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

44°F

7°C

Humidity 30%
Wind Speed S 10 mph
Barometer 30.19 in (1023.0 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 28 Mar 10:53 pm CDT
Extended Forecast for

Grundy Center IA

  • Tonight

    Tonight: Mostly cloudy, with a low around 37. Breezy, with a south wind 11 to 16 mph, with gusts as high as 20 mph.

    Low: 37 °F

    Mostly Cloudy
    and Breezy

  • Sunday

    Sunday: Mostly sunny, with a high near 68. South wind 11 to 15 mph, with gusts as high as 22 mph.

    High: 68 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 44. South wind 6 to 10 mph.

    Low: 44 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 81. Breezy, with a south wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 23 mph.

    High: 81 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Monday Night

    Monday Night: A 40 percent chance of showers. Partly cloudy, with a low around 51. Breezy, with a south southwest wind 14 to 17 mph, with gusts as high as 24 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 51 °F

    Chance
    Showers and
    Breezy

  • Tuesday

    Tuesday: A 40 percent chance of showers. Mostly cloudy, with a high near 64. Windy. New precipitation amounts of less than a tenth of an inch possible.

    High: 64 °F

    Chance
    Showers and
    Windy

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain before 1am. Mostly cloudy, with a low around 30. Windy.

    Low: 30 °F

    Slight Chance
    Rain and
    Windy

  • Wednesday

    Wednesday: Partly sunny, with a high near 49.

    High: 49 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Tonight
Mostly cloudy, with a low around 37. Breezy, with a south wind 11 to 16 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 68. South wind 11 to 15 mph, with gusts as high as 22 mph.
Sunday Night
Mostly clear, with a low around 44. South wind 6 to 10 mph.
Monday
Mostly sunny, with a high near 81. Breezy, with a south wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 23 mph.
Monday Night
A 40 percent chance of showers. Partly cloudy, with a low around 51. Breezy, with a south southwest wind 14 to 17 mph, with gusts as high as 24 mph. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
A 40 percent chance of showers. Mostly cloudy, with a high near 64. Windy. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
A 20 percent chance of rain before 1am. Mostly cloudy, with a low around 30. Windy.
Wednesday
Partly sunny, with a high near 49.
Wednesday Night
A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 28.
Thursday
A chance of rain and snow before 1pm, then a chance of rain. Partly sunny, with a high near 45. Breezy. Chance of precipitation is 40%.
Thursday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 33. Breezy.
Friday
A 40 percent chance of rain. Mostly cloudy, with a high near 57. Breezy.
Friday Night
Rain likely. Mostly cloudy, with a low around 39. Breezy. Chance of precipitation is 60%.
Saturday
A 50 percent chance of rain. Mostly cloudy, with a high near 55. 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:
10:56 pm CDT Mar 28, 2026
Forecast Valid:
11pm CDT Mar 28, 2026-6pm CDT Apr 4, 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