Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11° N Lon: 92.92° W Elev: 971 ft.

Fair

45°F

7°C

Humidity 42%
Wind Speed Vrbl 5 mph
Barometer 30.41 in (1030.6 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 23 Mar 1:53 pm CDT
Detailed forecast for

Grundy County

Tonight
Sunny early, then becoming mostly cloudy. Lows in the lower 30s. Southeast winds 5 to 10 mph.
Tuesday
Mostly sunny. Highs in the upper 50s. South winds 5 to 10 mph.
Tuesday Night
Mostly cloudy. Lows in the lower 40s. South winds around 10 mph.
Wednesday
Partly sunny. Highs in the lower 70s. Southwest winds 5 to 10 mph.
Wednesday Night
Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 50s. South winds 5 to 10 mph.
Thursday
Partly sunny. A chance of showers in the afternoon. Highs in the upper 60s. Chance of rain 30 percent.
Thursday Night
Mostly cloudy and breezy. Much cooler with lows around 30.
Friday
Partly sunny in the morning, then clearing. Much cooler with highs in the mid 40s.
Friday Night
Mostly clear. Lows in the mid 20s.
Saturday
Sunny. Highs in the mid 50s.
Saturday Night
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 30s.
Sunday
Mostly sunny. Highs in the lower 60s.
Sunday Night
Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 40s.
Monday
Partly sunny. Highs in the mid 60s.



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227 PM CDT Mon Mar 23 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database