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

59°F

15°C

Humidity 44%
Wind Speed W 10 mph
Barometer 30.01 in (1016.3 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 18 Mar 5:54 pm CDT
Extended Forecast for

Warrensburg IL

  • Tonight

    Tonight: Increasing clouds, with a low around 38. West wind 5 to 7 mph becoming light and variable.

    Low: 38 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 67. South southeast wind around 7 mph becoming east northeast in the afternoon.

    High: 67 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 45. East northeast wind around 6 mph becoming south after midnight.

    Low: 45 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 74. West southwest wind 7 to 15 mph, with gusts as high as 20 mph.

    High: 74 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 46. West wind 6 to 9 mph becoming north after midnight.

    Low: 46 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 74. North northwest wind 6 to 10 mph becoming west southwest in the afternoon. Winds could gust as high as 15 mph.

    High: 74 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54. South southwest wind 8 to 13 mph, with gusts as high as 20 mph.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 72. Breezy.

    High: 72 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 33. Breezy.

    Low: 33 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 38. West wind 5 to 7 mph becoming light and variable.
Thursday
Sunny, with a high near 67. South southeast wind around 7 mph becoming east northeast in the afternoon.
Thursday Night
Partly cloudy, with a low around 45. East northeast wind around 6 mph becoming south after midnight.
Friday
Mostly sunny, with a high near 74. West southwest wind 7 to 15 mph, with gusts as high as 20 mph.
Friday Night
Mostly cloudy, with a low around 46. West wind 6 to 9 mph becoming north after midnight.
Saturday
Mostly sunny, with a high near 74. North northwest wind 6 to 10 mph becoming west southwest in the afternoon. Winds could gust as high as 15 mph.
Saturday Night
Mostly clear, with a low around 54. South southwest wind 8 to 13 mph, with gusts as high as 20 mph.
Sunday
Partly sunny, with a high near 72. Breezy.
Sunday Night
Mostly cloudy, with a low around 33. Breezy.
Monday
Partly sunny, with a high near 49.
Monday Night
Mostly cloudy, with a low around 31.
Tuesday
Partly sunny, with a high near 55.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
Mostly cloudy, with a high near 64.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Warrensburg IL
 39.93°N 89.05°W (Elev. 699 ft)
Last Update:
6:01 pm CDT Mar 18, 2026
Forecast Valid:
6pm CDT Mar 18, 2026-6pm CDT Mar 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation