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

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

84°F

29°C

Humidity 24%
Wind Speed SW 8 mph
Barometer 30.06 in (1017.4 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 9 Oct 3:54 pm CDT
Extended Forecast for

Warrensburg IL

  • Tonight

    Tonight: Increasing clouds, with a low around 60. South southeast wind 9 to 11 mph, with gusts as high as 16 mph.

    Low: 60 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly cloudy, with a high near 82. Southeast wind 9 to 11 mph, with gusts as high as 15 mph.

    High: 82 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 59. East wind 6 to 9 mph.

    Low: 59 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 80. Northeast wind around 6 mph becoming northwest in the afternoon.

    High: 80 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 61. Calm wind becoming south 5 to 7 mph after midnight.

    Low: 61 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Sunny, with a high near 89. Southwest wind 8 to 17 mph, with gusts as high as 21 mph.

    High: 89 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 68. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 68 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers after 1am. Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear
    then Chance
    Showers

Detailed Forecast

Tonight
Increasing clouds, with a low around 60. South southeast wind 9 to 11 mph, with gusts as high as 16 mph.
Saturday
Mostly cloudy, with a high near 82. Southeast wind 9 to 11 mph, with gusts as high as 15 mph.
Saturday Night
Mostly cloudy, with a low around 59. East wind 6 to 9 mph.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 80. Northeast wind around 6 mph becoming northwest in the afternoon.
Sunday Night
Mostly clear, with a low around 61. Calm wind becoming south 5 to 7 mph after midnight.
Columbus Day
Sunny, with a high near 89. Southwest wind 8 to 17 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 68. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 83.
Tuesday Night
A 30 percent chance of showers after 1am. Mostly clear, with a low around 58.
Wednesday
A 50 percent chance of showers. Partly sunny, with a high near 75.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57.
Thursday
Showers likely. Mostly cloudy, with a high near 75.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 54.
Friday
Partly sunny, with a high near 68. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Warrensburg IL
 39.93°N 89.08°W (Elev. 643 ft)
Last Update:
4:36 pm CDT Oct 9, 2026
Forecast Valid:
4pm CDT Oct 9, 2026-6pm CDT Oct 16, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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