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

Hazardous Weather Conditions

Current conditions at

Marshall County Airport (KC75)

Lat: 41.02°NLon: 89.39°WElev: 545ft.

Fair

81°F

27°C

Humidity 72%
Wind Speed SW 5 mph
Barometer 29.97 in
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 2 Sep 9:15 am CDT
Extended Forecast for

Kewanee IL

Extreme Heat Warning until September 4, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning until September 4, 07:00pm

    NOW until 7:00pm Fri

    Extreme Heat Warning

  • Today

    High: 93 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 76. South wind 5 to 10 mph.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers and thunderstorms between 1pm and 3pm. Sunny, with a high near 92. Heat index values as high as 100. Southwest wind 5 to 10 mph. Chance of precipitation is 10%.

    High: 92 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 74. Southeast wind around 5 mph.

    Low: 74 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

Detailed Forecast

Today
Sunny, with a high near 93. Heat index values as high as 100. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 76. South wind 5 to 10 mph.
Thursday
A slight chance of showers and thunderstorms between 1pm and 3pm. Sunny, with a high near 92. Heat index values as high as 100. Southwest wind 5 to 10 mph. Chance of precipitation is 10%.
Thursday Night
Mostly clear, with a low around 74. Southeast wind around 5 mph.
Friday
Mostly sunny, with a high near 91.
Friday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72.
Saturday
Mostly sunny, with a high near 89.
Saturday Night
Partly cloudy, with a low around 70.
Sunday
Mostly sunny, with a high near 85.
Sunday Night
Partly cloudy, with a low around 67.
Labor Day
Mostly sunny, with a high near 83.
Monday Night
Partly cloudy, with a low around 66.
Tuesday
Mostly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Kewanee IL
 41.26°N 89.93°W (Elev. 801 ft)
Last Update:
9:07 am CDT Sep 2, 2026
Forecast Valid:
9am CDT Sep 2, 2026-6pm CDT Sep 8, 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