Heavy to Excessive Rains in The Four Corners Region and Midwest; Heat Persists in the South-Central U.S.

Repeated rounds of showers and thunderstorms could bring a flash flooding threat across the Four Corners region and from the mid-Mississippi Valley into the lower Great Lakes. Hot temperatures and high humidity will continue to challenge daily records from the Southern Plains to the lower Mississippi Valley. Read More >

Hazardous Weather Conditions

Current conditions at

Marshall County Airport (KC75)

Lat: 41.02°NLon: 89.39°WElev: 545ft.

Overcast

75°F

24°C

Humidity 85%
Wind Speed Calm
Barometer 30.23 in
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 16 Sep 5:15 pm CDT
Extended Forecast for

Chillicothe IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 78. Light northeast wind.

    High: 78 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly after 4am.  Mostly cloudy, with a low around 68. Light northeast wind.  Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 68 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Thursday

    Thursday: Showers and thunderstorms before 11am, then a slight chance of showers between 11am and noon. Some of the storms could produce heavy rainfall.  High near 83. Light and variable wind.  Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 83 °F

    Heavy Rain
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 66. Light northeast wind.

    Low: 66 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers before 1pm.  Partly sunny, with a high near 83. East northeast wind around 6 mph.

    High: 83 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 70. East wind 6 to 8 mph becoming south after midnight. Winds could gust as high as 15 mph.

    Low: 70 °F

    Partly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers after 1pm.  Partly sunny, with a high near 88. Southwest wind around 9 mph, with gusts as high as 18 mph.

    High: 88 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 68. Chance of precipitation is 70%.

    Low: 68 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 1pm.  Mostly cloudy, with a high near 77. Chance of precipitation is 50%.

    High: 77 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 78. Light northeast wind.
Tonight
Showers and thunderstorms likely, mainly after 4am. Mostly cloudy, with a low around 68. Light northeast wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Showers and thunderstorms before 11am, then a slight chance of showers between 11am and noon. Some of the storms could produce heavy rainfall. High near 83. Light and variable wind. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday Night
Mostly cloudy, with a low around 66. Light northeast wind.
Friday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 83. East northeast wind around 6 mph.
Friday Night
Partly cloudy, with a low around 70. East wind 6 to 8 mph becoming south after midnight. Winds could gust as high as 15 mph.
Saturday
A 40 percent chance of showers after 1pm. Partly sunny, with a high near 88. Southwest wind around 9 mph, with gusts as high as 18 mph.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 68. Chance of precipitation is 70%.
Sunday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 77. Chance of precipitation is 50%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.
Monday
A chance of showers. Mostly cloudy, with a high near 75.
Monday Night
A chance of showers. Mostly cloudy, with a low around 60.
Tuesday
Partly sunny, with a high near 73.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
Mostly sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
Chillicothe IL
 40.91°N 89.49°W (Elev. 472 ft)
4:16 pm CDT Sep 16, 2026
5pm CDT Sep 16, 2026-6pm CDT Sep 23, 2026
 
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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