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.

Partly Cloudy

65°F

18°C

Humidity 91%
Wind Speed N 6 mph
Barometer 29.80 in
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 2 Aug 1:55 am CDT
Extended Forecast for

Chillicothe IL

  • Overnight

    Overnight: Partly cloudy, with a low around 65. North wind around 9 mph, with gusts as high as 18 mph.

    Low: 65 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 81. North wind 9 to 11 mph, with gusts as high as 21 mph.

    High: 81 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 61. North wind 3 to 7 mph. Winds could gust as high as 15 mph.

    Low: 61 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 83. Light east northeast wind.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 62. Calm wind.

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 84. Calm wind.

    High: 84 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 65. Calm wind.

    Low: 65 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Chance of precipitation is 70%.

    Low: 64 °F

    Showers
    Likely

Detailed Forecast

Overnight
Partly cloudy, with a low around 65. North wind around 9 mph, with gusts as high as 18 mph.
Sunday
Mostly sunny, with a high near 81. North wind 9 to 11 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 61. North wind 3 to 7 mph. Winds could gust as high as 15 mph.
Monday
Sunny, with a high near 83. Light east northeast wind.
Monday Night
Mostly clear, with a low around 62. Calm wind.
Tuesday
Sunny, with a high near 84. Calm wind.
Tuesday Night
Partly cloudy, with a low around 65. Calm wind.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Chance of precipitation is 70%.
Thursday
A 50 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 81.
Thursday Night
A chance of showers. Partly cloudy, with a low around 65.
Friday
Partly sunny, with a high near 84.
Friday Night
Partly cloudy, with a low around 66.
Saturday
Partly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chillicothe IL
 40.94°N 89.51°W (Elev. 499 ft)
Last Update:
1:26 am CDT Aug 2, 2026
Forecast Valid:
2am CDT Aug 2, 2026-6pm CDT Aug 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