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.

Fair

82°F

28°C

Humidity 32%
Wind Speed S 9 mph
Barometer 29.98 in (1014.9 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 24 May 4:53 pm CDT
Extended Forecast for

Grundy Center IA

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 5am. Partly cloudy, with a low around 58. South southwest wind 7 to 11 mph.

    Low: 58 °F

    Mostly Clear
    then Chance
    Showers

  • Memorial Day

    Memorial Day: A chance of showers and thunderstorms before 7am, then a slight chance of showers between 7am and 9am. Partly sunny, then gradually becoming sunny, with a high near 83. Breezy, with a south wind 9 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.

    High: 83 °F

    Chance
    Showers then
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 59. South wind 7 to 11 mph.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86. South wind 7 to 10 mph.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 59. South wind 5 to 7 mph becoming calm after midnight.

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 59.

    Low: 59 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms, mainly after 5am. Partly cloudy, with a low around 58. South southwest wind 7 to 11 mph.
Memorial Day
A chance of showers and thunderstorms before 7am, then a slight chance of showers between 7am and 9am. Partly sunny, then gradually becoming sunny, with a high near 83. Breezy, with a south wind 9 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
Monday Night
Mostly clear, with a low around 59. South wind 7 to 11 mph.
Tuesday
Sunny, with a high near 86. South wind 7 to 10 mph.
Tuesday Night
Mostly clear, with a low around 59. South wind 5 to 7 mph becoming calm after midnight.
Wednesday
Sunny, with a high near 85.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
Mostly sunny, with a high near 83.
Thursday Night
Mostly cloudy, with a low around 59.
Friday
Partly sunny, with a high near 80.
Friday Night
Mostly cloudy, with a low around 57.
Saturday
Mostly sunny, with a high near 77.
Saturday Night
Partly cloudy, with a low around 55.
Sunday
Mostly sunny, with a high near 78.
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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:
1:56 pm CDT May 24, 2026
Forecast Valid:
5pm CDT May 24, 2026-6pm CDT May 31, 2026
 
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Additional Resources

Radar & Satellite Image

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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