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.

68°F

20°C

Humidity 73%
Wind Speed SE 9 mph
Barometer 30.12 in (1019.3 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 16 Sep 9:53 pm CDT
Extended Forecast for

Grundy Center IA

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 62. Calm wind. Chance of precipitation is 20%.

    Low: 62 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 86. Calm wind becoming south southeast 5 to 7 mph in the afternoon. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61. East southeast wind 3 to 6 mph.

    Low: 61 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 83. Southeast wind 3 to 8 mph. Chance of precipitation is 30%.

    High: 83 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Southeast wind around 6 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Chance
    T-storms

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 77. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59.

    Low: 59 °F

    Chance
    T-storms

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 80. Chance of precipitation is 40%.

    High: 80 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60.

    Low: 60 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 62. Calm wind. Chance of precipitation is 20%.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 86. Calm wind becoming south southeast 5 to 7 mph in the afternoon. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61. East southeast wind 3 to 6 mph.
Thursday
A chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 83. Southeast wind 3 to 8 mph. Chance of precipitation is 30%.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Southeast wind around 6 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 77. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 80. Chance of precipitation is 40%.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60.
Sunday
Partly sunny, with a high near 79.
Sunday Night
A 30 percent chance of showers. Partly cloudy, with a low around 60.
Monday
A 30 percent chance of showers. Mostly sunny, with a high near 80.
Monday Night
A 30 percent chance of showers. Partly cloudy, with a low around 56.
Tuesday
Sunny, with a high near 77.
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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:
6:36 pm CDT Sep 16, 2025
Forecast Valid:
10pm CDT Sep 16, 2025-6pm CDT Sep 23, 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