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

Logan County Airport (KAAA)

Lat: 40.16°NLon: 89.34°WElev: 591ft.

Overcast

41°F

5°C

Humidity 70%
Wind Speed W 6 mph
Barometer 30.03 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 7 Mar 11:15 pm CDT
Extended Forecast for

Chestnut IL

  • Tonight

    Tonight: Partly cloudy, with a low around 35. West northwest wind 6 to 9 mph becoming southwest after midnight. Winds could gust as high as 16 mph.

    Low: 35 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 64. Southwest wind 8 to 17 mph, with gusts as high as 24 mph.

    High: 64 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 44. South southwest wind 11 to 13 mph, with gusts as high as 22 mph.

    Low: 44 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 73. South southwest wind 11 to 17 mph, with gusts as high as 24 mph.

    High: 73 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 57. South southwest wind around 11 mph, with gusts as high as 21 mph.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm after noon. Increasing clouds, with a high near 79. South wind 10 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Mostly Sunny
    then Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 47. Breezy, with a south southwest wind 16 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    Low: 47 °F

    Showers and
    Breezy

  • Wednesday

    Wednesday: Showers. High near 63. Breezy. Chance of precipitation is 90%.

    High: 63 °F

    Breezy.
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 35. West northwest wind 6 to 9 mph becoming southwest after midnight. Winds could gust as high as 16 mph.
Sunday
Sunny, with a high near 64. Southwest wind 8 to 17 mph, with gusts as high as 24 mph.
Sunday Night
Clear, with a low around 44. South southwest wind 11 to 13 mph, with gusts as high as 22 mph.
Monday
Sunny, with a high near 73. South southwest wind 11 to 17 mph, with gusts as high as 24 mph.
Monday Night
Mostly clear, with a low around 57. South southwest wind around 11 mph, with gusts as high as 21 mph.
Tuesday
Showers likely and possibly a thunderstorm after noon. Increasing clouds, with a high near 79. South wind 10 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers and possibly a thunderstorm. Low around 47. Breezy, with a south southwest wind 16 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Wednesday
Showers. High near 63. Breezy. Chance of precipitation is 90%.
Wednesday Night
Partly cloudy, with a low around 29.
Thursday
Mostly sunny, with a high near 49.
Thursday Night
Mostly cloudy, with a low around 39. Breezy.
Friday
Mostly cloudy, with a high near 62. Breezy.
Friday Night
Mostly cloudy, with a low around 33.
Saturday
Mostly cloudy, with a high near 49.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chestnut IL
 40.07°N 89.19°W (Elev. 600 ft)
Last Update:
9:36 pm CST Mar 7, 2026
Forecast Valid:
10pm CST Mar 7, 2026-6pm CDT Mar 14, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation