National Weather Service

News Headlines

National Weather Service Flood Inundation Mapping Available for Iowa in September 2025

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Fair

33°F

1°C

Humidity	92%
Wind Speed	SE 3 mph
Barometer	30.16 in (1022.2 mb)
Dewpoint	31°F (-1°C)
Visibility	10.00 mi
Last update	13 Nov 5:53 am CST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Grundy Center IA

Today
High: 61 °F
Sunny
Tonight
Low: 39 °F
Mostly Clear
Friday
High: 67 °F
Sunny
Friday Night
Low: 50 °F
Mostly Cloudy
Saturday
High: 63 °F
Partly Sunny
then Sunny
and Breezy
Saturday Night
Low: 31 °F
Mostly Clear
Sunday
High: 51 °F
Sunny
Sunday Night
Low: 31 °F
Partly Cloudy
Monday
High: 49 °F
Mostly Sunny
then Chance
Rain

Detailed Forecast

Today

Sunny, with a high near 61. Light south southeast wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 20 mph.

Tonight

Mostly clear, with a low around 39. South wind 5 to 8 mph.

Friday

Sunny, with a high near 67. Light south wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 18 mph.

Friday Night

Mostly cloudy, with a low around 50. South southwest wind 11 to 13 mph, with gusts as high as 18 mph.

Saturday

Mostly sunny, with a high near 63. Breezy, with a west wind 11 to 17 mph becoming north northwest in the afternoon. Winds could gust as high as 24 mph.

Saturday Night

Mostly clear, with a low around 31.

Sunday

Sunny, with a high near 51.

Sunday Night

Partly cloudy, with a low around 31.

Monday

A 40 percent chance of rain after noon. Partly sunny, with a high near 49.

Monday Night

A 50 percent chance of rain. Mostly cloudy, with a low around 33.

Tuesday

Partly sunny, with a high near 46.