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

74°F

23°C

Humidity 34%
Wind Speed NW 9 mph
Barometer 29.86 in (1011.1 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 20 Mar 6:54 pm CDT
Extended Forecast for

Bement IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 44. Northwest wind 6 to 10 mph becoming east northeast after midnight. Winds could gust as high as 15 mph.

    Low: 44 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 77. East wind 6 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 15 mph.

    High: 77 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 58. South southwest wind 8 to 14 mph, with gusts as high as 21 mph.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 80. Breezy, with a south southwest wind 14 to 21 mph becoming north northwest in the afternoon. Winds could gust as high as 28 mph.

    High: 80 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 34. Breezy, with a north wind 16 to 22 mph, with gusts as high as 30 mph.

    Low: 34 °F

    Decreasing
    Clouds and
    Breezy

  • Monday

    Monday: Sunny, with a high near 52. North wind 11 to 14 mph, with gusts as high as 20 mph.

    High: 52 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 34. Northeast wind around 8 mph becoming east southeast after midnight.

    Low: 34 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 58.

    High: 58 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 44. Northwest wind 6 to 10 mph becoming east northeast after midnight. Winds could gust as high as 15 mph.
Saturday
Sunny, with a high near 77. East wind 6 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 15 mph.
Saturday Night
Mostly clear, with a low around 58. South southwest wind 8 to 14 mph, with gusts as high as 21 mph.
Sunday
Partly sunny, with a high near 80. Breezy, with a south southwest wind 14 to 21 mph becoming north northwest in the afternoon. Winds could gust as high as 28 mph.
Sunday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 34. Breezy, with a north wind 16 to 22 mph, with gusts as high as 30 mph.
Monday
Sunny, with a high near 52. North wind 11 to 14 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 34. Northeast wind around 8 mph becoming east southeast after midnight.
Tuesday
Mostly cloudy, with a high near 58.
Tuesday Night
Partly cloudy, with a low around 39.
Wednesday
Mostly cloudy, with a high near 59.
Wednesday Night
Mostly cloudy, with a low around 46.
Thursday
Mostly sunny, with a high near 74. Breezy.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 36.
Friday
Partly sunny, with a high near 48.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Bement IL
 39.92°N 88.56°W (Elev. 676 ft)
Last Update:
7:36 pm CDT Mar 20, 2026
Forecast Valid:
7pm CDT Mar 20, 2026-6pm CDT Mar 27, 2026
 
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Additional Resources

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