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

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

24°F

-4°C

Humidity 55%
Wind Speed SW 5 mph
Barometer 30.36 in (1029.0 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 23 Feb 8:54 pm CST
Extended Forecast for

Warrensburg IL

  • Tonight

    Tonight: Increasing clouds, with a low around 18. Light and variable wind becoming south 5 to 9 mph after midnight. Winds could gust as high as 16 mph.

    Low: 18 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 46. Breezy, with a south wind 11 to 16 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 40 mph.

    High: 46 °F

    Mostly Cloudy
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 27. Southwest wind 10 to 14 mph becoming west northwest after midnight. Winds could gust as high as 23 mph.

    Low: 27 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Sunny, with a high near 44. West northwest wind 7 to 11 mph, with gusts as high as 16 mph.

    High: 44 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A chance of rain before 9pm, then rain and snow likely between 9pm and 3am, then snow likely after 3am. Mostly cloudy, with a low around 29. North wind 6 to 10 mph becoming east northeast in the evening. Winds could gust as high as 16 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    Low: 29 °F

    Chance
    Rain/Snow
    then
    Rain/Snow
    Likely

  • Thursday

    Thursday: A chance of rain and snow before noon. Mostly cloudy, then gradually becoming sunny, with a high near 43. East northeast wind 8 to 11 mph becoming north northwest in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 30%.

    High: 43 °F

    Chance
    Rain/Snow
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 28. North northwest wind 6 to 8 mph becoming south after midnight.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 18. Light and variable wind becoming south 5 to 9 mph after midnight. Winds could gust as high as 16 mph.
Tuesday
Mostly cloudy, with a high near 46. Breezy, with a south wind 11 to 16 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 40 mph.
Tuesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 27. Southwest wind 10 to 14 mph becoming west northwest after midnight. Winds could gust as high as 23 mph.
Wednesday
Sunny, with a high near 44. West northwest wind 7 to 11 mph, with gusts as high as 16 mph.
Wednesday Night
A chance of rain before 9pm, then rain and snow likely between 9pm and 3am, then snow likely after 3am. Mostly cloudy, with a low around 29. North wind 6 to 10 mph becoming east northeast in the evening. Winds could gust as high as 16 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Thursday
A chance of rain and snow before noon. Mostly cloudy, then gradually becoming sunny, with a high near 43. East northeast wind 8 to 11 mph becoming north northwest in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 30%.
Thursday Night
Mostly clear, with a low around 28. North northwest wind 6 to 8 mph becoming south after midnight.
Friday
Sunny, with a high near 58.
Friday Night
Mostly clear, with a low around 36.
Saturday
Mostly sunny, with a high near 57.
Saturday Night
Mostly cloudy, with a low around 26.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 40.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 25.
Monday
A chance of rain. Mostly cloudy, with a high near 39.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Warrensburg IL
 39.93°N 89.05°W (Elev. 699 ft)
Last Update:
8:36 pm CST Feb 23, 2026
Forecast Valid:
9pm CST Feb 23, 2026-6pm CST Mar 2, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation