A Pacific storm is bringing areas of low elevation rain, moderate to heavy mountain snow, and high winds to the Northwest. Strong Santa Ana winds and very dry conditions are producing elevated to critical fire weather conditions in southern California. Isolated strong to severe thunderstorms are possible through early Wednesday morning across parts of northeast Texas into western Tennessee. Read More >
Central Illinois
Weather Forecast Office
| Month | Average High (°F) |
Average Low (°F) |
Mean Temperature (°F) |
Heating Degree Days |
Cooling Degree Days |
Average Precip. (in.) |
Average Snow (in.) |
|---|---|---|---|---|---|---|---|
| January | 35.9 | 19.9 | 27.9 | 1150 | 0 | 2.03 | 6.7 |
| February | 41.1 | 23.7 | 32.4 | 913 | 0 | 1.93 | 6.1 |
| March | 53.5 | 33.2 | 43.2 | 681 | 3 | 276 | 3.1 |
| April | 65.6 | 43.3 | 54.4 | 336 | 19 | 3.97 | 0.3 |
| May | 75.7 | 54.4 | 65.1 | 111 | 112 | 4.52 | 0 |
| June | 84.0 | 63.3 | 73.7 | 11 | 270 | 4.61 | 0 |
| July | 86.8 | 66.2 | 76.5 | 1 | 357 | 3.85 | 0 |
| August | 85.4 | 64.3 | 74.9 | 3 | 308 | 3.37 | 0 |
| September | 80.2 | 55.8 | 68.0 | 61 | 151 | 2.88 | 0 |
| October | 67.4 | 44.6 | 56.0 | 310 | 30 | 3.26 | 0.1 |
| November | 52.7 | 34.2 | 43.5 | 648 | 1 | 2.71 | 1.2 |
| December | 40.7 | 25.2 | 32.9 | 993 | 0 | 2.15 | 4.3 |
| Annual | 64.1 | 44.0 | 54.0 | 5215 | 1232 | 38.04 | 21.8 |
Period used for normals: 1991-2020
| Average date of first measurable snow | November 29 |
| Average date of last measurable snow | March 17 |
| Average number of days with measurable snow | 17.6 |
| Average number of days with at least 1" of snow | 6.7 |
US Dept of Commerce
National Oceanic and Atmospheric Administration
National Weather Service
Central Illinois
1362 State Route 10
Lincoln, IL 62656
217-732-7321 (forecast recording) or 217-732-3089
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