Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
10°F
-12°C
| Humidity | 76% |
| Wind Speed | N 9 mph |
| Barometer | 30.38 in (1029.8 mb) |
| Dewpoint | 4°F (-16°C) |
| Visibility | 10.00 mi |
| Wind Chill | -3°F (-19°C) |
| Last update | 4 Dec 6:54 am CST |
Extended Forecast for
Decatur Airport IL
Today

High: 16 °F
Sunny
Tonight

Low: 0 °F
Patchy
Freezing FogFriday

High: 30 °F
Mostly Sunny
Friday Night

Low: 22 °F
Mostly Cloudy
Saturday

High: 32 °F
Mostly Cloudy
Saturday Night
Low: 20 °F
Cloudy then
Chance SnowSunday

High: 29 °F
Mostly Cloudy
Sunday Night

Low: 9 °F
Mostly Cloudy
Monday

High: 25 °F
Mostly Sunny
Detailed Forecast
Today
Sunny, with a high near 16. Wind chill values between -3 and 7. North northeast wind 5 to 9 mph.
Tonight
Patchy freezing fog between 7pm and 5am. Partly cloudy, with a low around 0. Wind chill values between -4 and -9. Light and variable wind becoming south around 6 mph after midnight.
Friday
Mostly sunny, with a high near 30. Wind chill values between -2 and 8. South wind 6 to 10 mph.
Friday Night
Mostly cloudy, with a low around 22. South wind 7 to 10 mph becoming west after midnight.
Saturday
Mostly cloudy, with a high near 32. West wind around 6 mph becoming north northeast in the afternoon.
Saturday Night
A 30 percent chance of snow after midnight. Cloudy, with a low around 20. Northeast wind 6 to 8 mph.
Sunday
Mostly cloudy, with a high near 29. North wind 8 to 11 mph, with gusts as high as 15 mph.
Sunday Night
Mostly cloudy, with a low around 9.
Monday
Mostly sunny, with a high near 25.
Monday Night
Mostly cloudy, with a low around 16.
Tuesday
Partly sunny, with a high near 36.
Tuesday Night
Mostly cloudy, with a low around 25.
Wednesday
A chance of rain. Mostly cloudy, with a high near 38.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Decatur Airport IL
39.84°N 88.88°W (Elev. 650 ft)
39.84°N 88.88°W (Elev. 650 ft)
6:36 am CST Dec 4, 2025
7am CST Dec 4, 2025-6pm CST Dec 10, 2025



