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.

Fair

42°F

6°C

Humidity 65%
Wind Speed S 8 mph
Barometer 30.02 in (1017.4 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 12 Jan 5:53 pm CST
Extended Forecast for

Grundy Center IA

  • Tonight

    Tonight: Partly cloudy, with a low around 34. Southwest wind 5 to 15 mph, with gusts as high as 22 mph.

    Low: 34 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 48. Breezy, with a west wind 16 to 20 mph, with gusts as high as 31 mph.

    High: 48 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 22. Windy, with a northwest wind 15 to 24 mph, with gusts as high as 32 mph.

    Low: 22 °F

    Mostly Cloudy
    and Windy

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 21 by 5pm. Wind chill values as low as 5. Windy, with a north northwest wind 18 to 25 mph, with gusts as high as 36 mph.

    High: 25 °F⇓

    Decreasing
    Clouds and
    Windy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 11. Blustery, with a north northwest wind 11 to 16 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 22 mph.

    Low: 11 °F

    Mostly Clear
    and Blustery
    then Mostly
    Clear

  • Thursday

    Thursday: A 30 percent chance of snow after noon. Partly sunny, with a high near 30.

    High: 30 °F

    Partly Sunny
    then Chance
    Snow

  • Thursday Night

    Thursday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 24. Blustery.

    Low: 24 °F

    Chance Snow
    and Blustery

  • Friday

    Friday: A 40 percent chance of snow. Mostly cloudy, with a high near 32. Windy.

    High: 32 °F

    Chance Snow
    and Windy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 6. Windy.

    Low: 6 °F

    Mostly Cloudy
    and Windy

Detailed Forecast

Tonight
Partly cloudy, with a low around 34. Southwest wind 5 to 15 mph, with gusts as high as 22 mph.
Tuesday
Partly sunny, with a high near 48. Breezy, with a west wind 16 to 20 mph, with gusts as high as 31 mph.
Tuesday Night
Mostly cloudy, with a low around 22. Windy, with a northwest wind 15 to 24 mph, with gusts as high as 32 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 21 by 5pm. Wind chill values as low as 5. Windy, with a north northwest wind 18 to 25 mph, with gusts as high as 36 mph.
Wednesday Night
Mostly clear, with a low around 11. Blustery, with a north northwest wind 11 to 16 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 22 mph.
Thursday
A 30 percent chance of snow after noon. Partly sunny, with a high near 30.
Thursday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 24. Blustery.
Friday
A 40 percent chance of snow. Mostly cloudy, with a high near 32. Windy.
Friday Night
Mostly cloudy, with a low around 6. Windy.
Saturday
Mostly cloudy, with a high near 14. Blustery.
Saturday Night
Mostly cloudy, with a low around 0.
Sunday
Mostly sunny, with a high near 16.
Sunday Night
Partly cloudy, with a low around 4.
M.L.King Day
Mostly sunny, with a high near 21.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grundy Center IA
 42.36°N 92.76°W
Last Update:
5:06 pm CST Jan 12, 2026
Forecast Valid:
5pm CST Jan 12, 2026-6pm CST Jan 19, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation