0
CV
c:) st
CV
MN
CV
C.C)
r.-1 r-4
CY)
CO r-4
CY)
CO cp
CY)
Lc) ,-4
csJ c:-.)
CY)
CO)
cs.
I-1
CY) re)
M
LC)
CD cl'
MN
M
s-4 1-4
MN
cd-
Lf1 0
ed-
CO CO
cd-
LC) d'
d-
d
03 LC)
LC)
CC) M
LO
r... cp
LC)
r-4
CY)
CY) r-4
LC)
LC) a
U)
CO CO
c•
CY)
01 01
03
r.... 01
CC)
r-I T-4
r,. CV
CD LC)
01
CNJ CO
CO
r..
a 00
CV CsJ
r-4 a
LC) r-4
r-4
r-4 LC)
r-4
f-.4
r-I
01
CV Co)
m:r 00
CO LC)
r-I
di" M
CO CC)
LO LC)
Cr) (C)
C‘i r •I
‘dCY)
LC)
'-4
I-f
LA. LU
CC cr
=
C:) Ce
2 C)
LU 2
IZ. a.
I-1 M
F= N.
C.r
-) -4
L
(/) CD
M
U-1
J
Cr
C/1
:2:
:2:
C) CC
2
r-4
(,)
r-4
Z t-i
i--1
cp
0z5-4I-I
gi al
::)
Cli
LJ- CL
0M
Z LC)
0 1-1
I-1
F- a
g= COI—
a
V1
LI. LU
CD CD
2:
:s- c1C
(-) I=
LLI :2:
::, I-4
LU
Cd
Cr
LA-
0
ro)
C3
=
O
c:,
ce, m
O
LC)
r--1
CV
r-4
LLJ
:›.
0
03
2 c:t
C
L
M ce
0
CC)
Co)
1,..
r-4
CY)
1--.
01
Rd-
r.4
LC)
r-4
r-4
CNJ r-4
r-4
LC1 CV
s--I
Cr)
CY) CC)
r-4 (NJ
r-I
cp LC)
01
00 r-I
Cr) l0
Cr)
CC) CNA
LC) q:Ir
ed- CO
CV
LU
LL1
LU
LU
0
03
2 CC
0-
0
CO
= c:C
0-
0
03
2 Ct
0
CO
2 ct
0
03
2 c:C
LU
>•
0
03
2 c:C
CO
CC)
U.J
>.
M ce
0
r-4 :I:
r-I :I:
C].0-
--J
1-0
OX
Cr
1--.
r-4
cn
:-
E 0
=
r-I :I:
0
Ox L. u co
Cr)
›.
ct.
M ce
0
P,. CC)
CV
cl_
a..
mOce ce
w ce
0
a.
M ce
CD
Ce CO
CO CO
CO
W r-4 :/:
x r-I :I:
Ca
CI_
CI_
LIJ
Cl-
(/)
x SOX
X 0 0Z
Z I- OM P P
—
c..1 F-
'7 CO r-4
c1C CC) e-4
C/) CO .-4
CD CO r ♦
(1)
r-i :I:
0
I— rl :I:
I I—
z=F-N.
ci- N. :E:
‹C
N. r-)
=J I--
N. = N. Lua.N.
c..)IN.
CO –
CO r ♦
>- F-
etIC CX) 1-4
5
W C)
C:)
N O
r-4
(:)
NO
O
O
C\J
6-4 0
CD CD
(:) CD
CV (:)
(:) 0
(:) (:)
1•4 CD
01
r-4
r-4 0
6-1 (:)
CD C:)
6-4 (:)
r-I C:)
(:) (:)
CD c)
00
CO CD
CD CD
CD CD
rs.
0 0
M CD
CD
CV CD
1-4 CD
CO
r-4 CD
r-1(:)
NO
N O
MO
L)
MO
C\I
NO
MO
NO
1)
NO
NO
to
c:)
MO
00
Lr) c)
co
CO.--I
CD
1-1
r-I
NO
,-.1 CD
.4- CD
MO
MO
ON
CO CD
MO
1-1
.4- CD
.--i CD
010
NO
MO
LO 0
U1 f•-n
CO 0
r-4
11-1
2:
1-1
Lu
LLB
CD (:)
CO
Cil cC
CL
= ae
0 0
:I:
=
4J 0_
C/1 I-I
cc
=
= ••••4
Z
1--4 r-I
t-i
I-1 E z
cp
I—, a.
1-- 1-.
F- ,--f
= 1-1
C..)
W CI
(1) Z
LJJ Z c2
Z CD
LU () 2
Cl.
CD
=
I.J- =
W a
CD
Z r..1
n
I- F-
CD
0 Z
Q
:0.- IX
C..)Z
Z
LU In1
=
cr
LU
1-1
v-I
MO
cp
c)
1-4
C...1
r-4 CD
CO CV
,-i
N. CD
r-4
CO
v-I
r-I 6-4
r-I CD
r-I
v-I
N. c)
cc)
cp
r--I
Or-1
CV
COO
Mr--I
.--If--I
COO
r-i
c) c)
.—I
.4- 0
r-4
r-4
r-10
M N
r-4
CO
CV CD
CV
CV CD
CV
01 .-4
r-I
4- CV
CV
Cr) r-I
C\I
h.
01M
v-I
CO CO
CV
CV CV
CO
C° P
CV
v-I LO
.4- CY)
Mco
CO r-I
1-1
CO
CO VI
co
co
CV co
C\I 1-4
cl-
el-
.4-
VI .4-
cp
-4M
u1
CV .4-
LO
0)
CI"
1.0
01 co
r-...
co
Ill
nt
cf..
CV CD
CO .--1
.--i tcp1
-101
.4- h.
CD r-4
4-
CD N.
CID
CO
1.-.
N.
N.
01 CO
CO
CV CO
01 .-.1
d-01
o)
U1 01
CO 1-1
r-. qzt
CV 0
CO 0
CO .--I
N0)
CO
CV
,--I
P
"-I
Fri)
CV
CO
r.4
01 I-.
01 01
Cv f--1
....i
CTI
C71 CI-10
CY) CV
6-1
rC \ II ‘-i
CN
N.
Ol
t°
.-I
0 CV
.4CV
v-I
N\ h.
CO 4-
t.0
LO M
f•-.
CC
LL.
r-I
.2
CC
= Crs
CI
F 4 CD
CO
=
Q(1)
Lu
LL- GO
r-4
0
r-4
co 01
LU
0 01
LU
CO
CV 4-
CV r-t
W
W
I-1
CD
c.... .4-
O
COI
O Ln
N
4J
r-... c0..)
1.-1
.-4
CY") 4-
LO
CC
(Y)
r)
CY)
.4- CO
N
O 1.0
1-4 CO
.4CV CO
W
W
0
CD
CD
CD
0
CD
CD
CO
co
co
co
03
CO
CO
= < S et = et = et
< = < = <
X CC
X tY
= cc
X ct
ce CL M CC
▪ CC
Z
0
0
*0
CD W CD
VD 0
ID
40
tID
til
pp
tO
CO CD
CC
r♦- 2
1.4 2
r-I =
e-I = 1- r-s = E .-1 = W. r-1 2
-I 0-
0-
0-
0. V) O. W 0. Ct3 0.
1nI 0 =
am wax ›-am =•am F-0 CoCDZ
CC F-
>- f-
Z I-
...t I--
0. I-
CD F-
F- EO.
N.
cC I., =
1,..
=
1,-.
= P.
W
r...
l'... E.)
cr CO r-I Z CO r'4
CO r-I r's CO I-1 cC CO 1-1 Cr) CO r-4 . 0 CO v-1
ESSA-WEATHER BUREAU
AGRICULTURAL SERVICE OFFICE
OREGON STATE UNIVERSITY
Daily normal temperatures for Corvallis, Oregon, Hyslop Farm,
extrapolated from normals at Eugene and Salem, Oregon.
January
Temperature
Max Min Avg
1
45 33 39
2
45 33 39
3
45 33 39
4
44 32 38
5
44 32 38
6
44 32 38
7
44 32 38
8
44 32 38
9
44 32 38
10
44 32 38
11
44 32 38
12
44 31 38
13
44 31 38
14
44 31 38
15
44 31 38
16
44 31 38
17
44 31 38
18
44 31 38
19
44 31 38
20
44 31 38
21
44 31 38
22
44 31 38
23
44 31 38
24
45 31 38
25
45 31 38
26
45 31 38
27
45 31 38
28
45 32 39
29
46 32 39
30
46 32 39
31
46 32 39
Day
Day
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
February
Temperature
Max Min Avg
46 32 39
46 32 39
46 32 , 39
46 3? 39
46 33 40
47 33 40
47 33 40
47 33, 40
47 33 40
47 33 40
48 33 41
48 3 41
49 34 42
49 34 42
49 34 42
49 34 42
50 34,,42
50 34' - 42
50 34 42
50 35 43
51 35 43
51 35 43
51 35 43
51 35,„43
51 35 43
52 35 44
52 35 44
52 36,,, 44
52 36 44
March
Temperature
Max Min Avg
52 36 44
1
2, , 52 36 44
3 "52 36 44
4
53 36 45
53 36 45
5
6
53 36 45
7
53 37 45
8
53 37 45
9LI 53 37 45
10
53 37 45
53 37 45
11
54 37 46
12
54 37 46
13
14
54 37 46
54 37 46
15
54 37 46
16
17
54 37 46
18
55 37 46
55 37 46
19
20
55 37 46
21
55 37 46
22'' 55 37 46
23
55 37 46
24
55 37 46
25
55 37 46
26
56 37 47
56 37 47
27
56 37 47
28
29
56 37 47
30
56- 37 47
31
56 37 47
Day
NATIONAL WEATHER SERVICE
AGRICULTURAL SERVICE OFFICE
OREGON STATE UNIVERSITY
Daily normal temperatures for Corvallis, Oregon, Hyslop Farm,
extrapolated from normals at Eugene and Salem, Oregon.
Day
April
Temperature
Max Min Avg
1 , 57 38 48
2;"`
38 48
3 57 38 . 48
4 58 3848
"-'
5
58
658
7 -4, 58
8
58
9 38
10 vq39
38 48
39 49
39 49
39 49
39V-45 49
39_ 49
11 59
_ 40 50
12_ 0 60 40 50
13 ' 60 40 50
14, :;61
15
61
16 ,,,, 62
17e 62
18 62
19 62
20 63
21 63
22 63
23 63
24 63
25 63
26 64
27\0. 64
28 64
29 ,,.\,t
_- 65
30 65
40 51
40' 51
40 51
4f 52
41 52
41,sr 52
41 ' 52
41 52
41_ 52
42 53
42 53
4r). 53
42 53
42 53
43 54
43 :-'‘5
43 54
Day
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
May
Temperature
Max Min Avg
Day
June
Temperature
Max Min Avg
1 69 47 58
2 01'69 o.47 58
3')- 69 47 58
4 '70 47 59
65 43
65 43
65 43
65 , 43
54
54
54
54
65
66
66
66
66
66
41
44
44
44
44
44
54
55
55
55
55
55
5
70
6 ,70
7 ,70
8
70
9
70
10 -71
1-)
48
48
48
48
48
59
59
59
59
59
17
67
67
45
45
45
56
56
56
13 12
14 q 72
15-'72
49
49
49
61
61
61
66,,,\' 44 5
66 44_ 55
16 67 45 56
17 67 ,,45 56
18 67, 45 56
19 67 45 56
20 -68 46 57
21 68 46 57
22 68 46 57
23 68 7\0 46 57
24 68')' 46 57
25 68 46 57
26 68 46 57
27 -39 4T 58
28 69 47 58
29
69P47 58
30 65'7 47 58
31 69 47 58
48 60
0,
.
71-re
48 60
11 ,-.12 71 48 60
16 72 49
17 73 49
18 c?-73 49
19° 73 G 49
20 3349
21 74 49
22 1-:1714 49
23 34 49
24 ,75 50
25 22 75e50
26 75 50
27 AL76 50
28,1176 50
29 76 50
30 77 50
61
61
61
61
61
62
62
62
63
63
63
63
63
63
64
NATIONAL WEATHER SERVICE
AGRICULTURAL SERVICE OFFICE
OREGON STATE UNIVERSITY
Daily normal temperatures for Corvallis, Oregon, Hyslop Farm,
extrapolated from normals at Eugene and Salem, Oregon.
Day
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
July
Temperature
Max Min Avg
78 51 65
79 51 65
79 51 65
79 51 65
8O 51 66
80 51 66
80 51 66
80 51 66
80 51 66
-81 51 66
81 51 66
81 51 66
81 51 66
81 51 66
81 51 66
81 51 66
81 51 66
81 -52 67
81 52 67
81 52 67
-82 52 67
82 52 67
82 52 67
82 52 67
-83 52 68
83 52 68
83 52 68
83 52 68
83 52 68
83 52 68
83 52 68
August
Temperature
Max Min Avg
82 52 67
1
2
82 52 67
3
82 52 67
4
82 52 67
5 082 52 67
61-C, 82 52 67
7 ' 82 52 67
8
82 52 67
9
82 52 67
10
82 52 67
11
T1 51-66
12 kl.81 51 66
13,t'. 81 51 66
14
81 51 66
81 51 66
15
16
81 51 66
17 780 51 66
80 51 66
18
19 ,, 80 51 66
20:2r. 80 51 66
21
80 51 66
22
80 51 66
23
80 51 66
24 -79 51 65
25
79 50 65
26
79 50 65
27 ,79 50 65
28=`'79 50 65
29
79 50 65
30
79 50 65
31
79 50 65
Day
September
Day Temperature
Max Min Avg
1 79 50 65
2 79 50 65
3.1c79 50 65
4-'7a... 50 65
5 78 49 64
6w78 49 64
7 78 49 64
8 78 49 64
9 77- 49 63
10 77 49 63
11z77 49 63
1
77 44 - 63
13 72. 49 63
14 76 48 62
15Y76 48 62
16 76 48 62
17 76 48 62
18 75 48 62
19 75 48 62
20 75 47- 61
214-'5)75 47 61
22 75 47 61
23 74 47 61
24 74 47 61
25 73 47 60
2673 47_ 60
27 72 46 59
28,72 46 59
29 72 46 59
30 71 46 59
NATIONAL WEATHER SERVICE
AGRICULTURAL SERVICE OFFICE
OREGON STATE UNIVERSITY
Daily normal temperatures for Corvallis, Oregon, Hyslop Farm,
extrapolated from normals at Eugene and Salem, Oregon.
October
Temperature
Max Min Avg
1
31 45 58
71 45 58
3 ,c--.-70 45 58
4‘' 'JO 45 58
5 - 69 45( 57
6
68 45,-̀- 57
7
68 45 57
8 _68 45 57
9 0 67 44 56
10\z' 67 44 56
11 77:66 44, -/55
12'' 66 44 J 55
13 , 65 44 55
14,9',7'65 43 54
15
65 43 54
16 ,,,64 43 54
17 ''' 64 43 54
18 763 43,1/ 53
19' _
63 43 53
20 ,„ 62 4'L' 52
21,T) 62 42 , 52
22 62 421;'52
23
60 42 51
24 ;`'. 60 42 51
25 60 ifr 51
26
60 41 ,) 51
27 ,7 59 41''' 50
28' 59 41_ 50
29 -'68 40 ,49
30 0, -57 407,49
31
57 40 49
Day
Day
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
10
November
Temperature
Max Min Avg
57 39 48
56 39 48
56 39 48
56 38 47
38 47
5c 38 47
55 38 47
54 38 46
54 38 46
54 "38 46
54' 38 46
53- 38 46
53 37 45
53,'. 37 45
53 37 45
52 37 45
52,,‘°37 45
52' 37 45
51 37 44
51 ,e 37 44
51137 44
51 37 44
5-6 36 43
50 36 43
50 r36 43
50-,A 36 43
50 36 43
50 36 43
41-, 36 43
401'36 43
Day
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
December
Temperature
Max Min Avg
49 36 43
49 36 43
49 36 43
49 36 43
49_ 36 43
48 36 42
48 36 42
48 36 42
48 36 42
48- 36 42
47 3C 41
47 35 41
47 35 41
47 35 41
47 35 41
47 35 41
47 35 41
47 35 41
46 35 41
46 35 41
46 35 41
46 35 41
46 35... 41
46 34 40
46 34 40
4s- 34 40
45 34 40
45 34 40
45 34 40
45 33 39
45 33 39
EXTREME VALUES SINCE 1889
Extreme Data For
Corvallis, Oregon
January
Date
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Max.
59
57
58
60
64
60
60
60
56
57
59
57
56
58
57
60
61
60
60
61
61
62
59
61
61
61
64
64
59
6460
Mina
Year
1940
1953
1902
1914
1914
1914
45, 14, 62
1962
33, 45, 53
1953
1928
1945
1970
1974
61, 74
1958
1975
19, 75
75, 76
1968
1968
1931
05, 19, 31, 70
31, 35
1935
1924
1931
1931
20, 40
40, 71
40, 60
11
3
8
18
16
10
13
11
9
6
9
0
1
12
13
7
17
15
11
8
12
4
11
11
11
12
15
7
11
12
12
-1
Year
1924
1924
1974
1924
1924
1924
1937
1974
1909
1974
1909
1909
09, 30
1930
1907
1907
1916
1950
1916
1949
1930
1927
1962
02, 43
02, 30, 49
1957
1957
1957
1957
1957
1950
1-ec-122
Year
1.15
1.58
3.43
2.38
1.65
2.55
2.00
1.36
1.38
1.53
2.03
2.55
2.60
1.13
2.74
1.95
3.40
2.25
1.38
2.00
2.71
1.95
1.51
1.14
1.73
1.30
1.69
4.28
1.28
.75
1.29
1933
1933
1907
1966
1914
1923
1942
1953
1959
1950
1972
1936
1974
1915
1974
1974
1911
1911
1953
1964
1972
1974
1970
1941
1970
1975
1959
1965
1958
1958
1958
EXTREME VALUES SINCE 1889
Extreme Data For
Corvallis, Oregon
February
Date
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
Max.
66.
59
62
61
61
61
63
62
63
64
64
62
61
62
66
6867
64
65
62
63
63
63
69
67
68
68
68
68
Min.
Year
1940
60, 62, 63
1917
1928
52, 30
1963
1947
1952
51, 63
1963
1963
31, 71
31, 47, 71
1951
1902
1902
1916
16, 43
1916
1916
1973
02, 32, 50
16, 47
1905
1968
1932
32, 68
01, 68
1968
11
3
-2
-5
-2
-2
21
17
11
17
18
15
18
21
21
17
20
23
21
24
23
25
24
22
21
17
18
25
26
12
Year
1899
1950
1899
1899
1899
1899
1929
1929
1933
29, 33
05, 29
1954
1905
1905
1936
1956
1956
1936
1955
1955
1955
20, 42
20, 47
1920
1962
1962
1962
71
1960
Precip.
1.23
1.25
1.78
1.96
1.00
1.98
1.27
1.34
2.56
2.76
1.11
1.38
1.23
2.00
1.68
1.93
2.13
1.26
1.57
1.41
2.17
1.17
.78
1.29
1.47
1.17
1.28
1.00
.77
Year
1947
1925
1942
1926
1908
1943
1945
1922
1919
1961
1961
1954
1954
1904
1904
1970
1949
1949
1968
1921
1956
1949
1909
14, 26
1902
1919
1971
1940
1904
EXTREME VALUES SINCE 1889
Extreme Data For
Corvallis, Oregon
March
Date
Max.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
72
73
68
65
65
66
73
76
77
72
72
72
71
78
78
77
78
77
73
76
75
75
73
69
71
73
77
74
77
78
77
Min.
Year
12
18
20
21
23
14
23
26
27
27
24
24
22
25
22
25
22
26
28
28
29
29
28
29
24
28
27
30
28
25
28
1905
1905
26, 28
28, 43
1965
1965
1905
1905
1905
1941
1934
1934
1934
1926
1947
1947
1947
1947
1914
1915
1915
15, 39
1915
1953
1930
41, 69
1941
1969
1923
1923
1911
13
Year
Year
1971
1971
1923
1923
1955
1956
1956
1974
1974
1956
1903
1906
1906
17, 23
1926
06, 17
1906
1917
1965
1954
12, 44
1952
1924
16, 42
1913
1919
1922
44,49,61
25, 72
1936
20, 70
1.00
1.46
1.62
1.52
.70
1.32
.76
1.10
1.67
1.26
.97
1.38
.82
.90
1.74
1.38
1.00
1.67
.80
.95
.96
1.10
1.05
.77
1.28
1.89
1.35
1.61
1.86
1.90
1.76
1977
1972
1916
1902
1960
1916
1957
1951
1966
1907
1961
1946
1961
1912
1908
1921
1945
1938
1973
1904
1905
1938
1907
1932
16, 62
1916
1940
1974
1963
1963
1943
EXTREME VALUES SINCE 1889
Extreme Data For
Corvallis, Oregon
April
Date
Max.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
77
78
76
80
82
80
78
75
79
80
86
85
84
84
85
80
83
83
82
88
82
80
87
86
83
88
88
91
88
85
Year
Min.
1911
1944
1951
1949
1930
1906
1939
28, 38
1904
1904
1904
1904
43, 47
43, 47
1926
1947
1939
1939
1965
1906
1934
1905
1910
1910
1926
1947
1926
1926
1926
1957
30
28
24
26
28
27
28
28
30
29
29
28
24
27
29
29
28
29
28
29
29
30
30
29
30
31
30
28
27
29
14
Year
1936
06, 70
1918
1918
1956
1975
1921
1919
22,27,29
1927
1927
1903
1968
11, 19
55, 67
1960
1964
1902
27, 68
1927
1968
22, 72
04, 22
1942
1908
05, 43
1955
1913
1954
1912
Precip.
1.13
.46
.66
.85
.92
.88
.77
.92
1.83
1.10
.72
.68
2.06
1.14
.69
.59
1.06
.65
.82
.50
.53
.52
.47
.43
.47
.47
1.37
.48
.42
.60
Year
1934
1974
1954
1901
1941
1902
1907
1972
1971
1914
1971
1972
1937
1929
1937
38, 63
1908
1925
1965
1960
1923
1915
1975
1936
1906
1937
1962
1951
10, 55
1940
EXTREME VALUES SINCE 1889
Extreme Data For
Corvallis, Oregon
May
Date
Max.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
85
86
84
82
85
84
90
88
84
89
88
91
95
91
82
86
88
92
88
92
92
90
92
91
91
88
85
88
90
93
99
Year
1947
1946
1944
1944
1931
1953
1905
1906
1940
1
31, 71
1949
1939
1939
25, 70, 73
1922
1956
1956
1963
1963
1963
1938
1947
1938
1928
02, 36, 38
1972
1972
1931
1931
1922
Min.
28
29
31
32
28
30
31
30
32
31
31
33
33
33
35
34
34
33
32
31
33
31
36
33
31
31
33
35
34
30
30
15
Year
1915
1964
1964
1952
1909
1909
1970
1922
08, 26
1920
1916
1977
58, 64
1920
1974
1917
1976 09, 76
1927
1975
09, 55
1920
09, 35
11, 26
1920
1922
21, 54, 66
14, 76
11, 76
1920
1919
Precip.
1.03
.51
1.10
2.23
1.15
1.58
1.12
.68
.59
.90
.43
.53
.90
.69
.69
.70
.98
.94
.70
.46
.77
.64
.66
.33
.67
1.64
.26
.22
.68
.53
.93
Year
1949
1941
1975
1941
1941
1963
1963
1916
1957
1937
1905
1945
1902
06, 36
1901
1972
1972
1957
1969
1968
1939
1939
1968
1953
1968
1971
1953
1958
1932
1943
1956
EXTREME VALUES SINCE 1889
Extreme Data for
Corvallis, Oregon
June
Date
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22 ,
23
24
25
26
27
28
29
30
Max.
Year
95
93
94
90
96
96
98
91
95
94
96
94
91
90
98
98
97
97
91
98
92
92
96
102
101
95
91
95
100
100
1970
1970
1950
35, 69
1935
1935
1903
1948
1955
1955
1940
1940
1916
1961
1966
1966
61, 69
61, 69
45, 46, 67
1902
1973
26, 58
1926
1925
1925
1907
18, 37
1957
1924
1942
Min.
Year
32
39
35
33
38
34
37
37
39
38
38
35
33
39
37
35
35
36
38
35
38
39
37
32
38
40
37
38
38
40
1929
1976
1976
1950
09, 53
1918
1961
1919
1938
1946
1956
1917
1976
71, 73
1952
1955
1911
1911
1914
1911
1914
08, 19
1920
1911
1901
1974
1965
19, 71
1919
19, 27, 56, 61
16
Precip.
Year
.44
.38
.51
.58
.60
.54
.65
1.68
.63
.34
.94
.70
.43
.55
1.03
.44
1.32
.45
1.06
.69
.68
.80
.76
.31
1.02
.48
.52
.52
2.14
.50
1947
1947
1930
1977
1959
1953
1914
1927
1954
1915
1910
1912
1931
1936
1906
1903
1931
1937
1937
1910
1943
1913
1969
1941
1971
1911
1969
1955
1952
1916
EXTREME VALUES SINCE 1889
Extreme Data for
Corvallis, Oregon
July
Date
Max.
Year
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
101
104
99
95
94
97
100
102
100
100
102
103
106
103
102
104
99
98
104
107
104
101
102
102
101
104
97
103
98
102
101
1942
1942
1922
1967
26, 72
1960
1960
1905
1926
1926
1961
1961
1935
17, 41
1941
1941
1914
08, 59, 72
1931
1946
1938
1939
1928
1928
1928
1939
1939
1958
1960
1907
59, 65
Min.
40
38
36
39
40
40
40
39
39
41
43
42
38
40
41
43
41
40
42
42
41
41
42
43
42
42
42
42
41
44
41
17
Year
1919
1910
18, 21
1926
1919
1902
1955
11, 26
60, 64
1924
21, 43
19, 21
1904
1968
1968
1952
1955
09, 10
1926
22, 24, 26
1922
1922
1910
01, 12, 53, 73
01, 66
1922
26, 57
1970
1956
45, 69
1956
Leg:2z
.69
.47
.50
.23
.34
.81
.41
.57
.87
.19
.12
.06
.41
.29
.49
1.08
.43
.17
.16
.20
.26
.02
.08
.15
.02
.42
.47
1.75
.32
.07
.08
Year
1902
1902
1913
1976
1961
1909
1923
1946
1974
1954
1936
1925
1920
1904
04, 26
1916
1974
1974
1950
1968
1934
1965
1919
1912
1909
1947
1947
1947
1975
1947
1937
EXTREME VALUES SINCE 1889
Extreme Data for
Corvallis, Oregon
August
Date
Max.
Year
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
101
101
98
100
99
103
105
100
102
99
101
103
104
102
99
100
100
98
99
98
99
99
97
96
99
99
99
100
98
99
96
1965
1939
1939
01, 52
1932
1972
1972
25, 39
1960
1967
1971
1977
1977
1942
1942
19, 27
40, 77
1940
1951
1951
1950
1942
1917
1918
1918
1935
1935
1931
44, 67
1918
1918
Min.
Year
10, 26, 37, 69
26, 55
1950
1903
1909
1909
1926
1909
1912
1903
08, 59
10, 18
27, 55
1955
1955
1909
1914
1913
1973
22, 52
1973
1973
1973
1910
21, 25
1957
1925
1957
1924
1907
1914
43
43
43
42
41
41
41
41
41
42
41
43
42
40
42
41
42
40
39
41
41
37
41
35
41
39
40
39
39
39
37
18
Pre
.07
.28
.46
.42
.35
.23
.28
.21
.33
.09
.55
.43
.06
.25
.45
.67
.57
.70
.47
.28
.32
.55
.41
1.35
1.29
.83
.62
.54
.95
.25
.69
Year
1964
1956
1947
1933
1943
1976
1907
1907
1932
1932
1922
1965
1913
1976
1912
1912
1976
1926
1968
1968
1943
1925
1968
1968
1968
1953
1941
1975
1943
1912
1939
EXTREME VALUES SINCE 1889
Extreme Data for
Corvallis, Oregon
September
Date
Max.
Year
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
95
99
97
93
103
98
97
98
97
101
96
94
95
98
98
98
92
92
94
95
95
95
95
97
97
92
94
92
87
89
1905
1934
1935
18, 35
1944
1955
1958
44, 58
44, 48
1944
1922
1922
1951
1937
1967
1967
18, 51, 62
18, 62
1974
1974
47, 52, 74
47, 52
43, 52
1974
1974
1949
1967
1967
1932
1975
Year
Min.
01, 14, 21, 73
1936
13, 69
1954
1954
14, 20
1910
1927
13, 64
1952
1952
1921
1921
1921
1970
1921
1911
1911
06, 11
24, 58, 60
55, 64
1904
58, 61
1909
1909
1909
1972
1902
1961
1903
41
37
38
41
40
40
37
39
38
36
36
34
33
38
34
35
33
35
34
37
37
31
35
35
27
30
32
32
34
32
19
Precip.
1.89
.59
.32
1.22
.54
.46
.59
.71
.65
.62
1.15
1.57
.95
1.28
1.38
.72
.60
2.18
1.00
.54
1.52
.54
.76
1.25
.34
.86
1.29
.77
.62
.60
Year
1941
1971
1913
1911
1938
27, 76
1912
1917
1949
1930
1941
1906
1920
1935
1946
1955
1914
1969
1941
1970
1944
1972
1920
1924
01, 05
1911
1957
1955
1925
1909
EXTREME VALUES SINCE 1889
Extreme Data for
Corvallis, Oregon
October
Date
Max.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
-19
20
21
22 .
23
24
25
26
27
28
29
30
31
89
86
90
87
85
86
87
87
90
89
90
82
79
80
80
82
83
80
83
76
79
79
83
77
74
75
70
72
70
70
73
Year
1970
1952
1932
1932
1952
1952
1952
1976
1936
34, 36
1936
1901
1937
1961
29, 52, 61
1936
1936
36, 40
1940
1938
1937
29, 37
1929
1929
1904
1944
1944
31, 37, 44
1931
1917
1949
Year
Min.
03, 21, 50
1954
1916
1916
1974
13, 37
1970
16, 61
1912
1924
1915
1912
1966
25, 66
1933
25, 46
49, 64
1949
1905
1949
1933
1928
1916
1945
16, 54, 71
1954
1954
1971
1971
1971
26, 27
33
30
31
26
33
30
29
31
31
31
31
34
30
30
29
31
31
27
29
27
24
29
29
28
31
27
27
25
25
26
29
20
Preci
1.14
.78
1.81
.92
.97
.81
1.20
.99
1.77
1.56
.85
1.28
.96
1.08
1.56
1.24
.80
1.09
1.55
1.76
1.39
1.24
1.84
1.71
.67
1.11
1.20
1.32
2.26
1.20
.75
Year
1951
1914
1967
1939
1950
1905
1913
62, 69
1955
1953
1948
1968
1908
1908
1947
1918
1947
1947
1909
1946
1934
1931
1951
1940
1931
1921
1950
1950
1924
1924
1901
EXTREME VALUES SINCE 1889
Extreme Data For
Corvallis, Oregon
November*
Date
Max.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
72
70
72
69
66
67
70
66
68
67
70
68
66
64
66
67
68
64
68
68
68
64
65
67
67
63
60
60
63
68
Min.
Year
1954
1970
27, 75
01, 08, 75
08, 49
1939
1958
1941
1907
1930
1907
06, 74
49, 54
06, 49
1919
1919
1976
19, 32
1966
1966
1917
1933
1909
1936
1947
1947
1949
40, 47
1928
1907
21
22
15
19
22
23
26
26
26
25
24
23
21
16
14
16
19
24
25
22
25
23
20
20
21
18
15
20
20
23
Year
Year
1935
1936
1935
1935
1957
1957
1957
36, 77
1959
1920
16, 20
36, 55
1916
1955
1955
1955
1955
1955
29, 77
61, 77
1922
1938
1952
1952
1952
1952
1952
1936
1952
56, 69, 76
1.50
1.88
1.48
1.47
2.00
1.98
2.36
1.88
2.37
1.48
1.21
1.70
2.76
1.55
1.86
2.22
1.91
1.70
1.78
3.16
1.18
2.37
1.80
2.38
2.00
2.56
1.72
1.21
2.21
1.36
1924
1909
1944
1906
1910
1903
1906
1964
1912
1928
1960
1965
1941
1942
1941
1973
1954
1946
55, 58
1921
1973
1961
1923
1907
1977
1962
1945
1914
1926
1902
* November 1973 was the wettest November on record with 18.28 inches. Thus
November 1973 is the absolute wettest month.
21
EXTREMEVALUES SINCE 1889
Extreme Data For
Corvallis, Oregon
December*
Date
Max.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
65
62
63
63
59
58
63
62
59
60
65
62
61
60
58
59
58
58
61
59
61
66
61
58
60
60
63
66
63
61
Year
Min.
Year
1939
1958
1958
1939
1954
06, 44
1938
1915
1915
1942
1974
1921
1960
1969
1974
1974
06, 17
11, 31, 41
1915
1972
1964
55, 64
1950
1950
1967
1917
1917
1917
1917
1917
1958
20
22
25
24
22
20
12
-7
-6
1
-4
-14
-14.5
-10
-5
10
10
5
6
13
13
5
-3
-2
-8
-5
8
24
24
11
10
1956
1956
1906
06, 72
1972
1972
1972
1972
1972
1972
1972
1919
1919
1919
1919
1919
1964
1924
1924
1924
1914
1924
1924
1924
1924
1924
1924
1930
16, 25, 30
1968
1968
Year
1.65
3.58
1.24
2.00
2.05
2.78
1.47
1.43
1.68
2.16
1.44
2.37
1.77
2.09
1.02
1.98
1.82
2.42
1.42
1.84
2.18
1.96
1.69
1.16
1.90
1.63
2.16
2.02
2.52
1.20
1.89
* December 1976 was driest December of record with a total of 1.47.
22
1975
1941
1915
1975
1968
1933
1973
1901
1922
1968
1929
1969
1917
1929
1939
1941
1941
1929
1941
1957
1964
1964
1932
1965
1907
1917
1937
1965
1937
1917
1970
Weekly Mean Soil Temperatures
15 Year Average (1961 to 1968 and 1970 to 1978)
For Woodburn Silty Clay Loam Soil
2 inch
Min.
Month, Week Max.
4 inch
Min.
Max.
8 inch
Min.
Max.
20 inch
Min.
Max.
40 inch
Min.
Max.
41.0
40.9
44.5
42.0
44.2
36.6
36.6
40.3
37.3
37.2
39.7
40.4
42.9
41.0
41.3
37.2
38.0
40.1
35.7
38.0
38.9
39.5
41.5
39.9
39.8
37.4
37.9
39.6
38.6
37.6
41.7
41.6
41.5
41.5
42.7
40.7
40.7
40.5
40.9
39.4
48.6
48.3
47.5
47.0
46.7
48.3
48.0
47.3
46.9
46.4
1
2
3
4
44.3
47.0
48.5
48.1
38.3
39.2
40.2
39.4
42.3
44.5
44.8
45.8
38.9
40.4
41.3
40.8
41.0
42.5
43.9
43.4
39.3
40.4
41.9
40.7
41.7
42.0
42.9
43.1
40.9
40.9
42.1
42.4
47.0
47.1
47.4
47.5
46.8
46.9
47.1
47.4
Mar.
1
2
3
4
5*
48.1
50.6
53.8
54.4
56.4
39.4
40.2
41.6
39.8
45.2
45.9
47.2
49.4
50.1
50.9
40.4
41.3
42.3
43.6
44.2
43.4
44.7
46.7
47.2
48.2
40.8
41.8
43.7
44.2
44.9
43.9
44.7
45.0
46.1
47.0
42.6
42.8
43.8
44.8
46.0
47.5
47.5
47.9
48.4
48.9
47.4
47.5
47.7
48.2
48.6
Apr.
1
2
3
4
5*
58.3
59.3
59.9
63.5
61.2
43.4
44.7
45.1
46.7
45.8
54.7
55.0
56.1
57.7
58.0
45.3
46.0
46.2
48.4
47.3
51.2
50.8
51.1
54.1
52.5
46.2
46.6
47.8
49.5
48.7
46.7
48.1
48.9
49.3
48.5
46.3
47.4
48.2
48.9
47.9
49.7
50.4
51.4
51.6
51.7
49.2
50.2
50.7
51.3
51.5
May
1
2
3
4
5*
65.5
69.5
71.6
74.3
78.5
48.5
51.2
52.4
53.8
50.8
60.6
63.8
66.2
68.7
72.8
50.6
53.0
54.8
55.9
59.3
56.9
59.4
61.4
63.3
65.5
51.8
54.5
55.8
58.0
60.7
51.6
54.2
55.5
57.4
58.2
50.8
52.9
55.0
56.6
57.6
52.5
53.6
54.9
56.0
56.9
52.2
53.3
54.5
55.8
56.8
Jun.
1
2
3
4
5*
75.6
79.9
80.8
82.0
83.2
55.9
59.1
60.4
60.4
62.1
70.0
73.9
75.4
76.1
77.9
58.9
60.8
62.6
63.3
63.4
65.6
68.6
70.0
70.8
71.9
60.5
62.7
64.5
65.1
66.7
59.7
61.0
62.7
64.1
65.7
58.7
60.0
61.4
63.1
65.7
58.2
59.6
60.7
62.0
62.8
57.9
59.3
60.4
61.7
62.7
Jul.
1
2
3
4
5*
83.4
85.9
88.5
89.7
88.8
61.6
63.4
65.1
67.1
64.7
77.3
80.0
81.9
83.3
82.7
55.2
66.2
67.9
68.9
68.5
72.1
74.4
76.2
77.1
77.0
66.2
68.3
70.2
71.3
70.9
65.2
65.9
68.1
68.4
67.6
64.7
65.0
67.3
67.2
67.2
63.2
64.1
65.1
66.1
65.7
62.9
63.9
64.8
65.9
65.6
Aug.
1
2
3
4
5*
90.3
88.7
86.6
83.3
81.6
66.6
66.2
65.0
63.4
60.5
83.2
81.9
80.3
77.0
76.9
70.1
69.4
68.0
66.5
65.1
76.7
76.8
75.5
73.6
72.2
71.6
71.5
70.4
68.8
52.5
70.5
69.7
70.0
69.5
69.3
69.4
69.4
69.2
68.8
68.7
67.3
68.1
68.5
68.7
68.8
67.1
67.9
68.3
68.5
68.5
Jan.
1
2
3
4
5*
Feb.
23
Weekly Mean Soil Temperatures
15 Year Average (1961 to 1968 and 1970 to 1978)
For Woodburn Silty Clay Loam Soil
2 inch
Month, Week Max. Min.
4 inch
Max.
Min.
8 inch
Max.
Min.
20 inch
Max.
Min.
40 inch
Max.
Min.
Sept.
1
2
3
4
5*
81.3
73.3
74.8
73.7
69.8
61.1
58.5
57.4
56.4
54.0
76.5
73.1
70.6
68.8
65.5
64.4
61.9
59.8
54.5
55.9
71.3
68.8
66.8
69.5
61.9
66.7
64.4
63.1
61.3
58.5
68.0
66.5
65.3
64.0
60.0
67.3
66.0
64.7
63.3
59.7
68.2
68.1
67.4
66.8
66.0
68.0
67.9
67.3
66.6
66.0
Oct.
1
2
3
4
5*
69.2
63.4
61.1
56.1
55.5
53.5
51.0
48.3
48.9
46.5
65.5
60.9
57.8
54.0
53.9
55.6
54.5
51.0
49.7
48.8
64.7
58.4
55.6
52.6
50.5
58.6
55.3
51.9
47.5
50.0
62.0
60.0
57.6
55.4
54.9
61.5
59.3
56.9
54.9
54.4
65.7
63.7
63.0
61.4
60.8
65.4
63.5
62.6
61.2
60.6
Nov.
1
2
3
4
5*
53.1
51.1
48.1
46.6
46.9
44.5
44.2
42.1
40.8
42.4
51.1
49.3
47.4
45.4
45.9
47.0
45.3
44.4
42.4
43.5
49.9
48.8
46.6
44.8
45.4
47.8
46.6
44.9
43.0
43.9
52.8
50.8
49.6
48.4
49.6
52.3
50.3
49.1
48.0
49.0
59.6
58.0
56.8
55.3
54.4
59.2
57.6
56.5
54.5
54.1
Dec.
1
2
3
4
5*
45.0
42.6
43.2
43.2
42.2
40.5
38.4
39.3
38.9
38.6
46.0
45.1
42.1
42.3
40.0
41.7
40.4
39.9
40.4
38.0
43.0
44.7
41.6
41.5
38.9
41.5
40.3
40.2
40.3
37.7
46.5
45.2
43.4
43.3
39.1
45.5
44.5
42.7
42.6
39.0
53.2
52.2
50.8
50.5
50.9
52.9
52.0
50.6
50.3
50.8
* Average of only three to eight years data.
24