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

45°F

7°C

Humidity 40%
Wind Speed S 8 mph
Barometer 29.90 in (1012.8 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 15 Feb 10:53 pm CST
Extended Forecast for

Grundy Center IA

  • Tonight

    Tonight: Mostly cloudy, with a steady temperature around 42. Light south wind becoming southwest 8 to 13 mph after midnight. Winds could gust as high as 18 mph.

    Low: 42 °F

    Mostly Cloudy

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 62. Southwest wind 5 to 13 mph becoming southeast in the afternoon. Winds could gust as high as 18 mph.

    High: 62 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 40. East southeast wind 6 to 8 mph.

    Low: 40 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 61. Windy, with a southeast wind 9 to 14 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 31 mph.

    High: 61 °F

    Partly Sunny
    and Windy

  • Tuesday Night

    Tuesday Night: A 40 percent chance of rain. Partly cloudy, with a low around 46. Breezy, with a southeast wind 16 to 18 mph becoming west southwest after midnight. Winds could gust as high as 26 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 46 °F

    Chance Rain
    and Breezy

  • Wednesday

    Wednesday: Sunny, with a high near 57. Windy.

    High: 57 °F

    Sunny and
    Windy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of snow before noon, then a chance of rain and snow. Partly sunny, with a high near 47. Breezy. Chance of precipitation is 40%.

    High: 47 °F

    Slight Chance
    Snow then
    Chance
    Rain/Snow and
    Breezy

  • Thursday Night

    Thursday Night: A chance of rain and snow before midnight. Mostly cloudy, with a low around 23. Blustery. Chance of precipitation is 40%.

    Low: 23 °F

    Chance
    Rain/Snow and
    Blustery then
    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a steady temperature around 42. Light south wind becoming southwest 8 to 13 mph after midnight. Winds could gust as high as 18 mph.
Washington's Birthday
Mostly sunny, with a high near 62. Southwest wind 5 to 13 mph becoming southeast in the afternoon. Winds could gust as high as 18 mph.
Monday Night
Mostly cloudy, with a low around 40. East southeast wind 6 to 8 mph.
Tuesday
Partly sunny, with a high near 61. Windy, with a southeast wind 9 to 14 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 31 mph.
Tuesday Night
A 40 percent chance of rain. Partly cloudy, with a low around 46. Breezy, with a southeast wind 16 to 18 mph becoming west southwest after midnight. Winds could gust as high as 26 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Sunny, with a high near 57. Windy.
Wednesday Night
Mostly clear, with a low around 31.
Thursday
A slight chance of snow before noon, then a chance of rain and snow. Partly sunny, with a high near 47. Breezy. Chance of precipitation is 40%.
Thursday Night
A chance of rain and snow before midnight. Mostly cloudy, with a low around 23. Blustery. Chance of precipitation is 40%.
Friday
Partly sunny, with a high near 33. Breezy.
Friday Night
Mostly cloudy, with a low around 19.
Saturday
A 30 percent chance of snow. Mostly sunny, with a high near 36.
Saturday Night
Partly cloudy, with a low around 16.
Sunday
Sunny, with a high near 31.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grundy Center IA
 42.36°N 92.76°W
Last Update:
10:35 pm CST Feb 15, 2026
Forecast Valid:
10pm CST Feb 15, 2026-6pm CST Feb 22, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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