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

19°F

-7°C

Humidity 52%
Wind Speed NW 13 G 18 mph
Barometer 30.48 in
Dewpoint 4°F (-16°C)
Visibility 10.00 mi
Wind Chill6°F (-14°C)
Last update 22 Feb 7:35 pm CST
Extended Forecast for

Delavan IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 12. Wind chill values between zero and 5. North northwest wind 11 to 17 mph, with gusts as high as 26 mph.

    Low: 12 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, then gradually becoming sunny, with a high near 30. Wind chill values between -3 and 7. North northwest wind 6 to 15 mph, with gusts as high as 23 mph.

    High: 30 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 18. Calm wind becoming south 5 to 9 mph after midnight. Winds could gust as high as 17 mph.

    Low: 18 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 47. South wind 10 to 17 mph, with gusts as high as 29 mph.

    High: 47 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 26. West northwest wind 6 to 10 mph, with gusts as high as 21 mph.

    Low: 26 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Mostly sunny, with a high near 45. West northwest wind 6 to 8 mph becoming northeast in the afternoon.

    High: 45 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Rain and snow likely. Mostly cloudy, with a low around 27. East wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 27 °F

    Rain/Snow
    Likely

  • Thursday

    Thursday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 24.

    Low: 24 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 12. Wind chill values between zero and 5. North northwest wind 11 to 17 mph, with gusts as high as 26 mph.
Monday
Partly sunny, then gradually becoming sunny, with a high near 30. Wind chill values between -3 and 7. North northwest wind 6 to 15 mph, with gusts as high as 23 mph.
Monday Night
Increasing clouds, with a low around 18. Calm wind becoming south 5 to 9 mph after midnight. Winds could gust as high as 17 mph.
Tuesday
Mostly cloudy, with a high near 47. South wind 10 to 17 mph, with gusts as high as 29 mph.
Tuesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 26. West northwest wind 6 to 10 mph, with gusts as high as 21 mph.
Wednesday
Mostly sunny, with a high near 45. West northwest wind 6 to 8 mph becoming northeast in the afternoon.
Wednesday Night
Rain and snow likely. Mostly cloudy, with a low around 27. East wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Mostly sunny, with a high near 42.
Thursday Night
Mostly clear, with a low around 24.
Friday
Sunny, with a high near 57.
Friday Night
Mostly clear, with a low around 35.
Saturday
Mostly sunny, with a high near 55.
Saturday Night
Partly cloudy, with a low around 25.
Sunday
Partly sunny, with a high near 42.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Delavan IL
 40.37°N 89.55°W (Elev. 600 ft)
Last Update:
7:16 pm CST Feb 22, 2026
Forecast Valid:
7pm CST Feb 22, 2026-6pm CST Mar 1, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation