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

Hazardous Weather Conditions

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Overcast

76°F

24°C

Humidity 88%
Wind Speed S 6 mph
Barometer 29.97 in (1014.3 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index76°F (24°C)
Last update 25 Jul 11:53 am CDT
Extended Forecast for

Whitten IA

Extreme Heat Watch July 26, 09:00pm until July 27, 10:00pm
Heat Advisory until July 26, 12:00pm
Extreme Heat Warning July 26, 12:00pm until July 26, 09:00pm
Click here for hazard details and duration
Extreme Heat Watch
Heat Advisory
Extreme Heat Warning
  •  
    Heat Advisory until July 26, 12:00pm

    NOW until 12:00pm Sun

    Heat Advisory

  • This Afternoon

    High: 90 °F

    Mostly Sunny

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms after 5am. Increasing clouds, with a low around 72. South southeast wind 3 to 5 mph.

    Low: 72 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 94. Heat index values as high as 109. West northwest wind 5 to 10 mph becoming south southwest in the morning.

    High: 94 °F

    Slight Chance
    T-storms then
    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 4am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 75. South southwest wind 8 to 10 mph. Chance of precipitation is 30%.

    Low: 75 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms before 7am. Sunny, with a high near 94. South southwest wind 8 to 10 mph becoming northwest in the afternoon.

    High: 94 °F

    Chance
    Showers then
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 90. South southwest wind around 6 mph.
Tonight
A 10 percent chance of showers and thunderstorms after 5am. Increasing clouds, with a low around 72. South southeast wind 3 to 5 mph.
Sunday
A 20 percent chance of showers and thunderstorms before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 94. Heat index values as high as 109. West northwest wind 5 to 10 mph becoming south southwest in the morning.
Sunday Night
A chance of showers and thunderstorms before 4am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 75. South southwest wind 8 to 10 mph. Chance of precipitation is 30%.
Monday
A 30 percent chance of showers and thunderstorms before 7am. Sunny, with a high near 94. South southwest wind 8 to 10 mph becoming northwest in the afternoon.
Monday Night
Mostly clear, with a low around 70.
Tuesday
Mostly sunny, with a high near 89.
Tuesday Night
Mostly clear, with a low around 67.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Partly cloudy, with a low around 68.
Thursday
Mostly sunny, with a high near 89.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Friday
Sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Whitten IA
 42.26°N 93.03°W
Last Update:
12:22 pm CDT Jul 25, 2026
Forecast Valid:
12pm CDT Jul 25, 2026-6pm CDT Jul 31, 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