National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Overcast

57°F

14°C

Humidity 93%
Wind Speed E 8 mph
Barometer 30.20 in (1022.8 mb)
Dewpoint 55°F (13°C)
Visibility 8.00 mi
Last update 15 Oct 2:53 am CDT
Extended Forecast for

Grundy Center IA

  • Overnight

    Overnight: A slight chance of showers, then a chance of showers and thunderstorms after 4am. Cloudy, with a steady temperature around 56. Light south southeast wind. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 56 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Cloudy, with a high near 66. East wind around 9 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 66 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 55. East wind around 10 mph.

    Low: 55 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 76. Breezy, with a southeast wind 11 to 16 mph, with gusts as high as 23 mph.

    High: 76 °F

    Slight Chance
    Showers and
    Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 60. South wind around 14 mph, with gusts as high as 21 mph.

    Low: 60 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 77. Breezy. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Breezy.
    Partly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 52. Chance of precipitation is 70%.

    Low: 52 °F

    Showers
    Likely

  • Saturday

    Saturday: A 20 percent chance of showers. Mostly sunny, with a high near 69.

    High: 69 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers before 1am. Partly cloudy, with a low around 42.

    Low: 42 °F

    Chance
    Showers

Detailed Forecast

Overnight
A slight chance of showers, then a chance of showers and thunderstorms after 4am. Cloudy, with a steady temperature around 56. Light south southeast wind. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers and thunderstorms. Cloudy, with a high near 66. East wind around 9 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 55. East wind around 10 mph.
Thursday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 76. Breezy, with a southeast wind 11 to 16 mph, with gusts as high as 23 mph.
Thursday Night
Partly cloudy, with a low around 60. South wind around 14 mph, with gusts as high as 21 mph.
Friday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 77. Breezy. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 52. Chance of precipitation is 70%.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 69.
Saturday Night
A 30 percent chance of showers before 1am. Partly cloudy, with a low around 42.
Sunday
Sunny, with a high near 62.
Sunday Night
Mostly clear, with a low around 42.
Monday
Sunny, with a high near 69. Breezy.
Monday Night
Mostly clear, with a low around 44.
Tuesday
Sunny, with a high near 66. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grundy Center IA
 42.36°N 92.76°W
Last Update:
2:26 am CDT Oct 15, 2025
Forecast Valid:
3am CDT Oct 15, 2025-6pm CDT Oct 21, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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