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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Delavan IL

  • Overnight

    Overnight: A 30 percent chance of showers, mainly between 4am and 5am. Mostly cloudy, with a low around 63. Light west wind.

    Low: 63 °F

    Chance
    Showers

  • Saturday

    Saturday: A 10 percent chance of showers before 7am. Sunny, with a high near 81. West northwest wind 3 to 7 mph.

    High: 81 °F

    Slight Chance
    Showers then
    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 59. Northwest wind around 5 mph becoming calm.

    Low: 59 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Showers, with thunderstorms also possible after 10am. Some of the storms could produce heavy rainfall. High near 72. East southeast wind 7 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    High: 72 °F

    Heavy Rain

  • Sunday Night

    Sunday Night: Showers, mainly before 1am. The rain could be heavy at times. Low around 58. North northeast wind 11 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 58 °F

    Heavy Rain

  • Monday

    Monday: Partly sunny, with a high near 75. North northeast wind 9 to 13 mph, with gusts as high as 21 mph.

    High: 75 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 54. Northeast wind 3 to 7 mph.

    Low: 54 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 30 percent chance of showers, mainly between 4am and 5am. Mostly cloudy, with a low around 63. Light west wind.
Saturday
A 10 percent chance of showers before 7am. Sunny, with a high near 81. West northwest wind 3 to 7 mph.
Saturday Night
Increasing clouds, with a low around 59. Northwest wind around 5 mph becoming calm.
Sunday
Showers, with thunderstorms also possible after 10am. Some of the storms could produce heavy rainfall. High near 72. East southeast wind 7 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Sunday Night
Showers, mainly before 1am. The rain could be heavy at times. Low around 58. North northeast wind 11 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Monday
Partly sunny, with a high near 75. North northeast wind 9 to 13 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 54. Northeast wind 3 to 7 mph.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Partly cloudy, with a low around 58.
Thursday
Mostly sunny, with a high near 78.
Thursday Night
Partly cloudy, with a low around 58.
Friday
Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Delavan IL
 40.39°N 89.52°W (Elev. 659 ft)
Last Update:
1:26 am CDT Jun 20, 2026
Forecast Valid:
1am CDT Jun 20, 2026-6pm CDT Jun 26, 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