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

2°F

-17°C

Humidity 69%
Wind Speed SW 5 mph
Barometer 30.30 in (1028.4 mb)
Dewpoint -6°F (-21°C)
Visibility 10.00 mi
Wind Chill-8°F (-22°C)
Last update 20 Jan 12:53 am CST
Extended Forecast for

Grundy Center IA

  • Overnight

    Overnight: Clear, with a low around -1. Wind chill values as low as -10. West wind around 5 mph becoming calm.

    Low: -1 °F

    Clear

  • Tuesday

    Tuesday: A 30 percent chance of snow, mainly after 5pm. Increasing clouds, with a high near 20. Wind chill values as low as -10. Calm wind becoming south 5 to 8 mph in the morning. New snow accumulation of less than a half inch possible.

    High: 20 °F

    Mostly Sunny
    then Chance
    Snow

  • Tuesday Night

    Tuesday Night: Snow likely, mainly before 11pm. 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. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    Low: 13 °F

    Snow Likely
    then 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

Overnight
Clear, with a low around -1. Wind chill values as low as -10. West wind around 5 mph becoming calm.
Tuesday
A 30 percent chance of snow, mainly after 5pm. Increasing clouds, with a high near 20. Wind chill values as low as -10. Calm wind becoming south 5 to 8 mph in the morning. New snow accumulation of less than a half inch possible.
Tuesday Night
Snow likely, mainly before 11pm. 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. Chance of precipitation is 60%. New snow accumulation of around an 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:
10:11 pm CST Jan 19, 2026
Forecast Valid:
1am CST Jan 20, 2026-6pm CST Jan 26, 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