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

55°F

13°C

Humidity 80%
Wind Speed SW 13 G 22 mph
Barometer 29.81 in (1009.3 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 4 Nov 7:54 pm CST
Extended Forecast for

Bement IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 47. Southwest wind 8 to 10 mph, with gusts as high as 18 mph.

    Low: 47 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of rain after 5pm. Partly sunny, with a high near 58. West southwest wind 10 to 16 mph, with gusts as high as 22 mph.

    High: 58 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before 8pm. Mostly cloudy, with a low around 39. West wind 7 to 11 mph becoming north after midnight.

    Low: 39 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Friday

    Friday: Cloudy, then gradually becoming mostly sunny, with a high near 51. North northwest wind 10 to 14 mph, with gusts as high as 20 mph.

    High: 51 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 30. North northwest wind 5 to 9 mph becoming light after midnight.

    Low: 30 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 53. Northwest wind 3 to 7 mph.

    High: 53 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 29. Northwest wind around 5 mph becoming calm in the evening.

    Low: 29 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 47. Southwest wind 8 to 10 mph, with gusts as high as 18 mph.
Thursday
A 20 percent chance of rain after 5pm. Partly sunny, with a high near 58. West southwest wind 10 to 16 mph, with gusts as high as 22 mph.
Thursday Night
A 20 percent chance of rain before 8pm. Mostly cloudy, with a low around 39. West wind 7 to 11 mph becoming north after midnight.
Friday
Cloudy, then gradually becoming mostly sunny, with a high near 51. North northwest wind 10 to 14 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 30. North northwest wind 5 to 9 mph becoming light after midnight.
Saturday
Sunny, with a high near 53. Northwest wind 3 to 7 mph.
Saturday Night
Mostly clear, with a low around 29. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 59.
Sunday Night
Mostly clear, with a low around 32.
Monday
Sunny, with a high near 64.
Monday Night
Clear, with a low around 36.
Tuesday
Sunny, with a high near 65.
Tuesday Night
Mostly clear, with a low around 36.
Veterans Day
Sunny, with a high near 64.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Bement IL
 39.92°N 88.56°W (Elev. 676 ft)
Last Update:
7:16 pm CST Nov 4, 2026
Forecast Valid:
8pm CST Nov 4, 2026-6pm CST Nov 11, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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