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

68°F

20°C

Humidity 84%
Wind Speed SW 6 mph
Barometer 29.98 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 23 Aug 4:35 am CDT
Extended Forecast for

Chillicothe IL

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 84. Light and variable wind becoming northwest 9 to 14 mph in the morning. Winds could gust as high as 22 mph.

    High: 84 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 54. Northwest wind 5 to 9 mph, with gusts as high as 17 mph.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 76. Northwest wind 6 to 13 mph, with gusts as high as 20 mph.

    High: 76 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 50. Northwest wind 3 to 8 mph. Winds could gust as high as 16 mph.

    Low: 50 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 72. Light northwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 16 mph.

    High: 72 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 49. North northwest wind around 6 mph becoming calm in the evening.

    Low: 49 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 73. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 73 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 84. Light and variable wind becoming northwest 9 to 14 mph in the morning. Winds could gust as high as 22 mph.
Tonight
Mostly clear, with a low around 54. Northwest wind 5 to 9 mph, with gusts as high as 17 mph.
Sunday
Sunny, with a high near 76. Northwest wind 6 to 13 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 50. Northwest wind 3 to 8 mph. Winds could gust as high as 16 mph.
Monday
Sunny, with a high near 72. Light northwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 16 mph.
Monday Night
Mostly clear, with a low around 49. North northwest wind around 6 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 73. Calm wind becoming north northwest around 6 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 50.
Wednesday
Sunny, with a high near 76.
Wednesday Night
Partly cloudy, with a low around 54.
Thursday
Mostly sunny, with a high near 81.
Thursday Night
Partly cloudy, with a low around 56.
Friday
Mostly sunny, with a high near 81.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chillicothe IL
 40.94°N 89.51°W (Elev. 499 ft)
Last Update:
4:39 am CDT Aug 23, 2025
Forecast Valid:
4am CDT Aug 23, 2025-6pm CDT Aug 29, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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