Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

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

Snow Freezing Fog

22°F

-6°C

Humidity 92%
Wind Speed E 17 mph
Barometer 29.86 in (1012.9 mb)
Dewpoint 20°F (-7°C)
Visibility 0.50 mi
Wind Chill8°F (-13°C)
Last update 6 Dec 6:53 pm CST
Detailed forecast for

Grundy County

Tonight
Snow, mainly this evening. Snow may be heavy at times this evening. Additional snow accumulation of 4 to 8 inches. Total snow accumulation 6 to 7 inches. Lows around 8 above. Northeast winds 10 to 15 mph, becoming north after midnight. Chance of snow near 100 percent.
Sunday
Sunny. Highs around 12. North winds 10 to 15 mph.
Sunday Night
Mostly cloudy. Cold with lows around 1 below. Temperature rising to around 7 above after midnight. North winds around 5 mph, becoming southeast after midnight.
Monday
Mostly cloudy in the morning, then becoming partly sunny. Highs in the mid 20s. South winds 10 to 15 mph.
Monday Night
Mostly cloudy. Not as cool with lows around 16. Temperature rising into the mid 20s after midnight. Southwest winds 10 to 15 mph.
Tuesday
Partly sunny in the morning, then becoming mostly cloudy. Highs in the upper 30s.
Tuesday Night
Mostly cloudy. A chance of rain in the evening. Lows in the lower 20s. Chance of rain 40 percent.
Wednesday
Mostly cloudy. Highs in the upper 20s.
Wednesday Night
Mostly cloudy. A slight chance of snow in the evening, then a chance of snow after midnight. Lows around 10 above. Chance of snow 30 percent.
Thursday
Mostly cloudy. A chance of snow, mainly in the morning. Highs in the lower 20s. Chance of snow 30 percent.
Thursday Night
Mostly cloudy. Lows around zero.
Friday
Partly sunny. Highs around 10 above.
Friday Night
Mostly cloudy. Cold with lows 5 below to 10 below zero. Wind chill values as low as 25 below.
Saturday
Mostly sunny. Highs 5 to 10 above. Wind chill values as low as 25 below.



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652 PM CST Sat Dec 6 2025
 
 

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