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

Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Hazardous Weather Conditions

Current conditions at

Columbia, Columbia Regional Airport (KCOU)

Lat: 38.82°NLon: 92.22°WElev: 889ft.

Fair

71°F

22°C

Humidity 100%
Wind Speed NW 5 mph
Barometer 29.94 in (1013.2 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 19 Aug 11:54 pm CDT
Extended Forecast for

5 Miles NNW Harrisburg MO

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 81. Calm wind becoming northeast around 5 mph in the morning.

    High: 81 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 65. Light and variable wind.

    Low: 65 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly sunny, with a high near 86. Light and variable wind.

    High: 86 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 67. Calm wind. Chance of precipitation is 20%.

    Low: 67 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 66.

    Low: 66 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 67. Calm wind.
Thursday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 81. Calm wind becoming northeast around 5 mph in the morning.
Thursday Night
Increasing clouds, with a low around 65. Light and variable wind.
Friday
Mostly sunny, with a high near 86. Light and variable wind.
Friday Night
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 67. Calm wind. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
Mostly clear, with a low around 65.
Sunday
Mostly sunny, with a high near 82.
Sunday Night
Mostly cloudy, with a low around 66.
Monday
Mostly sunny, with a high near 84.
Monday Night
Mostly clear, with a low around 67.
Tuesday
Mostly sunny, with a high near 87.
Tuesday Night
Partly cloudy, with a low around 68.
Wednesday
Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NNW Harrisburg MO
 39.2°N 92.52°W (Elev. 771 ft)
Last Update:
11:47 pm CDT Aug 19, 2026
Forecast Valid:
11pm CDT Aug 19, 2026-6pm CDT Aug 26, 2026
 
Forecast Discussion
 
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Additional Resources

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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