Dangerous Heat in the East; Critical Fire Weather in the Southwest

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Heat is likely to continue across the eastern U.S. through the Independence Day holiday weekend. Critical fire weather conditions will continue today and likely Tuesday across portions of the Four Corners and northern High Plains. Read More >

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Fair

86°F

30°C

Humidity 70%
Wind Speed S 16 G 32 mph
Barometer 29.76 in (1006.9 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 29 Jun 11:53 am CDT
Extended Forecast for

5 Miles E Marshalltown Municipal Airport IA

Extreme Heat Warning June 29, 12:45pm until June 30, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning June 29, 12:45pm until June 30, 09:00pm

    NOW until 9:00pm Tue

    Extreme Heat Warning

  • This Afternoon

    High: 93 °F

    Sunny and
    Windy

  • Tonight

    Tonight: Partly cloudy, with a low around 76. Windy, with a south wind 13 to 22 mph, with gusts as high as 31 mph.

    Low: 76 °F

    Partly Cloudy
    and Windy
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 94. Heat index values as high as 102. Breezy, with a south southwest wind 13 to 17 mph, with gusts as high as 26 mph.

    High: 94 °F

    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms, mainly between 8pm and 11pm.  Partly cloudy, with a low around 74. South southwest wind 11 to 14 mph, with gusts as high as 21 mph.

    Low: 74 °F

    Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 92. Breezy, with a south southwest wind 11 to 20 mph, with gusts as high as 31 mph.

    High: 92 °F

    Mostly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: A slight chance of showers, then a chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 75. Breezy.  Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 75 °F

    Chance
    Showers and
    Breezy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 92.

    High: 92 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 72.

    Low: 72 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 93. Heat index values as high as 106. Windy, with a south wind 20 to 22 mph, with gusts as high as 32 mph.
Tonight
Partly cloudy, with a low around 76. Windy, with a south wind 13 to 22 mph, with gusts as high as 31 mph.
Tuesday
Sunny, with a high near 94. Heat index values as high as 102. Breezy, with a south southwest wind 13 to 17 mph, with gusts as high as 26 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms, mainly between 8pm and 11pm. Partly cloudy, with a low around 74. South southwest wind 11 to 14 mph, with gusts as high as 21 mph.
Wednesday
Mostly sunny, with a high near 92. Breezy, with a south southwest wind 11 to 20 mph, with gusts as high as 31 mph.
Wednesday Night
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75. Breezy. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Friday
Mostly sunny, with a high near 90.
Friday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 71.
Independence Day
Mostly sunny, with a high near 89.
Saturday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Sunday
Mostly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles E Marshalltown Municipal Airport IA
 42.1°N 92.83°W
11:52 am CDT Jun 29, 2026
12pm CDT Jun 29, 2026-6pm CDT Jul 5, 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