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

59°F

15°C

Humidity 87%
Wind Speed E 7 mph
Barometer 30.24 in (1023.6 mb)
Dewpoint 55°F (13°C)
Visibility 9.00 mi
Last update 14 Oct 11:54 pm CDT
Extended Forecast for

Bement IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 57. East northeast wind 7 to 9 mph.

    Low: 57 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 77. Northeast wind around 6 mph.

    High: 77 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 56. East northeast wind around 7 mph.

    Low: 56 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 78. East southeast wind 7 to 9 mph.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 53. Southeast wind around 8 mph.

    Low: 53 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 79. South wind 9 to 14 mph, with gusts as high as 18 mph.

    High: 79 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 60. South southeast wind around 10 mph, with gusts as high as 15 mph.

    Low: 60 °F

    Partly Cloudy

  • Saturday

    Saturday: Showers likely, mainly after 1pm. Partly sunny, with a high near 76. Chance of precipitation is 70%.

    High: 76 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.

    Low: 48 °F

    Showers
    Likely

Detailed Forecast

Overnight
Mostly cloudy, with a low around 57. East northeast wind 7 to 9 mph.
Wednesday
Mostly cloudy, with a high near 77. Northeast wind around 6 mph.
Wednesday Night
Mostly cloudy, with a low around 56. East northeast wind around 7 mph.
Thursday
Sunny, with a high near 78. East southeast wind 7 to 9 mph.
Thursday Night
Partly cloudy, with a low around 53. Southeast wind around 8 mph.
Friday
Partly sunny, with a high near 79. South wind 9 to 14 mph, with gusts as high as 18 mph.
Friday Night
Partly cloudy, with a low around 60. South southeast wind around 10 mph, with gusts as high as 15 mph.
Saturday
Showers likely, mainly after 1pm. Partly sunny, with a high near 76. Chance of precipitation is 70%.
Saturday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Sunday
A 30 percent chance of showers before 1pm. Mostly sunny, with a high near 66.
Sunday Night
Mostly clear, with a low around 41.
Monday
Sunny, with a high near 69.
Monday Night
Mostly clear, with a low around 46.
Tuesday
Sunny, with a high near 70.
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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:
9:22 pm CDT Oct 14, 2025
Forecast Valid:
12am CDT Oct 15, 2025-6pm CDT Oct 21, 2025
 
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