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.

Rain

74°F

23°C

Humidity 100%
Wind Speed N 3 mph
Barometer 30.09 in
Dewpoint 74°F (23°C)
Visibility 7.00 mi
Last update 15 Aug 4:35 am CDT
Extended Forecast for

Delavan IL

Flood Watch until August 15, 10:00am
Flash Flood Warning August 15, 04:50am until August 15, 08:00am
Click here for hazard details and duration
Flood Watch
Flash Flood Warning
  •  
    Flood Watch until August 15, 10:00am
    Flash Flood Warning August 15, 04:50am until August 15, 08:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 71 °F

    Showers

  • Saturday

    Saturday: Showers and thunderstorms, mainly before 11am. High near 87. South southwest wind around 8 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 87 °F

    Showers then
    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 73. West southwest wind around 5 mph becoming light and variable.

    Low: 73 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Sunday

    Sunday: A 30 percent chance of showers between 1pm and 2pm. Partly sunny, with a high near 87. West northwest wind 6 to 9 mph, with gusts as high as 15 mph.

    High: 87 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 67. North northwest wind 3 to 8 mph. Winds could gust as high as 15 mph.

    Low: 67 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 83. North wind around 5 mph.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 63. Light and variable wind.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Low around 71. East southeast wind around 8 mph, with gusts as high as 16 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Showers and thunderstorms, mainly before 11am. High near 87. South southwest wind around 8 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 73. West southwest wind around 5 mph becoming light and variable.
Sunday
A 30 percent chance of showers between 1pm and 2pm. Partly sunny, with a high near 87. West northwest wind 6 to 9 mph, with gusts as high as 15 mph.
Sunday Night
Partly cloudy, with a low around 67. North northwest wind 3 to 8 mph. Winds could gust as high as 15 mph.
Monday
Sunny, with a high near 83. North wind around 5 mph.
Monday Night
Mostly clear, with a low around 63. Light and variable wind.
Tuesday
Sunny, with a high near 84.
Tuesday Night
A 50 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70.
Wednesday
A 40 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 83.
Wednesday Night
Partly cloudy, with a low around 62.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Partly cloudy, with a low around 59.
Friday
Mostly sunny, with a high near 77.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Delavan IL
 40.37°N 89.55°W (Elev. 600 ft)
Last Update:
4:36 am CDT Aug 15, 2026
Forecast Valid:
4am CDT Aug 15, 2026-6pm CDT Aug 21, 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