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

Dangerous Heat to Continue through the Holiday Weekend; Severe Storms on Friday from the Plains to the Mid-Atlantic

Dangerous, record-breaking heat will continue across most of the central and eastern U.S through Friday then focusing across the eastern U.S. through the Independence Day holiday weekend. Peak heat indices of up to 115 degrees are possible. Isolated to scattered severe thunderstorms are possible from the northern/central Plains into the Midwest, Ohio Valley, and Mid-Atlantic Friday. Read More >

Hazardous Weather Conditions

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Thunderstorm in Vicinity and Breezy

66°F

19°C

Humidity 93%
Wind Speed NW 22 G 32 mph
Barometer 30.07 in (1017.9 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 3 Jul 6:53 am CDT
Extended Forecast for

Marshalltown Municipal Airport IA

Flood Watch July 3, 07:18am until July 3, 10:00am
Click here for hazard details and duration
...
  •  
    Flood Watch July 3, 07:18am until July 3, 10:00am

    NOW until 10:00am Fri

    Flood Watch

  • Today

    High: 88 °F

    Showers then
    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers and thunderstorms likely after 4am. Some of the storms could produce heavy rainfall. Increasing clouds, with a low around 68. South wind 5 to 7 mph becoming west northwest after midnight. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 68 °F

    Chance
    T-storms then
    Heavy Rain

  • Independence Day

    Independence Day: A 40 percent chance of showers and thunderstorms, mainly between 2pm and 3pm. Cloudy, then gradually becoming mostly sunny, with a high near 86. South southeast wind around 6 mph becoming west northwest in the afternoon. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms between 7pm and 1am, then a slight chance of showers after 1am. Partly cloudy, with a low around 65. Northwest wind 3 to 5 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83. North northwest wind 5 to 7 mph.

    High: 83 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

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

    Low: 63 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Monday Night

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

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Today
Showers and possibly a thunderstorm before 10am, then a chance of showers and thunderstorms, mainly between 10am and 4pm. High near 88. South southwest wind around 8 mph becoming west northwest in the morning. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers and thunderstorms likely after 4am. Some of the storms could produce heavy rainfall. Increasing clouds, with a low around 68. South wind 5 to 7 mph becoming west northwest after midnight. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Independence Day
A 40 percent chance of showers and thunderstorms, mainly between 2pm and 3pm. Cloudy, then gradually becoming mostly sunny, with a high near 86. South southeast wind around 6 mph becoming west northwest in the afternoon. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms between 7pm and 1am, then a slight chance of showers after 1am. Partly cloudy, with a low around 65. Northwest wind 3 to 5 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83. North northwest wind 5 to 7 mph.
Sunday Night
Mostly clear, with a low around 63.
Monday
Sunny, with a high near 84.
Monday Night
Mostly clear, with a low around 63.
Tuesday
Sunny, with a high near 86.
Tuesday Night
Mostly clear, with a low around 65.
Wednesday
Mostly sunny, with a high near 88.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Thursday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marshalltown Municipal Airport IA
 42.12°N 92.92°W
Last Update:
5:27 am CDT Jul 3, 2026
Forecast Valid:
7am CDT Jul 3, 2026-6pm CDT Jul 9, 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