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

Marshall County Airport (KC75)

Lat: 41.02°NLon: 89.39°WElev: 545ft.

Fair

84°F

29°C

Humidity 47%
Wind Speed S 5 mph
Barometer 30.03 in
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 3 Jul 11:55 am CDT
Extended Forecast for

Chillicothe IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 90. Light southwest wind.

    High: 90 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 71. Light south wind.

    Low: 71 °F

    Mostly Clear

  • Independence Day

    Independence Day: Sunny, with a high near 92. South southwest wind 3 to 7 mph.

    High: 92 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 72. South wind 3 to 5 mph.

    Low: 72 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 92. South wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 92 °F

    Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72. Southwest wind 5 to 7 mph, with gusts as high as 16 mph.

    Low: 72 °F

    Partly Cloudy
    then Chance
    T-storms

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86. West northwest wind 6 to 8 mph, with gusts as high as 15 mph.

    High: 86 °F

    Partly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 90. Light southwest wind.
Tonight
Mostly clear, with a low around 71. Light south wind.
Independence Day
Sunny, with a high near 92. South southwest wind 3 to 7 mph.
Friday Night
Mostly clear, with a low around 72. South wind 3 to 5 mph.
Saturday
Sunny, with a high near 92. South wind 6 to 10 mph, with gusts as high as 18 mph.
Saturday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72. Southwest wind 5 to 7 mph, with gusts as high as 16 mph.
Sunday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86. West northwest wind 6 to 8 mph, with gusts as high as 15 mph.
Sunday Night
Partly cloudy, with a low around 68.
Monday
Mostly sunny, with a high near 85.
Monday Night
Partly cloudy, with a low around 67.
Tuesday
Mostly sunny, with a high near 87.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chillicothe IL
 40.91°N 89.49°W (Elev. 472 ft)
Last Update:
10:41 am CDT Jul 3, 2025
Forecast Valid:
12pm CDT Jul 3, 2025-6pm CDT Jul 9, 2025
 
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