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

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Fair

19°C

66°F

Humidity 90%
Wind Speed SW 9 km/h
Barometer 1015.7 mb (30.01 in)
Dewpoint 17°C (63°F)
Visibility 16 km
Last update 12 Jul 10:53 pm CDT
Extended Forecast for

Grundy Center IA

  • Tonight

    Tonight: Partly cloudy, with a low around 15. West wind 5 to 8 km/h.

    Low: 15 °C

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 28. Southwest wind 8 to 16 km/h.

    High: 28 °C

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 18. South southwest wind 10 to 13 km/h.

    Low: 18 °C

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 31. Southwest wind around 11 km/h.

    High: 31 °C

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 19. South wind around 10 km/h.

    Low: 19 °C

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 31.

    High: 31 °C

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 20.

    Low: 20 °C

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 28.

    High: 28 °C

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 18.

    Low: 18 °C

    Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 15. West wind 5 to 8 km/h.
Sunday
Sunny, with a high near 28. Southwest wind 8 to 16 km/h.
Sunday Night
Mostly clear, with a low around 18. South southwest wind 10 to 13 km/h.
Monday
Sunny, with a high near 31. Southwest wind around 11 km/h.
Monday Night
Mostly clear, with a low around 19. South wind around 10 km/h.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 31.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 20.
Wednesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 28.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 18.
Thursday
Partly sunny, with a high near 26.
Thursday Night
Partly cloudy, with a low around 16.
Friday
Partly sunny, with a high near 26.
Friday Night
A 30 percent chance of showers. Partly cloudy, with a low around 17.
Saturday
Partly sunny, with a high near 27.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grundy Center IA
 42.36°N 92.76°W
Last Update:
10:36 pm CDT Jul 12, 2025
Forecast Valid:
11pm CDT Jul 12, 2025-6pm CDT Jul 19, 2025
 
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