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.

Mostly Cloudy

6°F

-14°C

Humidity 69%
Wind Speed W 7 mph
Barometer 30.30 in (1028.5 mb)
Dewpoint -2°F (-19°C)
Visibility 10.00 mi
Wind Chill-6°F (-21°C)
Last update 19 Jan 6:53 pm CST
Extended Forecast for

Grundy Center IA

  • Tonight

    Tonight: Cloudy during the early evening, then gradual clearing, with a low around -1. Wind chill values as low as -10. West wind 3 to 7 mph.

    Low: -1 °F

    Gradual
    Clearing

  • Tuesday

    Tuesday: Increasing clouds, with a high near 20. Wind chill values as low as -10. Light and variable wind becoming south 5 to 8 mph in the morning.

    High: 20 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 13. Wind chill values as low as zero. Southeast wind 5 to 10 mph becoming west northwest after midnight. New snow accumulation of less than a half inch possible.

    Low: 13 °F

    Chance Snow

  • Wednesday

    Wednesday: A 20 percent chance of snow after noon. Mostly sunny, with a high near 30. Wind chill values as low as zero. Breezy, with a west southwest wind 10 to 17 mph, with gusts as high as 24 mph.

    High: 30 °F

    Mostly Sunny
    then Slight
    Chance Snow
    and Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 6. Blustery, with a west northwest wind 9 to 17 mph, with gusts as high as 24 mph.

    Low: 6 °F

    Partly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 18.

    High: 18 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -13.

    Low: -13 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny and cold, with a high near -6.

    High: -6 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -17.

    Low: -17 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Cloudy during the early evening, then gradual clearing, with a low around -1. Wind chill values as low as -10. West wind 3 to 7 mph.
Tuesday
Increasing clouds, with a high near 20. Wind chill values as low as -10. Light and variable wind becoming south 5 to 8 mph in the morning.
Tuesday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 13. Wind chill values as low as zero. Southeast wind 5 to 10 mph becoming west northwest after midnight. New snow accumulation of less than a half inch possible.
Wednesday
A 20 percent chance of snow after noon. Mostly sunny, with a high near 30. Wind chill values as low as zero. Breezy, with a west southwest wind 10 to 17 mph, with gusts as high as 24 mph.
Wednesday Night
Partly cloudy, with a low around 6. Blustery, with a west northwest wind 9 to 17 mph, with gusts as high as 24 mph.
Thursday
Mostly sunny, with a high near 18.
Thursday Night
Partly cloudy, with a low around -13.
Friday
Mostly sunny and cold, with a high near -6.
Friday Night
Mostly cloudy, with a low around -17.
Saturday
Mostly sunny and cold, with a high near -2.
Saturday Night
Partly cloudy, with a low around -11.
Sunday
Mostly sunny and cold, with a high near 10.
Sunday Night
Partly cloudy, with a low around 0.
Monday
Mostly sunny, with a high near 17.
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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:
5:56 pm CST Jan 19, 2026
Forecast Valid:
7pm CST Jan 19, 2026-6pm CST Jan 26, 2026
 
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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