National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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 Chill42°F (6°C)
Last update 25 Feb 11:54 am CST
Extended Forecast for

Decatur Airport IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 46. West northwest wind 7 to 11 mph, with gusts as high as 20 mph.

    High: 46 °F

    Mostly Sunny

  • Tonight

    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.

    Low: 28 °F

    Chance
    Rain/Snow
    then Wintry
    Mix Likely

  • Thursday

    Thursday: Mostly sunny, with a high near 49. East northeast wind around 7 mph becoming west southwest in the afternoon.

    High: 49 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 32. South southwest wind 5 to 8 mph.

    Low: 32 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 64. Southwest wind 9 to 17 mph, with gusts as high as 25 mph.

    High: 64 °F

    Sunny

  • Friday Night

    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.

    Low: 34 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 53. Northeast wind 8 to 14 mph, with gusts as high as 21 mph.

    High: 53 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

  • Sunday

    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%.

    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.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Decatur Airport IL
 39.84°N 88.85°W (Elev. 686 ft)
Last Update:
12:36 pm CST Feb 25, 2026
Forecast Valid:
12pm CST Feb 25, 2026-6pm CST Mar 3, 2026
 
Forecast Discussion
 
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Additional Resources

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