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

66°F

19°C

Humidity 70%
Wind Speed S 10 mph
Barometer 29.89 in (1012.1 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 14 Nov 6:54 pm CST
Extended Forecast for

Bement IL

  • Tonight

    Tonight: Increasing clouds, with a low around 57. South southwest wind 10 to 15 mph, with gusts as high as 23 mph.

    Low: 57 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 74. Breezy, with a south southwest wind 13 to 20 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph.

    High: 74 °F

    Decreasing
    Clouds and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 37. North northwest wind 8 to 11 mph, with gusts as high as 18 mph.

    Low: 37 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 55. Northwest wind 7 to 10 mph, with gusts as high as 15 mph.

    High: 55 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 30. Northwest wind 3 to 6 mph.

    Low: 30 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 55. Light and variable wind becoming east southeast 5 to 9 mph in the morning.

    High: 55 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Rain likely. Mostly cloudy, with a low around 38. East wind 9 to 13 mph, with gusts as high as 16 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 38 °F

    Rain Likely

  • Tuesday

    Tuesday: A 30 percent chance of rain before noon. Partly sunny, with a high near 52.

    High: 52 °F

    Chance Rain
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 57. South southwest wind 10 to 15 mph, with gusts as high as 23 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 74. Breezy, with a south southwest wind 13 to 20 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph.
Saturday Night
Mostly clear, with a low around 37. North northwest wind 8 to 11 mph, with gusts as high as 18 mph.
Sunday
Sunny, with a high near 55. Northwest wind 7 to 10 mph, with gusts as high as 15 mph.
Sunday Night
Mostly clear, with a low around 30. Northwest wind 3 to 6 mph.
Monday
Mostly sunny, with a high near 55. Light and variable wind becoming east southeast 5 to 9 mph in the morning.
Monday Night
Rain likely. Mostly cloudy, with a low around 38. East wind 9 to 13 mph, with gusts as high as 16 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
A 30 percent chance of rain before noon. Partly sunny, with a high near 52.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
Partly sunny, with a high near 54.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 40.
Thursday
Rain likely. Mostly cloudy, with a high near 59.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 41.
Friday
A chance of rain. Partly sunny, with a high near 57.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Bement IL
 39.92°N 88.56°W (Elev. 676 ft)
Last Update:
6:36 pm CST Nov 14, 2025
Forecast Valid:
7pm CST Nov 14, 2025-6pm CST Nov 21, 2025
 
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Additional Resources

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High Temperature

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Chance of Precipitation