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.

Overcast and Breezy

46°F

8°C

Humidity 56%
Wind Speed N 22 G 30 mph
Barometer 29.95 in (1014.6 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 12 Nov 2:54 pm CST
Extended Forecast for

Bement IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 46. Breezy, with a north northwest wind 17 to 21 mph, with gusts as high as 30 mph.

    High: 46 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: A 20 percent chance of snow after 4am. Mostly cloudy, with a low around 32. North northwest wind 13 to 16 mph, with gusts as high as 26 mph.

    Low: 32 °F

    Partly Cloudy
    then Slight
    Chance Snow

  • Friday

    Friday: A slight chance of rain and snow before 11am, then a slight chance of rain between 11am and noon. Partly sunny, with a high near 43. North northwest wind 11 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    High: 43 °F

    Slight Chance
    Rain/Snow
    then Partly
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 26. North northwest wind 6 to 9 mph.

    Low: 26 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 47. Northwest wind around 7 mph.

    High: 47 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 24. North northwest wind around 5 mph becoming calm in the evening.

    Low: 24 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 49. Calm wind.

    High: 49 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 26.

    Low: 26 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 46. Breezy, with a north northwest wind 17 to 21 mph, with gusts as high as 30 mph.
Tonight
A 20 percent chance of snow after 4am. Mostly cloudy, with a low around 32. North northwest wind 13 to 16 mph, with gusts as high as 26 mph.
Friday
A slight chance of rain and snow before 11am, then a slight chance of rain between 11am and noon. Partly sunny, with a high near 43. North northwest wind 11 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 26. North northwest wind 6 to 9 mph.
Saturday
Sunny, with a high near 47. Northwest wind around 7 mph.
Saturday Night
Clear, with a low around 24. North northwest wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 49. Calm wind.
Sunday Night
Clear, with a low around 26.
Monday
Sunny, with a high near 52.
Monday Night
Clear, with a low around 27.
Tuesday
Sunny, with a high near 55.
Tuesday Night
Clear, with a low around 28.
Wednesday
Sunny, with a high near 58.
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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:
1:06 pm CST Nov 12, 2026
Forecast Valid:
3pm CST Nov 12, 2026-6pm CST Nov 18, 2026
 
Forecast Discussion
 
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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