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

92°F

33°C

Humidity 58%
Wind Speed N 10 mph
Barometer 29.90 in (1011.9 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index103°F (39°C)
Last update 5 Sep 4:54 pm CDT
Extended Forecast for

Mount Zion IL

Extreme Heat Warning September 5, 05:53pm until September 5, 07:00pm
Click here for hazard details and duration
...
  •  
    Extreme Heat Warning September 5, 05:53pm until September 5, 07:00pm

    NOW until 7:00pm Sat

    Extreme Heat Warning

  • Tonight

    Low: 66 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 86. East northeast wind 9 to 13 mph, with gusts as high as 18 mph.

    High: 86 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 60. East northeast wind 6 to 10 mph, with gusts as high as 15 mph.

    Low: 60 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 87. East wind 6 to 9 mph.

    High: 87 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 61. East wind 5 to 8 mph.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93. South wind 5 to 9 mph.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 71. South wind 7 to 14 mph, with gusts as high as 20 mph.

    Low: 71 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

Detailed Forecast

Tonight
Partly cloudy, with a low around 66. Northeast wind 7 to 11 mph, with gusts as high as 16 mph.
Sunday
Sunny, with a high near 86. East northeast wind 9 to 13 mph, with gusts as high as 18 mph.
Sunday Night
Mostly clear, with a low around 60. East northeast wind 6 to 10 mph, with gusts as high as 15 mph.
Labor Day
Sunny, with a high near 87. East wind 6 to 9 mph.
Monday Night
Mostly clear, with a low around 61. East wind 5 to 8 mph.
Tuesday
Sunny, with a high near 93. South wind 5 to 9 mph.
Tuesday Night
Mostly clear, with a low around 71. South wind 7 to 14 mph, with gusts as high as 20 mph.
Wednesday
Sunny and hot, with a high near 97.
Wednesday Night
A 40 percent chance of showers after 1am. Partly cloudy, with a low around 67.
Thursday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 84.
Thursday Night
Partly cloudy, with a low around 59.
Friday
Mostly sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 61.
Saturday
Sunny, with a high near 90.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Zion IL
 39.77°N 88.89°W (Elev. 650 ft)
Last Update:
5:41 pm CDT Sep 5, 2026
Forecast Valid:
5pm CDT Sep 5, 2026-6pm CDT Sep 12, 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