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

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 >

Hazardous Weather Conditions

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Mostly Cloudy and Breezy

89°F

32°C

Humidity 68%
Wind Speed S 25 G 35 mph
Barometer 29.74 in (1006.2 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index102°F (39°C)
Last update 29 Jun 2:53 pm CDT
Extended Forecast for

Zearing IA

Extreme Heat Warning June 29, 03:30pm until July 1, 10:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning June 29, 03:30pm until July 1, 10:00pm

    NOW until 10:00pm Wed

    Extreme Heat Warning

  • This Afternoon

    High: 93 °F

    Sunny and
    Windy

  • Tonight

    Tonight: Partly cloudy, with a low around 76. Windy, with a south southwest wind 14 to 21 mph, with gusts as high as 33 mph.

    Low: 76 °F

    Partly Cloudy
    and Windy
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 94. Heat index values as high as 103. Breezy, with a southwest wind 13 to 17 mph, with gusts as high as 26 mph.

    High: 94 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms, mainly before 10pm. Partly cloudy, with a low around 74. South southwest wind 10 to 13 mph, with gusts as high as 18 mph. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    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 17 mph, with gusts as high as 28 mph.

    High: 92 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 74. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 74 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 91.

    High: 91 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 50 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 around 23 mph, with gusts as high as 34 mph.
Tonight
Partly cloudy, with a low around 76. Windy, with a south southwest wind 14 to 21 mph, with gusts as high as 33 mph.
Tuesday
Mostly sunny, with a high near 94. Heat index values as high as 103. Breezy, with a southwest wind 13 to 17 mph, with gusts as high as 26 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms, mainly before 10pm. Partly cloudy, with a low around 74. South southwest wind 10 to 13 mph, with gusts as high as 18 mph. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Mostly sunny, with a high near 92. Breezy, with a south southwest wind 11 to 17 mph, with gusts as high as 28 mph.
Wednesday Night
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 74. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A 40 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 91.
Thursday Night
A 50 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. Partly cloudy, with a low around 71.
Independence Day
Mostly sunny, with a high near 90.
Saturday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 70. Chance of precipitation is 60%.
Sunday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Zearing IA
 42.15°N 93.3°W
Last Update:
3:13 pm CDT Jun 29, 2026
Forecast Valid:
3pm CDT Jun 29, 2026-6pm CDT Jul 5, 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