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

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 >

Hazardous Weather Conditions

Current conditions at

Marshall Memorial Municipal Airport (KMHL)

Lat: 39.1°NLon: 93.2°WElev: 779ft.

Fair

73°F

23°C

Humidity 89%
Wind Speed Calm
Barometer 29.95 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 19 Sep 4:35 am CDT
Extended Forecast for

Brunswick MO

  • Today

    Today: Mostly sunny, with a high near 94. Heat index values as high as 99. Southwest wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 94 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 3am, then a chance of showers and thunderstorms after 3am. Increasing clouds, with a low around 68. West wind 5 to 7 mph becoming calm after midnight. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Chance
    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: A chance of showers and thunderstorms, mainly after 2pm. Mostly cloudy, with a high near 81. Calm wind becoming north 5 to 7 mph in the morning. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 61. North northeast wind 6 to 9 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 61 °F

    Showers

  • Monday

    Monday: A chance of showers and thunderstorms. Cloudy, with a high near 69. North northeast wind 8 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 69 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 66.

    High: 66 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 94. Heat index values as high as 99. Southwest wind 6 to 11 mph, with gusts as high as 20 mph.
Tonight
A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 3am, then a chance of showers and thunderstorms after 3am. Increasing clouds, with a low around 68. West wind 5 to 7 mph becoming calm after midnight. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers and thunderstorms, mainly after 2pm. Mostly cloudy, with a high near 81. Calm wind becoming north 5 to 7 mph in the morning. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers and possibly a thunderstorm. Low around 61. North northeast wind 6 to 9 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday
A chance of showers and thunderstorms. Cloudy, with a high near 69. North northeast wind 8 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
Mostly cloudy, with a low around 55.
Tuesday
Mostly cloudy, with a high near 66.
Tuesday Night
Partly cloudy, with a low around 49.
Wednesday
Mostly sunny, with a high near 70.
Wednesday Night
Partly cloudy, with a low around 52.
Thursday
Partly sunny, with a high near 73.
Thursday Night
Mostly cloudy, with a low around 56.
Friday
Partly sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Brunswick MO
 39.43°N 93.11°W (Elev. 699 ft)
Last Update:
1:26 am CDT Sep 19, 2026
Forecast Valid:
4am CDT Sep 19, 2026-6pm CDT Sep 25, 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