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.

Overcast

58°F

14°C

Humidity 62%
Wind Speed E 14 mph
Barometer 30.14 in (1020.7 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 21 May 5:53 pm CDT
Extended Forecast for

Grundy Center IA

  • Tonight

    Tonight: A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 46. East wind 10 to 13 mph, with gusts as high as 18 mph.

    Low: 46 °F

    Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 67. Breezy, with an east wind 13 to 17 mph, with gusts as high as 24 mph.

    High: 67 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Friday Night

    Friday Night: A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 50. East southeast wind 9 to 14 mph becoming light southeast after midnight. Winds could gust as high as 20 mph.

    Low: 50 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 74. Light and variable wind becoming west 5 to 8 mph in the morning.

    High: 74 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 50. West northwest wind around 6 mph becoming calm in the evening.

    Low: 50 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Memorial Day

    Memorial Day: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

Detailed Forecast

Tonight
A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 46. East wind 10 to 13 mph, with gusts as high as 18 mph.
Friday
Mostly cloudy, with a high near 67. Breezy, with an east wind 13 to 17 mph, with gusts as high as 24 mph.
Friday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 50. East southeast wind 9 to 14 mph becoming light southeast after midnight. Winds could gust as high as 20 mph.
Saturday
Mostly sunny, with a high near 74. Light and variable wind becoming west 5 to 8 mph in the morning.
Saturday Night
Partly cloudy, with a low around 50. West northwest wind around 6 mph becoming calm in the evening.
Sunday
Sunny, with a high near 78.
Sunday Night
Mostly clear, with a low around 54.
Memorial Day
Sunny, with a high near 83.
Monday Night
Mostly clear, with a low around 57.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Wednesday Night
Partly cloudy, with a low around 60.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grundy Center IA
 42.36°N 92.76°W
Last Update:
5:56 pm CDT May 21, 2026
Forecast Valid:
6pm CDT May 21, 2026-6pm CDT May 28, 2026
 
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