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

51°F

11°C

Humidity 80%
Wind Speed N 7 mph
Barometer 30.23 in (1023.9 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 20 May 9:53 pm CDT
Extended Forecast for

Grundy Center IA

  • Tonight

    Tonight: Mostly cloudy, with a low around 43. East northeast wind 5 to 8 mph.

    Low: 43 °F

    Mostly Cloudy

  • Thursday

    Thursday: Cloudy, with a high near 61. East wind 11 to 13 mph, with gusts as high as 20 mph.

    High: 61 °F

    Cloudy

  • Thursday Night

    Thursday Night: A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 45. East wind 11 to 13 mph, with gusts as high as 20 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 45 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: A chance of showers before 10am, then a chance of showers after 11am. Mostly cloudy, with a high near 62. Breezy, with an east wind 13 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 62 °F

    Chance
    Showers and
    Breezy

  • Friday Night

    Friday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 48. East wind 5 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 48 °F

    Showers
    Likely

  • Saturday

    Saturday: Partly sunny, with a high near 71.

    High: 71 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 43. East northeast wind 5 to 8 mph.
Thursday
Cloudy, with a high near 61. East wind 11 to 13 mph, with gusts as high as 20 mph.
Thursday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 45. East wind 11 to 13 mph, with gusts as high as 20 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday
A chance of showers before 10am, then a chance of showers after 11am. Mostly cloudy, with a high near 62. Breezy, with an east wind 13 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 48. East wind 5 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Partly sunny, with a high near 71.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 78.
Sunday Night
Mostly clear, with a low around 52.
Memorial Day
Sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
Mostly sunny, with a high near 83.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
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:
10:17 pm CDT May 20, 2026
Forecast Valid:
10pm CDT May 20, 2026-6pm CDT May 27, 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