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

7°F

-14°C

Humidity 76%
Wind Speed NW 10 mph
Barometer 30.16 in (1023.4 mb)
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Wind Chill-7°F (-22°C)
Last update 17 Mar 2:53 am CDT
Extended Forecast for

Grundy Center IA

  • Overnight

    Overnight: Mostly clear, with a low around 1. Wind chill values as low as -10. Northwest wind around 10 mph.

    Low: 1 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of flurries between 2pm and 3pm, then a chance of snow after 3pm. Increasing clouds, with a high near 25. Wind chill values as low as -10. West northwest wind 5 to 13 mph becoming south in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 30%. New snow accumulation of less than one inch possible.

    High: 25 °F

    Mostly Sunny
    then Chance
    Snow

  • Tuesday Night

    Tuesday Night: Snow and freezing rain likely before 1am, then a slight chance of snow between 1am and 2am. Cloudy, then gradually becoming partly cloudy, with a steady temperature around 23. Wind chill values as low as 10. South wind 8 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. Little or no ice accumulation expected. New snow accumulation of less than one inch possible.

    Low: 23 °F

    Snow Likely
    then Slight
    Chance Wintry
    Mix

  • Wednesday

    Wednesday: Mostly sunny, with a high near 46. Southwest wind around 6 mph.

    High: 46 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 33. Southwest wind around 7 mph.

    Low: 33 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 1. Wind chill values as low as -10. Northwest wind around 10 mph.
Tuesday
A chance of flurries between 2pm and 3pm, then a chance of snow after 3pm. Increasing clouds, with a high near 25. Wind chill values as low as -10. West northwest wind 5 to 13 mph becoming south in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 30%. New snow accumulation of less than one inch possible.
Tuesday Night
Snow and freezing rain likely before 1am, then a slight chance of snow between 1am and 2am. Cloudy, then gradually becoming partly cloudy, with a steady temperature around 23. Wind chill values as low as 10. South wind 8 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. Little or no ice accumulation expected. New snow accumulation of less than one inch possible.
Wednesday
Mostly sunny, with a high near 46. Southwest wind around 6 mph.
Wednesday Night
Mostly cloudy, with a low around 33. Southwest wind around 7 mph.
Thursday
Sunny, with a high near 56.
Thursday Night
Partly cloudy, with a low around 39.
Friday
Mostly sunny, with a high near 66.
Friday Night
Mostly cloudy, with a low around 42.
Saturday
Mostly sunny, with a high near 70.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
Mostly sunny, with a high near 56. Breezy.
Sunday Night
Mostly cloudy, with a low around 28.
Monday
Partly sunny, with a high near 45.
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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:
2:36 am CDT Mar 17, 2026
Forecast Valid:
3am CDT Mar 17, 2026-6pm CDT Mar 23, 2026
 
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Additional Resources

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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