Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Jefferson City, Jefferson City Memorial Airport (KJEF)

Lat: 38.59°NLon: 92.16°WElev: 548ft.

Fair

91°F

33°C

Humidity 54%
Wind Speed Vrbl 5 mph
Barometer 30.13 in (1018.7 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 18 Sep 11:53 am CDT
Extended Forecast for

Holts Summit MO

Heat Advisory September 18, 12:43pm until September 18, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 18, 12:43pm until September 18, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • This Afternoon

    High: 95 °F

    Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 73. Calm wind becoming south around 5 mph after midnight.

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: Increasing clouds and hot, with a high near 97. Southwest wind 5 to 8 mph.

    High: 97 °F

    Hot

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 71. Southwest wind 3 to 5 mph.

    Low: 71 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 4pm.  Partly sunny, with a high near 89. West wind 3 to 5 mph.  Chance of precipitation is 30%.

    High: 89 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 66. Chance of precipitation is 70%.

    Low: 66 °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 77. Chance of precipitation is 60%.

    High: 77 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A 20 percent chance of showers before 1am.  Mostly cloudy, with a low around 59.

    Low: 59 °F

    Slight Chance
    Showers

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Sunny, with a high near 95. Heat index values as high as 104. Light southwest wind.
Tonight
Mostly clear, with a low around 73. Calm wind becoming south around 5 mph after midnight.
Saturday
Increasing clouds and hot, with a high near 97. Southwest wind 5 to 8 mph.
Saturday Night
Partly cloudy, with a low around 71. Southwest wind 3 to 5 mph.
Sunday
A chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 89. West wind 3 to 5 mph. Chance of precipitation is 30%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. 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 77. Chance of precipitation is 60%.
Monday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 59.
Tuesday
Partly sunny, with a high near 70.
Tuesday Night
Mostly cloudy, with a low around 54.
Wednesday
Mostly sunny, with a high near 73.
Wednesday Night
Partly cloudy, with a low around 54.
Thursday
Mostly sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
Holts Summit MO
 38.64°N 92.11°W (Elev. 699 ft)
10:41 am CDT Sep 18, 2026
12pm CDT Sep 18, 2026-6pm CDT Sep 24, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database