Heat Wave and Severe Thunderstorms this Independence Day

A prolonged, dangerous heat wave will persist through the Independence Day weekend across the Ohio Valley, Midwest, and Mid-Atlantic. Numerous temperature records are expected. Clusters of severe thunderstorms will move across parts of the Allegheny Plateau into Mid Atlantic this Independence Day, with potential for widespread damaging winds. Additional severe thunderstorms in the Great Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Fair

77°F

25°C

Humidity 77%
Wind Speed E 6 mph
Barometer 29.95 in (1013.6 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 4 Jul 7:53 pm CDT
Extended Forecast for

3 Miles SSE Marshalltown IA

  • Tonight

    Tonight: A chance of showers and thunderstorms before 1am, then a slight chance of showers.  Mostly cloudy, with a low around 64. Calm wind.  Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms, mainly after 3pm.  Partly sunny, with a high near 83. North northeast wind 3 to 6 mph.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 63. Northeast wind around 5 mph becoming calm  in the evening.

    Low: 63 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 84. Calm wind becoming east around 5 mph.

    High: 84 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 63. Light east southeast wind.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely after 1am.  Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

    Low: 67 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A 40 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 83. North northeast wind 3 to 6 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Partly cloudy, with a low around 63. Northeast wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 84. Calm wind becoming east around 5 mph.
Monday Night
Mostly clear, with a low around 63. Light east southeast wind.
Tuesday
Sunny, with a high near 86.
Tuesday Night
Mostly clear, with a low around 64.
Wednesday
Mostly sunny, with a high near 88.
Wednesday Night
A chance of showers and thunderstorms, then showers likely after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Thursday Night
Mostly cloudy, with a low around 64.
Friday
Mostly sunny, with a high near 84.
Friday Night
Partly cloudy, with a low around 63.
Saturday
Mostly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Marshalltown IA
 41.99°N 92.89°W
2:57 pm CDT Jul 4, 2026
8pm CDT Jul 4, 2026-6pm CDT Jul 11, 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