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

47°F

8°C

Humidity 94%
Wind Speed NW 8 G 24 mph
Barometer 29.88 in
Dewpoint 45°F (7°C)
Visibility 7.00 mi
Wind Chill43°F (6°C)
Last update 7 Mar 12:35 pm CST
Extended Forecast for

Delavan IL

  • This Afternoon

    This Afternoon: Cloudy, with a temperature falling to around 43 by 5pm. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 61 °F⇓

    Cloudy and
    Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 34. West northwest wind 5 to 13 mph becoming south southwest after midnight. Winds could gust as high as 21 mph.

    Low: 34 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 64. Southwest wind 7 to 15 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 9 to 11 mph, with gusts as high as 23 mph.

    Low: 44 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 73. South southwest wind 9 to 15 mph, with gusts as high as 23 mph.

    High: 73 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 55. South southwest wind 7 to 9 mph, with gusts as high as 18 mph.

    Low: 55 °F

    Mostly Clear

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 79. South wind 7 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 79 °F

    Mostly Sunny
    then Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 43. Chance of precipitation is 100%.

    Low: 43 °F

    Showers

  • Wednesday

    Wednesday: Showers, mainly before noon. High near 60. Chance of precipitation is 90%.

    High: 60 °F

    Showers then
    Chance
    Showers

Detailed Forecast

This Afternoon
Cloudy, with a temperature falling to around 43 by 5pm. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tonight
Mostly cloudy, with a low around 34. West northwest wind 5 to 13 mph becoming south southwest after midnight. Winds could gust as high as 21 mph.
Sunday
Sunny, with a high near 64. Southwest wind 7 to 15 mph, with gusts as high as 24 mph.
Sunday Night
Clear, with a low around 44. South southwest wind 9 to 11 mph, with gusts as high as 23 mph.
Monday
Sunny, with a high near 73. South southwest wind 9 to 15 mph, with gusts as high as 23 mph.
Monday Night
Mostly clear, with a low around 55. South southwest wind 7 to 9 mph, with gusts as high as 18 mph.
Tuesday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 79. South wind 7 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
Showers and possibly a thunderstorm. Low around 43. Chance of precipitation is 100%.
Wednesday
Showers, mainly before noon. High near 60. Chance of precipitation is 90%.
Wednesday Night
Partly cloudy, with a low around 27.
Thursday
Mostly sunny, with a high near 49.
Thursday Night
Mostly cloudy, with a low around 39.
Friday
Mostly cloudy, with a high near 62. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Delavan IL
 40.37°N 89.52°W (Elev. 600 ft)
Last Update:
12:26 pm CST Mar 7, 2026
Forecast Valid:
12pm CST Mar 7, 2026-6pm CDT Mar 13, 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