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.

Fair

81°F

27°C

Humidity 79%
Wind Speed NE 5 mph
Barometer 29.93 in (1012.9 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 4 Sep 8:54 pm CDT
Extended Forecast for

3 Miles S Bement IL

Extreme Heat Warning September 4, 08:58pm until September 5, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning September 4, 08:58pm until September 5, 07:00pm

    NOW until 7:00pm Sat

    Extreme Heat Warning

  • Tonight

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 95. Heat index values as high as 104. Light and variable wind becoming north 5 to 10 mph in the morning.

    High: 95 °F

    Hot

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 67. Northeast wind 8 to 11 mph, with gusts as high as 15 mph.

    Low: 67 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 85. East northeast wind 9 to 13 mph, with gusts as high as 16 mph.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 61. East northeast wind 6 to 10 mph.

    Low: 61 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 86. East wind 7 to 9 mph.

    High: 86 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 62. East wind 6 to 9 mph.

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 73. Light south southwest wind.
Saturday
Sunny and hot, with a high near 95. Heat index values as high as 104. Light and variable wind becoming north 5 to 10 mph in the morning.
Saturday Night
Increasing clouds, with a low around 67. Northeast wind 8 to 11 mph, with gusts as high as 15 mph.
Sunday
Sunny, with a high near 85. East northeast wind 9 to 13 mph, with gusts as high as 16 mph.
Sunday Night
Mostly clear, with a low around 61. East northeast wind 6 to 10 mph.
Labor Day
Sunny, with a high near 86. East wind 7 to 9 mph.
Monday Night
Mostly clear, with a low around 62. East wind 6 to 9 mph.
Tuesday
Sunny, with a high near 93.
Tuesday Night
Mostly clear, with a low around 72.
Wednesday
Sunny and hot, with a high near 96.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 70.
Thursday
Mostly sunny, with a high near 88.
Thursday Night
Partly cloudy, with a low around 62.
Friday
Mostly sunny, with a high near 87.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Bement IL
 39.87°N 88.59°W (Elev. 676 ft)
Last Update:
7:36 pm CDT Sep 4, 2026
Forecast Valid:
8pm CDT Sep 4, 2026-6pm CDT Sep 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