Heavy to Excessive Rains in The Four Corners Region and Midwest; Heat Persists in the South-Central U.S.

Repeated rounds of showers and thunderstorms could bring a flash flooding threat across the Four Corners region and from the mid-Mississippi Valley into the lower Great Lakes. Hot temperatures and high humidity will continue to challenge daily records from the Southern Plains to the lower Mississippi Valley. Read More >

Hazardous Weather Conditions

Current conditions at

Marshall Memorial Municipal Airport (KMHL)

Lat: 39.1°NLon: 93.2°WElev: 779ft.

Fair

86°F

30°C

Humidity 70%
Wind Speed E 3 mph
Barometer 30.18 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 16 Sep 6:55 pm CDT
Extended Forecast for

Armstrong MO

  • Tonight

    Tonight: Mostly clear, with a low around 71. Light and variable wind becoming east southeast around 6 mph in the evening.

    Low: 71 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 93. Heat index values as high as 102. South wind 5 to 7 mph becoming west in the afternoon.

    High: 93 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 71. Calm wind becoming east around 5 mph after midnight.

    Low: 71 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 94. Heat index values as high as 101. East southeast wind 5 to 8 mph becoming south southwest in the afternoon.

    High: 94 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 72. Calm wind becoming south 5 to 7 mph in the evening.

    Low: 72 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 93.

    High: 93 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 68. Chance of precipitation is 60%.

    Low: 68 °F

    Chance
    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: A chance of showers.  Partly sunny, with a high near 84. Chance of precipitation is 40%.

    High: 84 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely after 1am.  Mostly cloudy, with a low around 65. Chance of precipitation is 60%.

    Low: 65 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 71. Light and variable wind becoming east southeast around 6 mph in the evening.
Thursday
Mostly sunny, with a high near 93. Heat index values as high as 102. South wind 5 to 7 mph becoming west in the afternoon.
Thursday Night
Mostly clear, with a low around 71. Calm wind becoming east around 5 mph after midnight.
Friday
Sunny, with a high near 94. Heat index values as high as 101. East southeast wind 5 to 8 mph becoming south southwest in the afternoon.
Friday Night
Mostly clear, with a low around 72. Calm wind becoming south 5 to 7 mph in the evening.
Saturday
Mostly sunny, with a high near 93.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Sunday
A chance of showers. Partly sunny, with a high near 84. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms, then showers likely after 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Monday
A chance of showers. Mostly cloudy, with a high near 78. Chance of precipitation is 40%.
Monday Night
Partly cloudy, with a low around 61.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
Mostly sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
Armstrong MO
 39.27°N 92.69°W (Elev. 801 ft)
3:36 pm CDT Sep 16, 2026
7pm CDT Sep 16, 2026-6pm CDT Sep 23, 2026
 
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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