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

68°F

20°C

Humidity 45%
Wind Speed NW 13 mph
Barometer 29.91 in (1012.6 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 20 Mar 11:53 am CDT
Extended Forecast for

Grundy Center IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 72. North northwest wind 9 to 11 mph.

    High: 72 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 45. North northeast wind around 6 mph becoming south southeast after midnight.

    Low: 45 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 81. South wind 7 to 14 mph becoming west southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 48. South southwest wind 8 to 14 mph becoming northwest after midnight. Winds could gust as high as 20 mph.

    Low: 48 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, with a high near 58. Windy, with a north wind 16 to 21 mph, with gusts as high as 28 mph.

    High: 58 °F

    Mostly Cloudy
    and Windy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 30. Blustery.

    Low: 30 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

  • Monday

    Monday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 56.

    High: 56 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Sunny, with a high near 72. North northwest wind 9 to 11 mph.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 45. North northeast wind around 6 mph becoming south southeast after midnight.
Saturday
Sunny, with a high near 81. South wind 7 to 14 mph becoming west southwest in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Increasing clouds, with a low around 48. South southwest wind 8 to 14 mph becoming northwest after midnight. Winds could gust as high as 20 mph.
Sunday
Mostly cloudy, with a high near 58. Windy, with a north wind 16 to 21 mph, with gusts as high as 28 mph.
Sunday Night
Partly cloudy, with a low around 30. Blustery.
Monday
Sunny, with a high near 51.
Monday Night
Mostly cloudy, with a low around 38.
Tuesday
Mostly cloudy, with a high near 56.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Partly sunny, with a high near 59.
Wednesday Night
Mostly clear, with a low around 43.
Thursday
Mostly sunny, with a high near 60. 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:
12:26 pm CDT Mar 20, 2026
Forecast Valid:
12pm CDT Mar 20, 2026-6pm CDT Mar 26, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation