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.

Mostly Cloudy

78°F

26°C

Humidity 43%
Wind Speed NW 12 mph
Barometer 30.02 in (1016.0 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 19 Jun 2:54 pm CDT
Extended Forecast for

3 Miles WNW Warrensburg IL

  • Juneteenth

    Juneteenth: Sunny, with a high near 79. West northwest wind around 9 mph.

    High: 79 °F

    Sunny

  • Tonight

    Tonight: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 61. West northwest wind around 6 mph becoming light and variable.

    Low: 61 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 81. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

    High: 81 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 5am. Partly cloudy, with a low around 62. Light and variable wind becoming east around 6 mph after midnight.

    Low: 62 °F

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A chance of showers before 7am, then showers and possibly a thunderstorm between 7am and 1pm, then showers and thunderstorms after 1pm. High near 77. East southeast wind 9 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    High: 77 °F

    Showers then
    T-storms

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 61. Breezy, with a south wind 14 to 20 mph becoming north after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 61 °F

    Showers and
    Breezy

  • Monday

    Monday: Partly sunny, with a high near 75. North northeast wind around 15 mph, with gusts as high as 21 mph.

    High: 75 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

Detailed Forecast

Juneteenth
Sunny, with a high near 79. West northwest wind around 9 mph.
Tonight
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 61. West northwest wind around 6 mph becoming light and variable.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 81. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Saturday Night
A 30 percent chance of showers after 5am. Partly cloudy, with a low around 62. Light and variable wind becoming east around 6 mph after midnight.
Sunday
A chance of showers before 7am, then showers and possibly a thunderstorm between 7am and 1pm, then showers and thunderstorms after 1pm. High near 77. East southeast wind 9 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Sunday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 61. Breezy, with a south wind 14 to 20 mph becoming north after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Monday
Partly sunny, with a high near 75. North northeast wind around 15 mph, with gusts as high as 21 mph.
Monday Night
Partly cloudy, with a low around 55.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
Mostly sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Warrensburg IL
 39.96°N 89.11°W (Elev. 610 ft)
Last Update:
1:26 pm CDT Jun 19, 2026
Forecast Valid:
3pm CDT Jun 19, 2026-6pm CDT Jun 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation