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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

66°F

19°C

Humidity	78%
Wind Speed	SE 10 mph
Barometer	29.91 in (1012.6 mb)
Dewpoint	59°F (15°C)
Visibility	10.00 mi
Last update	16 Oct 8:53 pm CDT

More Information:

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

Extended Forecast for

2 Miles S Union IA

Tonight
Low: 61 °F
Increasing
Clouds
Friday
High: 79 °F
Breezy.
Partly Sunny
then Chance
Showers
Friday Night
Low: 53 °F
Chance
T-storms
Saturday
High: 75 °F
Mostly Sunny
Saturday Night
Low: 42 °F
Chance
Showers
Sunday
High: 63 °F
Sunny
Sunday Night
Low: 45 °F
Clear
Monday
High: 71 °F
Sunny
Monday Night
Low: 42 °F
Partly Cloudy

Detailed Forecast

Tonight

Increasing clouds, with a low around 61. Southeast wind 7 to 13 mph, with gusts as high as 18 mph.

Friday

A chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 79. Breezy, with a south wind 11 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday Night

A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 53. Southwest wind 5 to 9 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday

Mostly sunny, with a high near 75. Southwest wind 5 to 11 mph.

Saturday Night

A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 42. Northwest wind 11 to 13 mph, with gusts as high as 18 mph.

Sunday

Sunny, with a high near 63.

Sunday Night

Clear, with a low around 45.

Monday

Sunny, with a high near 71.

Monday Night

Partly cloudy, with a low around 42.