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.

Overcast

35°F

2°C

Humidity 85%
Wind Speed W 16 mph
Barometer 29.97 in (1015.6 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 7 Mar 2:53 pm CST
Extended Forecast for

Grundy Center IA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 43. West northwest wind 11 to 15 mph, with gusts as high as 21 mph.

    High: 43 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 34. Breezy, with a southwest wind 7 to 16 mph, with gusts as high as 24 mph.

    Low: 34 °F

    Mostly Clear
    then Mostly
    Clear and
    Breezy

  • Sunday

    Sunday: Sunny, with a high near 63. Breezy, with a southwest wind 14 to 18 mph, with gusts as high as 30 mph.

    High: 63 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Clear, with a low around 42. Breezy, with a southwest wind 11 to 18 mph, with gusts as high as 26 mph.

    Low: 42 °F

    Clear and
    Breezy

  • Monday

    Monday: Sunny, with a high near 66. Southwest wind 8 to 10 mph.

    High: 66 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 41.

    Low: 41 °F

    Clear

  • Tuesday

    Tuesday: A slight chance of rain between noon and 3pm, then a slight chance of rain and thunderstorms after 3pm. Mostly sunny, with a high near 64. Chance of precipitation is 20%.

    High: 64 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 31. Blustery.

    Low: 31 °F

    Chance Rain
    and Blustery

  • Wednesday

    Wednesday: A chance of rain and snow before noon. Partly sunny, with a high near 42. Windy. Chance of precipitation is 40%.

    High: 42 °F

    Windy. Chance
    Rain/Snow
    then Mostly
    Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 43. West northwest wind 11 to 15 mph, with gusts as high as 21 mph.
Tonight
Mostly clear, with a low around 34. Breezy, with a southwest wind 7 to 16 mph, with gusts as high as 24 mph.
Sunday
Sunny, with a high near 63. Breezy, with a southwest wind 14 to 18 mph, with gusts as high as 30 mph.
Sunday Night
Clear, with a low around 42. Breezy, with a southwest wind 11 to 18 mph, with gusts as high as 26 mph.
Monday
Sunny, with a high near 66. Southwest wind 8 to 10 mph.
Monday Night
Clear, with a low around 41.
Tuesday
A slight chance of rain between noon and 3pm, then a slight chance of rain and thunderstorms after 3pm. Mostly sunny, with a high near 64. Chance of precipitation is 20%.
Tuesday Night
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 31. Blustery.
Wednesday
A chance of rain and snow before noon. Partly sunny, with a high near 42. Windy. Chance of precipitation is 40%.
Wednesday Night
Partly cloudy, with a low around 25. Blustery.
Thursday
Partly sunny, with a high near 50. Breezy.
Thursday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 38. Windy.
Friday
Partly sunny, with a high near 52. Windy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grundy Center IA
 42.36°N 92.76°W
Last Update:
12:56 pm CST Mar 7, 2026
Forecast Valid:
3pm CST Mar 7, 2026-6pm CDT Mar 13, 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