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

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Sunday could bring areas of flooding to parts of the upper Midwest, central Great Lakes, southern New England and Virginia/North Carolina tidewater region. Read More >

Hazardous Weather Conditions

Current conditions at

Columbia, Columbia Regional Airport (KCOU)

Lat: 38.82°NLon: 92.22°WElev: 889ft.

Fair

90°F

32°C

Humidity 54%
Wind Speed Calm
Barometer 30.16 in (1020.2 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 17 Sep 6:54 pm CDT
Extended Forecast for

Clarksburg MO

Heat Advisory September 17, 07:48pm until September 19, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 17, 07:48pm until September 19, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Tonight

    Low: 72 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 97. Heat index values as high as 104. Light and variable wind becoming south around 6 mph in the morning.

    High: 97 °F

    Hot

  • Friday Night

    Friday Night: Increasing clouds, with a low around 73. South wind 5 to 7 mph.

    Low: 73 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly sunny and hot, with a high near 97. Heat index values as high as 101. Southwest wind 5 to 7 mph.

    High: 97 °F

    Hot

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 91. Chance of precipitation is 30%.

    High: 91 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 67. Chance of precipitation is 70%.

    Low: 67 °F

    Showers
    Likely

  • Monday

    Monday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.

    High: 80 °F

    Showers
    Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 72. Light and variable wind.
Friday
Sunny and hot, with a high near 97. Heat index values as high as 104. Light and variable wind becoming south around 6 mph in the morning.
Friday Night
Increasing clouds, with a low around 73. South wind 5 to 7 mph.
Saturday
Mostly sunny and hot, with a high near 97. Heat index values as high as 101. Southwest wind 5 to 7 mph.
Saturday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 72. Calm wind.
Sunday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 91. Chance of precipitation is 30%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 67. Chance of precipitation is 70%.
Monday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.
Monday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 61.
Tuesday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 74.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Mostly sunny, with a high near 77.
Wednesday Night
Partly cloudy, with a low around 60.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Clarksburg MO
 38.67°N 92.67°W (Elev. 830 ft)
Last Update:
6:06 pm CDT Sep 17, 2026
Forecast Valid:
7pm CDT Sep 17, 2026-6pm CDT Sep 24, 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