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

65°F

18°C

Humidity 63%
Wind Speed SE 17 mph
Barometer 29.93 in (1013.4 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 22 May 4:53 pm CDT
Extended Forecast for

Grundy Center IA

  • Tonight

    Tonight: A 20 percent chance of showers after 4am. Mostly cloudy, with a low around 52. Southeast wind 5 to 14 mph, with gusts as high as 20 mph.

    Low: 52 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: A 10 percent chance of showers before 7am. Mostly sunny, with a high near 75. Light and variable wind becoming west northwest 5 to 9 mph in the morning.

    High: 75 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 50. West northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 50 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 80. Calm wind becoming south southwest 5 to 8 mph in the afternoon.

    High: 80 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 55. South wind around 6 mph.

    Low: 55 °F

    Mostly Clear

  • Memorial Day

    Memorial Day: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Tuesday Night

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

    Low: 60 °F

    Mostly Clear

Detailed Forecast

Tonight
A 20 percent chance of showers after 4am. Mostly cloudy, with a low around 52. Southeast wind 5 to 14 mph, with gusts as high as 20 mph.
Saturday
A 10 percent chance of showers before 7am. Mostly sunny, with a high near 75. Light and variable wind becoming west northwest 5 to 9 mph in the morning.
Saturday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 50. West northwest wind 5 to 7 mph becoming calm in the evening.
Sunday
Sunny, with a high near 80. Calm wind becoming south southwest 5 to 8 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 55. South wind around 6 mph.
Memorial Day
Sunny, with a high near 84.
Monday Night
Mostly clear, with a low around 59.
Tuesday
Sunny, with a high near 85.
Tuesday Night
Mostly clear, with a low around 60.
Wednesday
Mostly sunny, with a high near 83.
Wednesday Night
Partly cloudy, with a low around 60.
Thursday
Mostly sunny, with a high near 81.
Thursday Night
Partly cloudy, with a low around 59.
Friday
Mostly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grundy Center IA
 42.36°N 92.76°W
Last Update:
2:11 pm CDT May 22, 2026
Forecast Valid:
5pm CDT May 22, 2026-6pm CDT May 29, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation