PUCAT
Local Climatological data for
Oregon State University
1981
With Normals, Means, and Extremes
Special Report 6
July 1982
Agricultural Experiment Station
Oregon State University, Corvallis
PREFACE
The official weather station for Corvallis is at the Oregon State
University Hyslop Field Laboratory, six miles northeast of Corvallis,
Oregon, on Highway 20. On the main Willamette Valley floor at 251 feet
above sea level, latitude 44° 25'N, longitude 123° 15'W, the station is
operated by the Oregon State University Crop Science Department in cooperation with the National Weather Service.
Normal temperatures and, precipitation are based on a standard 30-year
period, updated at the end of each decade. Normals used in this publication
are for the 1951-1980 period.
Jim M. Crane
Experimental Biological Technician
Crop Science Department
Oregon State University
Corvallis, Oregon 97331
AVERAGE MONTHLY MAXIMUM TEMPERATURES
1951 - 1981
Year
Jan
Feb
Mar
Apr
May
June
July
Aug
Sept
Oct
Nov
Dec
1951
1952
1953
1954
1955
46.2
45.0
51.5
45.6
43.7
52.4
50.9
51.4
50.8
48.3
51.6
53.3
53.3
53.6
48.9
68.2
65.6
58.8
59.4
53.1
69.3
65.6
62.3
68.2
64.5
80.2
69.8
66.2
66.9
71.9
81.4
84.0
79.7
76.1
73.6
84.3
81.1
77.5
76.0
80.7
78.9
80.6
76.6
72.4
74.1
63.2
71.9
64.8
63.3
62.3
53.7
46.3
54.3
55.9
48.3
44.9
48.0
47.7
46.8
46.5
1956
1957
1958
1959
1960
46.4
37.6
47.2
47.6
41.3
41.6
49.3
54.4
48.8
49.1
51.3
53.1
53.9
54.3
53.3
62.2
61.1
58.6
61.2
59.3
69.9
67.5
73.0
63.5
62.0
68.6
72.9
73.7
71.4
75.2
82.8
78.1
86.0
83.7
85.2
79.7
77.5
86.7
81.2
78.0
76.5
79.9
75.4
70.0
75.7
61.2
63.1
67.5
64.0
65.3
50.5
52.6
53.5
53.6
52.8
45.0
48.6
51.0
45.4
45.6
1961
1962
1963
1964
1965
50.2
43.8
41.5
47.0
44.1
52.7
48.8
56.1
49.9
50.5
53.4
51.4
53.8
51.7
59.0
59.0
62.5
54.6
57.0
61.3
63.5
59.5
66.7
63.0
64.6
77.3
72.6
70.3
69.0
72.3
81.7
80.5
74.0
78.5
82.6
84.8
78.2
78.7
77.2
79.9
72.1
76.1
77.4
73.3
74.9
63.6
61.7
64.3
66.3
65.8
49.8
54.4
52.4
48.1
54.2
47.0
47.3
45.4
45.6
43.6
1966
1967
1968
1969
1970
45.0
48.8
45.5
39.9
45.7
48.9
52.6
56.5
46.5
54.3
52.5
52.0
56.5
57.3
55.6
63.0
54.7
58.9
58.7
55.9
69.3
68.2
64.8
70.0
66.6
73.7
76.9
72.8
74.5
77.4
78.5
84.1
81.4
78.9
82.2
81.6
88.9
76.2
79.0
81.9
76.0
82.1
72.7
74.8
71.9
64.2
63.1
61.8
60.4
63.1
54.3
54.0
52.9
52.6
54.0
49..1
46.5
44.0
46.9
45.1
1971
1972
1973
1974
1975
44.1
44.5
44.8
43.5
48.0
48.5
50.6
52.6
47.3
48.1
50.2
56.7
53.3
54.0
52.1
58.0
55.4
60.9
57.5
54.5
66.5
69.0
70.1
63.6
65.9
67.5
73.1
73.4
74.6
71.6
80.9
84.8
82.9
77.5
79.8
83.1
85.0
78.9
82.2
76.0
72.0
72.7
75.1
83.6
80.6
61.0
65.2
62.0
68.1
60.5
50.5
53.6
49.3
53.4
51.9
44.5
43.0
48.9
49.3
48.4
1976
1977
1978
1979
1980
47.4
44.8
46.6
37.5
44.8
49.3
54.5
51.7
47.1
50.8
52.2
52.5
59.2
58.3
53.8
57.3
62.9
57.8
59.2
62.0
67.0
61.8
63.6
68.0
64.9
69.9
74.6
75.0
75.7
67.8
79.1
78.8
80.7
82.0
80.6
76.1
85.6
80.0
78.8
79.4
76.5
70.8
69.9
76.5
76.5
66.5
64.1
67.1
67.4
67.1
55.6
51.2
48.9
51.2
54.3
43.6
48.9
43.0
49.9
48.6
30 Year
Average
45.0
50.0
53.7
59.3
66.1
72.6
80.7
80.4
75.5
64.0
52.4
46.6
Current
Year
1981
47.1
50.0
56.9
59.4
64.6
70.2
79.6
84.8
77.2
61.8
54.4
48.7
AVERAGE MONTHLY MINIMUM TEMPERATURES
1951 - 1981
Year
Jan
Feb
Mar
Apr
May
June
July
Aug
Sept
Oct
Nov
Dec
1951
1952
1953
1954
1955
34.7
33.9
41.0
33.0
32.1
36.9
35.9
35.1
32.6
31.1
34.0
37.8
35.6
31.7
32.8
39.2
40.5
39.4
38.5
35.6
44.6
40.9
43.6
43.4
39.9
48.5
46.0
46.9
47.4
47.1
50.2
49.6
49.3
49.4
48.7
49.5
48.6
52.3
50.1
47.1
48.3
46.5
49.8
46.2
45.5
44.9
51.6
41.2
38.6
43.0
39.5
30.5
39.8
41.1
36.3
33.5
34.8
35.8
32.7
34.9
1956
1957
1958
1959
1960
35.4
25.8
34.7
35.9
29.7
30.2
34.5
41.2
33.6
34.4
35.7
39.5
34.6
35.8
35.8
39.0
40.8
40.9
39.1
39.7
46.0
47.5
46.7
42.7
42.7
46.6
49.5
53.6
49.0
47.9
50.8
49.1
54.5
51.4
49.2
50.6
48.4
52.7
49.2
49.2
47.1
48.8
48.6
47.8
46.9
40.8
42.3
41.5
43.9
41.7
32.7
31.2
38.9
34.1
37.2
33.8
36.7
38.2
33.5
31.8
1961
1962
1963
1964
1965
36.1
29.5
26.7
34.6
35.0
39.2
33.8
39.0
31.9
35.9
38.2
35.2
35.5
34.9
35.9
40.2
40.6
38.9
37.8
40.7
44.9
42.4
43.8
40.3
40.8
49.6
45.5
48.1
47.5
46.2
50.9
48.7
50.0
50.7
50.5
52.6
50.0
51.6
50.4
53.1
45.1
48.5
51.1
43.9
46.1
40.6
43.5
43.0
40.7
43.8
33.5
39.3
39.7
35.6
41.4
35.1
35.9
32.2
34.8
32.6
1966
1967
1968
1969
1970
34.2
37.5
33.9
28.4
36.2
32.6
33.6
39.6
32.1
35.4
36.6
35.3
37.7
34.1
36.5
39.3
34.8
35.8
37.6
36.9
42.2
41.8
42.7
45.8
42.0
48.3
49.9
48.1
53.6
50.2
50.9
50.4
50.0
49.7
50.2
50.7
52.9
51.9
47.9
48.9
49.7
48.8
48.0
48.9
45.4
40.9
42.6
40.1
41.3
39.4
39.7
39.7
38.3
37.2
37.8
38.5
35.4
32.4
35.9
34.0
1971
1972
1973
1974
1975
34.9
32.4
31.3
29.9
36.8
33.3
35.2
36.8
35.0
34.0
34.6
40.2
36.3
37.2
35.8
37.8
37.1
39.1
40.7
35.1
42.9
44.2
43.5
42.4
42.4
46.5
49.9
49.6
48.4
46.7
50.6
52.8
51.0
49.5
51.1
52.0
52.6
48.6
51.8
50.4
46.0
46.2
50.5
48.2
46.6
39.7
40.6
43.6
37.4
43.7
37.4
40.8
38.3
38.5
35.5
33.4
27.2
38.5
37.1
36.0
1976
1977
1978
1979
1980
34.7
27.8
37.2
25.7
29.9
32.9
34.6
40.0
36.0
35.4
34.7
34.7
40.4
38.6
37.5
37.8
37.6
42.2
41.3
40.1
41.2
41.6
44.7
43.5
43.1
44.4
47.7
51.1
46.4
48.2
50.4
49.1
52.7
50.9
52.4
52.2
53.6
53.2
50.8
47.3
49.3
47.8
49.6
50.0
47.2
41.1
43.8
40.4
45.9
41.4
38.1
37.7
30.9
36.1
39.8
31.3
38.8
29.6
37.1
37.2
30 Year
Average
33.0
34.7
36.1
38.8
43.2
48.2
50.5
50.9
48.1
41.6
37.2
34.6
Current
Year
1981
34.1
35.5
36.7
40.6
44.2
48.3
51.3
52.2
47.3
40.9
39.8
37.1
METEOROLOGICAL DATA FOR THE CURRENT YEAR 1981
Hyslop Field Laboratory
Corvallis, Oregon
44° 38'
Latitude
Longitude 123° 12'
Elevat'on (ground) 225 ft.
0
0
,
m
'
-0
cc 0
›.5 >.,
Temp erature
Month
Averages
>1
E
E
7-74
82
J
A
M
J
J
A
S
1
N
D
Year
E
=
>, E
=
'7.1
.0
• '
•
'
8
4>
>5
-C
0
/-
3 .
.
O.
'8.3
.4
9.3
6
Imam
79
m
C -I
M
ID C
X •--I
3
0
-I
2
13
10
30
13
7
11141111Y6111
8
CI C
0
a,
0)
•,=
8
.71 74 .
4•J
W
=
t
F
.6
.8
.8
0.0
afigniiratii
O.
Extremes
30
8
10
IIMII
31
6
.
1'"
1
6
33
LLII
89
1'4
270
329
00
43
48.7
39.8
37.1
47.1
4 .9
62.9
42.3
52.6
Mont
•8
108
98
6
1
Immo=
108
Aug
10
[al
28
27
9
20
Mar
50
10
•4
Snow, Sleet
U,
>,
8
40
71
4-,
0
I-
M
J
J
A
S
0
N
D
Year
0
4,;3'
2
5- 0
o c
O....
03
> C
W...
.62
'.00
5.02
7. 0
7.59
. 8
IfJ
0
fall
'36
'7.3
IIMIEM
38 wimarai
IIEBMMMMMBBMMILMMMiLrMWMMNMIMI
4.4
magimusimaim
8'.8
INN= 68.5
Precipitation
J
F
M
A
C
2.27
4.44
3.00
2.37
2.99
2.58
.10
.01
3.09
5.52
6.73
47.08
5.-
C
0
••--
.0
0
4>
0
iC
01-. 0
E .- 500 0
Z •X
0 I.ol•
S.
MI
=
W
Sml.
CD CV
C
4>
4,
W
4>
M
=
11
17
18
26
.42
.87
.78
.42
.78
1.17
.09
.01
1.82
1.22
1.31
2.73
183
2.73
26
14
4
9
18
8
7
30
27
6
12
6
Dec
6
.o
20
17
20
20
16
14
2
1
,It1
4>
0
I-
°
•
0 In
.4-,
5.'C 2
0S.. Mt
CD C•I
.1-,3.1
='C
0
0
0
0
0
0
0
0
0
0
0
.7
.7
.7
.7
4) Also earlier dates
4
31
Dec
31
NORMALS, MEANS, AND EXTREMES
Temperature
Normal
Extremes
.c
C
o
W.
(a)
J
F
M
A
M
J
J
A
S
0
N
0
e
>, =
E
,-. 0.,- X
t0 MO
C7 =
30+
45.0
50.0
53.7
59.3
66.1
72.6
80.7
80.4
75.5
64.0
52.4
46.6
E
7
>, E
e- n•,- C
M ,CI z
30+
33.0
34.7
36.1
38.8
43.2
48.2
50.5
50.9
48.1
41.6
37.2
34.6
>)
..0
4-,
C
0
M
4-,
'CI 0
S- W
0 -C
U DI
a, •rCC =
30+
39.0
42.4
44.9
49.1
54.7
60.4
65.6
65.7
61.8
52.8
44.8
40.6
91
•64
69
78
91
99
102
107
108
103
92
73
66
Year
62.2
41.4
51.8
108
"l7 4-,
S- ,/,
0 CU
U3
a, 0
ce -I
s_
C
a,
>-
L.
ai
>-
91
-1
-5
12
24
28
32
36
35
26
13
10
-14
19710
19160
1947
1926
1g22
1925
1946
1981
1944
198-0
1890
1980
Aug
1981
>'
,-- C
-0 0
ta CT
1:7 =
M
CJ
M
al C
= .--.
0M
27 S.
0
C CL
CD M
CU >
= LU
16
93
140
242
333
444
500
548
451
348
210
105
69
29
1950
1899
1971
1968+
19150
1929+
1921+
1910
1919
1gr9
1896
1919
Dec
1919
-14
0
cu
-C
u
0
-.
C
._
C
0
...•,
m
.,_
-0
M
CY
In
>, >1
2.67
4.41
5.70
7.84
6.97
4.79
2.09
Precipitation
Snow
as
L
8
Iis;e
s.
Z0
4-
MI
4,
0
_c
4-,
i
(a)
0
30+
7.43
4.82
4 61
2.40
1.92
1.20
.31
.81
1.4°
3.3.
D
7.1.1
J
M
J
J
A
S
Year
r, 2
,.._
I0
0 -ccs
s- a
CU
E
29
E0 ,-›...
.=
xC
2E
30+
21
19
19
17
13
9
3
6
92
15.51
15.23
11.70
7.99
5.71
3.84
2.72
5.24
1--e
2
•
E
S.
>-"
5.40
•I
:
:
169
18.18
L.
CC
E 2
.
Y
1)20
• I
•
x
n-
71
4,
0
.
.
=All
92
197
1904
1904
1937
1896
1952
1947
1968
E
>
0 , -EX .f.
i
2
30+
lIkAll
•• INU'nom'
.12
.43
.22
.16
0
0
0
D
ramitamuunium
IliennaillitaningUll
litallitiMMIll
III=
19
1 . 26
19
1967
1974
19T5
rffilliMal
1.75
1.35
2.18
1947
1968
1969
4
1973
0
-0
0
0
s_
a6
›-
• 4
•
:'
-
1
-0
-
0
-
0
-
num • .
IMMAIMMIRELVIIIMIIIIMANII .
MAIII.W.01
•••
ov
42.35
E
>,
E7 ,--c
•.-
.,-C
e
0 VIS •
E
inaminanumutiongus • •
ept
19750
(a) Length of records, years
+
Also earlier dates
+
1951-1980
5
4.28
an
1965
6.1
51.9
an
1950
MONTHLY PRECIPITATION
1951 - 1981
(inches)
Dec
Total
5.84
1.55
6.96
5.86
7.32
6.13
7.13
7.81
6.92
12.64
38.38
26.37
49.27
42.08
47.36
5.96
3.14
2.68
1.57
2.52
1.38
2.81
8.49
2.58
10.49
4.56
10.38
4.15
3.35
4.15
40.59
39.29
42.86
32.84
43.80
1.18
1.60
.94
.31
.04
3.73
4.62
2.77
1.25
2.12
6.79
7.89
7.04
9.23
8.70
6.21
2.90
3.91
13.27
7.69
45.89
34.58
38.56
44.70
37.12
.27
T
5.24
T
T
1.71
.84
1.99
3.62
1.06
3.18
6.19
6.32
3.91
4.03
5.27
3.46
6.52
2.86
7.30
7.67
6.32
14.47
11.05
12.47
39.99
35.54
58.73
42.96
53.06
.02
.08
.02
1.81
.62
.48
.24
.70
0
1.68
3.10
2.28
2.52
.07
0
2.80
.88
2.70
1.41
4.30
9.21
4.92
18.28
6.88
5.51
10.13
9.33
12.40
8.15
6.83
57.15
47.06
51.44
50.76
39.33
.47
1.13
.94
.38
1.75
.90
.12
.29
.43
.24
2.08
1.89
2.34
2.67
.01
1.27
3.58
3.40
2.15
.96
1.25
2.58
.98
7.21
1.87
1.42
8.11
3.14
4.11
6.29
1.47
11.03
4.23
6.26
11.33
29.73
41.91
37.64
42.06
42.13
1.92
1.20
.31
.81
1.48
3.36
6.21
7.80
42.35
2.99
2.58
.10
.01
3.09
5.52
6.73
13.98
47.08
Aug
Sept
Oct
.11
0
T
.53
.62
.08
.16
1.74
.64
0
1.23
.40
.49
1.60
1.97
6.78
1.02
3.12
3.56
7.58
1.14
1.07
2.91
1.31
.22
.02
.17
.02
.32
T
.34
.22
.02
T
.64
1.12
1.50
1.30
1.60
.52
2.05
2.31
3.94
.55
1.08
.40
.39
.98
.88
.52
.59
0
.52
.57
.39
.33
.51
.65
.23
.98
.95
1.60
1.51
1.94
2.66
.49
.85
3.45
1.64
1.12
.76
.77
.79
2.46
.53
.49
0
.34
.05
.12
6.16
6.46
3.63
8.87
4.64
4.38
4.27
1.75
2.39
2.40
2.33
2.36
.85
1.46
2.07
2.48
1.01
1.38
.61
1.14
6.71
2.97
4.28
8.35
3.88
4.45
5.09
2.15
2.89
4.02
1.98
1.02
4.94
2.93
3.63
1.14
3.43
3.61
2.11
1.46
7.43
4.82
4.61
2.40
2.27
4.44
3.00
2.37
Feb
Mar
Apr
May
June
July
7.36
5.08
12.40
8.04
3.09
4.62
4.17
5.14
5.25
2.29
4.16
1.75
4.50
2.96
5.51
.65
.92
1.97
2.71
4.58
1.40
.35
3.31
.90
.91
.02
3.84
1.83
3.11
.85
1956
1957
1958
1959
1960
11.89
2.78
8.15
10.52
4.38
5.48
4.89
7.81
4.56
6.49
5.89
7.01
2.55
3.99
7.18
.93
2.11
3.66
.84
3.29
1.98
3.21
1.12
2.20
3.92
1961
1962
1963
1964
1965
4.80
1.21
1.64
11.68
11.45
10.12
3.82
5.23
.79
1.56
7.46
6.37
6.30
4.33
.59
2.23
2.90
4.64
1.61
2.00
1966
1967
1968
1969
1970
10.21
9.50
7.14
9.35
15.51
1.78
1.78
7.11
4.27
5.97
7.21
4.23
3.85
1.31
2.29
1971
1972
1973
1974
1975
10.71
10.10
5.56
11.59
4.66
5.35
5.13
1.65
7.52
5.48
6.59
.96
7.34
2.57
6.69
Year
Jan
1951
1952
1953
1954
1955
1976
1977
1978
1979
1980
30 Year
Average
Current
Year
1981
6
Nov
MONTHLY EVAPORATION FOR CROP SEASON
From Standard Weather Bureau
Open Pan (1953 - 1981)
(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
5.61
6.69
9.08
8.69
6.49
2.18
1968
2.61
**
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
1973
4.41
6.10
6.50
9.48
6.88
5.54
2.11
1974
2.70
4.16
6.99
6.82
8.92
6.97
3.22
1975
2.55
5.12
6.05
7.09
6.16
6.96
1.55
1976
2.64
4.85
5.97
7.61
5.58
5.03
2.71
1977
3.55
4.47
6.70
7.68
7.95
3.32
**
1978
2.63
3.55
5.41
6.57
5.82
2.70
2.10
1979
2.33
4.86
6.42
7.47
5.89
3.92
2,58
1980
2.82
3.77
4.52
8.17
7.09
5.10
3.19
1981
2.62
4.00
5.02
7.50
7.59
5.48
1.91
MEAN
2.67
4.41
5.70
7.84
6.97
4.79
2.09
** Missing data
7
AVERAGE DAILY RADIATION IN LANGLEYS
(1960 - 1963, 1970 - 1981)_
Year
Jan
Feb
Mar
Apr
May
June
Jul y
Aug
Sept
Oct
Nov
Dec
1960
91
197
271
389
459
664
678
524
406
234
128
91
1961
115
137
263
381
475
636
644
511
407
236
123
83
1962
116
178
308
455
533
504
684
514
411
265
119
81
1963
101
152
284
309
528
531
585
502
404
226
114
84
1970
68
171
274
318
479
522
555
457
308
198
93
59
1971
55
111
195
268
442
449
533
447
363
161
68
39
1972
73
109
201
261
424
454
521
423
311
204
115
81
1973
84
156
199
366
466
427
592
458
326
201
86
54
1974
110
118
210
328
423
528
488
471
369
229
87
59
1975
82
146
254
334
480
475
503
427
378
132
107
73
1976
84
128
185
235
378
450
502
359
306
199
102
63
1977
124
139
211
363
344
489
487
430
274
199
86
1978
77
111
261
302
399
494
466
390
259
230
122
72
1979
110
101
264
330
474
509
515
422
360
214
123
71
1980
108
137
229
359
392
416
512
449
341
225
95
67
1981
89
144
270
329
400
453
501
436
347
202
105
64
MEAN
93
140
242
333
444
500
548
451
348
210
105
69
BIBLIOGRAPHY OF OREGON AND OSU CLIMATOLOGY
Bates, E., Northwest USA Climate and Climate Variability, Weather
Service Manuscript, January 1979.
Bates, E., Precipitation Distribution in Oregon: Probability of
Dry Years, National Weather Digest, Vol. 3, No. 4, November 1978.
Bates, E., "Soil Temperature of Oregon's Agricultural Regions." OSU
Special Report 446, November 1975.
Bates, E., "Climatological Data for Oregon Agricultural Regions."
OSU Special Report 591, June 1980.
Calhoun, W., "A Summary of Climate and Weather for Corvallis, Oregon,
1899 Through 1960." Miscellaneous Paper 105, March 1961.
Crane, J., Calhoun, W., and Bates, E., "Hyslop Field Laboratory
Microstation Climate Survey," Special Report 516, March 1979.
Sternes, G. and L. Kierulff, "The Climate of Benton County." ESSA
Weather Service, Portland, August 1969.
Sternes, G., "Climates of the States, Oregon." Climatography of the
United States, No. 60-35, February 1960.
Climatological Data, Oregon. Published monthly plus annual summary by
National Climatic Center, Asheville, North Carolina.