Central Illinois
Weather Forecast Office
Month | Average High (°F) |
Average Low (°F) |
Mean Temperature (°F) |
Heating Deg. Days |
Cooling Deg. Days |
Average Precip. (inches) |
Average Snow (inches) |
---|---|---|---|---|---|---|---|
January | 34.5 | 17.8 | 26.1 | 1204 | 0 | 2.17 | 5.7 |
February | 39.5 | 21.6 | 30.6 | 964 | 0 | 1.92 | 6.2 |
March | 51.7 | 31.1 | 41.4 | 734 | 2 | 2.70 | 1.8 |
April | 64.4 | 40.8 | 52.6 | 383 | 11 | 4.24 | 0.0 |
May | 74.8 | 52.4 | 63.6 | 132 | 88 | 4.37 | 0 |
June | 83.3 | 61.3 | 72.3 | 15 | 234 | 4.16 | 0 |
July | 85.5 | 64.5 | 75.0 | 2 | 311 | 5.06 | 0 |
August | 84.0 | 61.3 | 72.6 | 6 | 243 | 3.47 | 0 |
September | 79.2 | 53.4 | 66.3 | 78 | 117 | 3.30 | 0 |
October | 66.3 | 41.8 | 54.1 | 357 | 17 | 3.42 | 0.1 |
November | 51.4 | 32.0 | 41.7 | 700 | 0 | 2.88 | 0.6 |
December | 39.2 | 23.1 | 31.1 | 1049 | 0 | 2.29 | 4.9 |
Annual | 62.8 | 41.7 | 52.3 | 5624 | 1014 | 39.60 | 19.3 |
Period used for normals: 1991-2020
Average date of first measurable snow | November 30 |
Average date of last measurable snow | March 19 |
Average number of days with measurable snow | 16.6 |
Average number of days with at least 1" of snow | 6.0 |
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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