Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
47°F
8°C
| Humidity | 37% |
| Wind Speed | NW 12 mph |
| Barometer | 29.76 in (1007.8 mb) |
| Dewpoint | 22°F (-6°C) |
| Visibility | 10.00 mi |
| Wind Chill | 42°F (6°C) |
| Last update | 25 Feb 11:54 am CST |
Extended Forecast for
Decatur Airport IL
This Afternoon

High: 46 °F
Mostly Sunny
Tonight
Low: 28 °F
Chance
Rain/Snow
then Wintry
Mix LikelyThursday

High: 49 °F
Mostly Sunny
Thursday Night

Low: 32 °F
Clear
Friday

High: 64 °F
Sunny
Friday Night

Low: 34 °F
Increasing
CloudsSaturday

High: 53 °F
Mostly Sunny
Saturday Night

Low: 25 °F
Mostly Cloudy
Sunday
High: 37 °F
Chance Snow
then Chance
Rain/Snow
Detailed Forecast
This Afternoon
Mostly sunny, with a high near 46. West northwest wind 7 to 11 mph, with gusts as high as 20 mph.
Tonight
Rain and snow likely before 3am, then a chance of snow and freezing rain between 3am and 4am. Mostly cloudy, with a low around 28. Northwest wind 5 to 8 mph becoming northeast after midnight. Chance of precipitation is 70%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.
Thursday
Mostly sunny, with a high near 49. East northeast wind around 7 mph becoming west southwest in the afternoon.
Thursday Night
Clear, with a low around 32. South southwest wind 5 to 8 mph.
Friday
Sunny, with a high near 64. Southwest wind 9 to 17 mph, with gusts as high as 25 mph.
Friday Night
Increasing clouds, with a low around 34. South southwest wind 8 to 13 mph becoming north northeast after midnight. Winds could gust as high as 18 mph.
Saturday
Mostly sunny, with a high near 53. Northeast wind 8 to 14 mph, with gusts as high as 21 mph.
Saturday Night
Mostly cloudy, with a low around 25.
Sunday
A chance of snow before noon, then a chance of rain and snow. Mostly cloudy, with a high near 37. Chance of precipitation is 40%.
Sunday Night
Rain and snow likely, becoming all snow after midnight. Cloudy, with a low around 22. Chance of precipitation is 60%.
Monday
Partly sunny, with a high near 34.
Monday Night
A chance of rain. Cloudy, with a low around 22.
Tuesday
A chance of rain. Mostly cloudy, with a high near 39.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Decatur Airport IL
39.84°N 88.85°W (Elev. 686 ft)
39.84°N 88.85°W (Elev. 686 ft)
12:36 pm CST Feb 25, 2026
12pm CST Feb 25, 2026-6pm CST Mar 3, 2026



