National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Logan County Airport (KAAA)

Lat: 40.16°NLon: 89.34°WElev: 591ft.

Fair

89°F

32°C

Humidity 71%
Wind Speed N 5 mph
Barometer 29.91 in
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index104°F (40°C)
Last update 5 Sep 5:55 pm CDT
Extended Forecast for

Chestnut IL

Extreme Heat Warning September 5, 06:17pm until September 5, 07:00pm
Click here for hazard details and duration
...
  •  
    Extreme Heat Warning September 5, 06:17pm 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 8 to 13 mph, with gusts as high as 18 mph.

    High: 86 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 61. East wind 7 to 11 mph, with gusts as high as 16 mph.

    Low: 61 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 87. East wind 7 to 10 mph.

    High: 87 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 62. East wind 6 to 11 mph, with gusts as high as 15 mph.

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93. South wind 6 to 10 mph.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 72. South wind 8 to 15 mph, with gusts as high as 21 mph.

    Low: 72 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 95.

    High: 95 °F

    Hot

Detailed Forecast

Tonight
Partly cloudy, with a low around 66. Northeast wind 7 to 11 mph, with gusts as high as 18 mph.
Sunday
Sunny, with a high near 86. East northeast wind 8 to 13 mph, with gusts as high as 18 mph.
Sunday Night
Mostly clear, with a low around 61. East wind 7 to 11 mph, with gusts as high as 16 mph.
Labor Day
Sunny, with a high near 87. East wind 7 to 10 mph.
Monday Night
Mostly clear, with a low around 62. East wind 6 to 11 mph, with gusts as high as 15 mph.
Tuesday
Sunny, with a high near 93. South wind 6 to 10 mph.
Tuesday Night
Mostly clear, with a low around 72. South wind 8 to 15 mph, with gusts as high as 21 mph.
Wednesday
Mostly sunny and hot, with a high near 95.
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 60.
Friday
Mostly sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 61.
Saturday
Mostly sunny, with a high near 90.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chestnut IL
 40.05°N 89.19°W (Elev. 623 ft)
Last Update:
5:41 pm CDT Sep 5, 2026
Forecast Valid:
6pm CDT Sep 5, 2026-6pm CDT Sep 12, 2026
 
Forecast Discussion
 
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Additional Resources

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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