Heat Persists in the South Central U.S. and California; Heavy Rain in the Ohio Valley

Sweltering heat remains across the South-Central Plains and Lower/Middle Mississippi Valley, as well as in the Southwest and California this week with limited nighttime relief. Heavy rainfall will lead to localized areas of flash flooding in parts of the Ohio Valley/Central Appalachians. Dry and breezy conditions will enhance fire weather concerns across the northern Rockies and High Plains. Read More >

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Fair

62°F

17°C

Humidity 96%
Wind Speed W 3 mph
Barometer 30.03 in (1016.6 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 9 Sep 11:53 pm CDT
Extended Forecast for

Marshalltown IA

  • Overnight

    Overnight: Partly cloudy, with a low around 58. Northwest wind around 5 mph becoming calm.

    Low: 58 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 80. Calm wind.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 57. Calm wind becoming south southeast around 5 mph after midnight.

    Low: 57 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 81. South wind 5 to 11 mph, with gusts as high as 18 mph.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am.  Partly cloudy, with a low around 64. South southeast wind 8 to 10 mph.  Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Mostly Clear
    then Chance
    Showers

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly before 1pm.  Partly sunny, with a high near 79. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 57.

    Low: 57 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms.  Partly sunny, with a high near 77.

    High: 77 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 64.

    Low: 64 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Partly cloudy, with a low around 58. Northwest wind around 5 mph becoming calm.
Thursday
Sunny, with a high near 80. Calm wind.
Thursday Night
Clear, with a low around 57. Calm wind becoming south southeast around 5 mph after midnight.
Friday
Sunny, with a high near 81. South wind 5 to 11 mph, with gusts as high as 18 mph.
Friday Night
A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 64. South southeast wind 8 to 10 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 79. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 57.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 77.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Monday
Showers likely, with thunderstorms also possible after 1pm. Partly sunny, with a high near 85. Breezy. Chance of precipitation is 60%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.
Tuesday
Mostly cloudy, with a high near 73.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 56.
Wednesday
A 40 percent chance of showers. Partly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
Marshalltown IA
 42.04°N 92.92°W
10:47 pm CDT Sep 9, 2026
12am CDT Sep 10, 2026-6pm CDT Sep 16, 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