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

61°F

16°C

Humidity 44%
Wind Speed W 7 mph
Barometer 29.65 in (1003.9 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 9 Mar 11:53 am CDT
Extended Forecast for

Grundy Center IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 66. West northwest wind around 7 mph becoming northeast.

    High: 66 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 39. Northeast wind 3 to 6 mph.

    Low: 39 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 60. East northeast wind 7 to 11 mph.

    High: 60 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain after 1am. Mostly cloudy, with a low around 34. Breezy, with a north northeast wind 14 to 16 mph, with gusts as high as 21 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 34 °F

    Mostly Cloudy
    then Chance
    Rain and
    Breezy

  • Wednesday

    Wednesday: A chance of rain before 10am, then a chance of snow between 10am and 1pm. Mostly cloudy, with a high near 45. Windy, with a north northwest wind 18 to 22 mph, with gusts as high as 29 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 45 °F

    Windy. Chance
    Rain/Snow
    then Chance
    Snow

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 26.

    Low: 26 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly cloudy, with a high near 52. Windy.

    High: 52 °F

    Partly Sunny
    then Mostly
    Cloudy and
    Windy

  • Thursday Night

    Thursday Night: A chance of rain before 1am, then a slight chance of rain and snow. Mostly cloudy, with a low around 35. Windy. Chance of precipitation is 50%.

    Low: 35 °F

    Windy. Chance
    Rain then
    Chance
    Rain/Snow

  • Friday

    Friday: Partly sunny, with a high near 47. Breezy.

    High: 47 °F

    Partly Sunny
    and Breezy

Detailed Forecast

This Afternoon
Sunny, with a high near 66. West northwest wind around 7 mph becoming northeast.
Tonight
Mostly clear, with a low around 39. Northeast wind 3 to 6 mph.
Tuesday
Mostly sunny, with a high near 60. East northeast wind 7 to 11 mph.
Tuesday Night
A 30 percent chance of rain after 1am. Mostly cloudy, with a low around 34. Breezy, with a north northeast wind 14 to 16 mph, with gusts as high as 21 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A chance of rain before 10am, then a chance of snow between 10am and 1pm. Mostly cloudy, with a high near 45. Windy, with a north northwest wind 18 to 22 mph, with gusts as high as 29 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Wednesday Night
Mostly clear, with a low around 26.
Thursday
Mostly cloudy, with a high near 52. Windy.
Thursday Night
A chance of rain before 1am, then a slight chance of rain and snow. Mostly cloudy, with a low around 35. Windy. Chance of precipitation is 50%.
Friday
Partly sunny, with a high near 47. Breezy.
Friday Night
A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 31.
Saturday
Mostly cloudy, with a high near 48.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 32. Breezy. Chance of precipitation is 50%.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 44. Windy. Chance of precipitation is 40%.
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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:
12:02 pm CDT Mar 9, 2026
Forecast Valid:
12pm CDT Mar 9, 2026-6pm CDT Mar 15, 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