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

68°F

20°C

Humidity 63%
Wind Speed SW 10 mph
Barometer 29.66 in (1003.9 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 30 Mar 11:53 pm CDT
Extended Forecast for

Grundy Center IA

  • Overnight

    Overnight: Mostly cloudy, with a low around 56. South southwest wind 9 to 11 mph, with gusts as high as 20 mph.

    Low: 56 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of rain and thunderstorms before 11am. Partly sunny, with a steady temperature around 61. Windy, with a west wind 11 to 16 mph becoming north 18 to 23 mph in the morning. Winds could gust as high as 32 mph.

    High: 61 °F

    Windy. Slight
    Chance
    T-storms then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of rain between 4am and 5am. Mostly cloudy, with a low around 35. Breezy, with a north wind 14 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 35 °F

    Mostly Cloudy
    and Breezy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: Rain likely, mainly after 1pm. Mostly cloudy, with a high near 43. Breezy, with an east wind 14 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 43 °F

    Breezy.
    Chance Rain
    then Rain
    Likely

  • Wednesday Night

    Wednesday Night: Rain. Low around 33. Breezy, with an east northeast wind around 18 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    Low: 33 °F

    Rain and
    Breezy

  • Thursday

    Thursday: Rain. High near 52. Breezy. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 52 °F

    Rain and
    Breezy

  • Thursday Night

    Thursday Night: A 30 percent chance of rain before 1am. Mostly cloudy, with a low around 32.

    Low: 32 °F

    Chance Rain

  • Friday

    Friday: A 40 percent chance of rain and thunderstorms after 1pm. Partly sunny, with a high near 57. Breezy.

    High: 57 °F

    Partly Sunny
    then Chance
    T-storms and
    Breezy

  • Friday Night

    Friday Night: Rain and possibly a thunderstorm before 1am, then rain likely. Low around 38. Breezy. Chance of precipitation is 80%.

    Low: 38 °F

    Rain and
    Breezy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 56. South southwest wind 9 to 11 mph, with gusts as high as 20 mph.
Tuesday
A 20 percent chance of rain and thunderstorms before 11am. Partly sunny, with a steady temperature around 61. Windy, with a west wind 11 to 16 mph becoming north 18 to 23 mph in the morning. Winds could gust as high as 32 mph.
Tuesday Night
A slight chance of rain between 4am and 5am. Mostly cloudy, with a low around 35. Breezy, with a north wind 14 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Wednesday
Rain likely, mainly after 1pm. Mostly cloudy, with a high near 43. Breezy, with an east wind 14 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain. Low around 33. Breezy, with an east northeast wind around 18 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Thursday
Rain. High near 52. Breezy. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday Night
A 30 percent chance of rain before 1am. Mostly cloudy, with a low around 32.
Friday
A 40 percent chance of rain and thunderstorms after 1pm. Partly sunny, with a high near 57. Breezy.
Friday Night
Rain and possibly a thunderstorm before 1am, then rain likely. Low around 38. Breezy. Chance of precipitation is 80%.
Saturday
A 50 percent chance of rain. Mostly cloudy, with a high near 47. Windy.
Saturday Night
Mostly cloudy, with a low around 29. Windy.
Sunday
Mostly sunny, with a high near 49. Breezy.
Sunday Night
Mostly clear, with a low around 29.
Monday
Mostly sunny, with a high near 58.
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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:
10:22 pm CDT Mar 30, 2026
Forecast Valid:
12am CDT Mar 31, 2026-6pm CDT Apr 6, 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