National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Mostly Cloudy

22°F

-6°C

Humidity 66%
Wind Speed S 14 mph
Barometer 30.20 in (1023.9 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill9°F (-13°C)
Last update 1 Feb 3:54 pm CST
Extended Forecast for

Bement IL

  • This Afternoon

    This Afternoon: A 20 percent chance of snow after 5pm. Mostly cloudy, with a high near 23. South wind around 11 mph, with gusts as high as 16 mph.

    High: 23 °F

    Slight Chance
    Snow

  • Tonight

    Tonight: Snow likely, mainly before 10pm. Mostly cloudy, with a steady temperature around 20. South wind 8 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 20 °F

    Snow Likely

  • Monday

    Monday: Mostly cloudy, with a high near 29. West northwest wind 6 to 10 mph, with gusts as high as 15 mph.

    High: 29 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 17. West northwest wind around 5 mph becoming calm in the evening.

    Low: 17 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Cloudy, then gradually becoming mostly sunny, with a high near 28. Northeast wind 5 to 9 mph.

    High: 28 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 10. North wind around 7 mph.

    Low: 10 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 24. North wind around 6 mph.

    High: 24 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 8.

    Low: 8 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 31.

    High: 31 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of snow after 5pm. Mostly cloudy, with a high near 23. South wind around 11 mph, with gusts as high as 16 mph.
Tonight
Snow likely, mainly before 10pm. Mostly cloudy, with a steady temperature around 20. South wind 8 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Monday
Mostly cloudy, with a high near 29. West northwest wind 6 to 10 mph, with gusts as high as 15 mph.
Monday Night
Mostly cloudy, with a low around 17. West northwest wind around 5 mph becoming calm in the evening.
Tuesday
Cloudy, then gradually becoming mostly sunny, with a high near 28. Northeast wind 5 to 9 mph.
Tuesday Night
Partly cloudy, with a low around 10. North wind around 7 mph.
Wednesday
Mostly sunny, with a high near 24. North wind around 6 mph.
Wednesday Night
Partly cloudy, with a low around 8.
Thursday
Partly sunny, with a high near 31.
Thursday Night
Partly cloudy, with a low around 25.
Friday
Partly sunny, with a high near 36.
Friday Night
Partly cloudy, with a low around 13.
Saturday
Mostly sunny, with a high near 26.
Saturday Night
Partly cloudy, with a low around 17.
Sunday
Partly sunny, with a high near 32.
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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:
3:36 pm CST Feb 1, 2026
Forecast Valid:
4pm CST Feb 1, 2026-6pm CST Feb 8, 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