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

Marshall Memorial Municipal Airport (KMHL)

Lat: 39.1°NLon: 93.2°WElev: 779ft.

Fog

64°F

18°C

Humidity 100%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 64°F (18°C)
Visibility 0.50 mi
Last update 20 Aug 6:15 am CDT
Extended Forecast for

Dover MO

Dense Fog Advisory August 20, 06:37am until August 20, 10:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory August 20, 06:37am until August 20, 10:00am

    NOW until 10:00am Thu

    Dense Fog Advisory

  • Today

    High: 81 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 87. Light south southwest wind.

    High: 87 °F

    Sunny

  • Friday Night

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

    Low: 67 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 85. Light northeast wind. Chance of precipitation is 20%.

    High: 85 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 81.

    High: 81 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of showers after 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 30%.

    Low: 65 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Today
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 81. Light north northeast wind.
Tonight
Mostly clear, with a low around 66. Calm wind.
Friday
Sunny, with a high near 87. Light south southwest wind.
Friday Night
A slight chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 67. Calm wind. Chance of precipitation is 20%.
Saturday
A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 85. Light northeast wind. Chance of precipitation is 20%.
Saturday Night
Mostly clear, with a low around 63.
Sunday
Partly sunny, with a high near 81.
Sunday Night
A chance of showers after 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 30%.
Monday
A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 84. Chance of precipitation is 30%.
Monday Night
Mostly clear, with a low around 66.
Tuesday
Mostly sunny, with a high near 86.
Tuesday Night
Partly cloudy, with a low around 68.
Wednesday
Mostly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Dover MO
 39.19°N 93.69°W (Elev. 797 ft)
Last Update:
5:46 am CDT Aug 20, 2026
Forecast Valid:
6am CDT Aug 20, 2026-6pm CDT Aug 26, 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