The average annual temperature in a deciduous forest is 50° F. The average rainfall is 30 to 60 inches a year. Most deciduous forests are found in Eastern North America somewhere around 35-48° N, and Europe and Asia around 4560° N. The average temperature is around 50° F (about 10° C). The average rainfall is 30-60 inches (75-150 cm ) per year. You can find all four seasons: winter (cold and frosty), summer (hot and humid), fall (cool and breezy), and spring (warm and breezy). There is about a 6 month growing season. http://www.blueplanetbiomes.org/climate.htm Temperature -30°C to 30°C, yearly average is 10°C, hot summers, cold winters Precipitation 750 to 1,500 mm of rain per year http://earthobservatory.nasa.gov/Experiments/Biome/graphs.php#temperate A favorite saying among the natives is "if you don't like the weather, wait a minute". Of course, we are talking about climate here, not weather, but the principle remains. Over the course of the year the climate will range from cold with precipitation in the form of snow, to hot, with precipitation in the form of rain. Precipitation may vary with the seasons as well, with some seasons being wetter than others. The average annual temperature ranges up to about 20� C down to freezing. Precipitation ranges from around 50 cm yr-1 in the colder regions to over 200 cm/yr. In Ohio, at least, we tend to have most of the precipitation fall in the spring and early summer, with late summer and early fall being dry. We get rain or snow in the late fall and winter, depending on where in the state one is. In northern Ohio, Lake Erie moderates temperature in the fall, resulting in a band around the lake where the first fall frost is noticeably later than it is a few miles inland. Historically, this area (an similar regions in New York) have been good for growing grapes. The (relatively) warm waters of Lake Erie are also responsible for lake-effect snows in the winter (until the lake freezes). Air coming across the unfrozen water picks up moisture which falls as snow; this is particularly noticeable in the "snow belt" which extends from Cleveland to Buffalo although sometimes that snow may fall as far inland as Pittsburgh. On the other hand, spring comes late in northern Ohio as the now cold water of the lake puts a chill on things. The cool lake waters do make for a cooler and less humid summer as well. Southern Ohio has a different feel to it. Snow is not as common in the winter, although a snowstorm or two is not uncommon. Long stretches of below zero temperatures are not very common, and the norm is for the temperature to get above zero at least part of the day. The summers are hotter, and, at least along the Ohio River, much more humid. I grew up in Ohio and have lived in 4 different parts of the state. The impact of global climate change has been noticeable; there is less snow and the winters are warmer than when I was a kid (and had to walk to school through 6 feet (2 meters) of snow, uphill both ways). http://www.marietta.edu/~biol/biomes/tempded.htm The temperate deciduous forest biome occupies most of the eastern part of the United States and a small strip of southern Ontario. Precipitation varies from 28 inches per year in the northwestern section of the biome to 60 inches per year in the southeastern part; in most areas the precipitation is distributed evenly throughout the year. Frost occurs throughout the biome, and summer and winter are distinct seasons. http://dendro.cnre.vt.edu/Forsite/tdfbiome2.htm Climate: Associated with warmer continental and humid subtropical climates (Dfa, Cfa, and–in Europe, Cfb). There is an approximately 6 month growing season. The 20 to 60 inches of precipitation is distributed evenly throughout the year. The non-growing season is due to temperature-induced drought during the cold winters. https://php.radford.edu/~swoodwar/biomes/?page_id=94 Temperature and Precipitation: The average temperature in temperate deciduous forests is roughly 75°F (24°C) but gets as high as 86°F (30°C), depending on the altitude of the forest. Forests higher in the mountains are colder. Deciduous forests receive from 2 to 5 feet (0.5-1.5 m) of precipitation (both rain and snow) each year. Humidity in these forests is high, from 60% to 80%. Precipitation: 30 to 60 inches of rain. 2 to 5 feet of rain and snow. 20 to 60 inches of precipitation. 28 (northwestern) to 60(southeastern) inches of precipitation. 750 to 1,500 mm of rain. 50 cm to 200 cm of precip. Humidity: 60 to 80% humidity. Summer is hot and humid. Temp: 75 to 86 degrees F. 71 F to 32 F. 0 F to 85 F. Average 50 F. Average 50 F. Daylight totals: