National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Mostly Cloudy and Windy

39°F

4°C

Humidity 79%
Wind Speed NW 28 G 41 mph
Barometer 29.41 in (996.6 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 9 Dec 10:53 pm CST
Extended Forecast for

Grundy Center IA

Winter Weather Advisory until December 10, 06:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until December 10, 06:00am

    NOW until 6:00am Wed

    Winter Weather Advisory

  • Tonight

    Low: 24 °F

    Slight Chance
    Rain/Snow and
    Windy

  • Wednesday

    Wednesday: A slight chance of snow between noon and 3pm. Cloudy, with a temperature falling to around 20 by 5pm. Wind chill values as low as 5. Windy, with a northwest wind 25 to 30 mph decreasing to 15 to 20 mph in the afternoon. Winds could gust as high as 46 mph. Chance of precipitation is 20%.

    High: 27 °F⇓

    Windy. Cloudy
    then Slight
    Chance Snow

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 9. Northwest wind 8 to 13 mph becoming light west northwest after midnight. Winds could gust as high as 21 mph.

    Low: 9 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 50 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 23. Wind chill values as low as 5. Calm wind becoming south southeast 5 to 7 mph in the morning. New snow accumulation of around an inch possible.

    High: 23 °F

    Slight Chance
    Snow then
    Chance Snow

  • Thursday Night

    Thursday Night: A 50 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 14. East southeast wind 6 to 9 mph becoming north after midnight. New snow accumulation of less than one inch possible.

    Low: 14 °F

    Chance Snow
    then Slight
    Chance Snow

  • Friday

    Friday: A 20 percent chance of snow. Mostly cloudy, with a high near 22. Blustery.

    High: 22 °F

    Slight Chance
    Snow and
    Blustery

  • Friday Night

    Friday Night: A 20 percent chance of snow after midnight. Cloudy, with a low around 2.

    Low: 2 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday

    Saturday: Snow likely, mainly before noon. Mostly cloudy and cold, with a high near 6. Chance of precipitation is 60%.

    High: 6 °F

    Snow Likely

Detailed Forecast

Tonight
A slight chance of rain and snow between 3am and 4am, then a slight chance of snow after 4am. Mostly cloudy, with a low around 24. Windy, with a northwest wind 29 to 32 mph, with gusts as high as 49 mph. Chance of precipitation is 20%.
Wednesday
A slight chance of snow between noon and 3pm. Cloudy, with a temperature falling to around 20 by 5pm. Wind chill values as low as 5. Windy, with a northwest wind 25 to 30 mph decreasing to 15 to 20 mph in the afternoon. Winds could gust as high as 46 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 9. Northwest wind 8 to 13 mph becoming light west northwest after midnight. Winds could gust as high as 21 mph.
Thursday
A 50 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 23. Wind chill values as low as 5. Calm wind becoming south southeast 5 to 7 mph in the morning. New snow accumulation of around an inch possible.
Thursday Night
A 50 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 14. East southeast wind 6 to 9 mph becoming north after midnight. New snow accumulation of less than one inch possible.
Friday
A 20 percent chance of snow. Mostly cloudy, with a high near 22. Blustery.
Friday Night
A 20 percent chance of snow after midnight. Cloudy, with a low around 2.
Saturday
Snow likely, mainly before noon. Mostly cloudy and cold, with a high near 6. Chance of precipitation is 60%.
Saturday Night
Partly cloudy, with a low around -13.
Sunday
Sunny and cold, with a high near 4.
Sunday Night
Mostly cloudy, with a low around -8.
Monday
Mostly sunny, with a high near 21.
Monday Night
Mostly cloudy, with a low around 5.
Tuesday
Partly sunny, with a high near 28.
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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:
10:47 pm CST Dec 9, 2025
Forecast Valid:
11pm CST Dec 9, 2025-6pm CST Dec 16, 2025
 
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