National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Fair

0°F

-18°C

Humidity 83%
Wind Speed SW 7 mph
Barometer 30.11 in (1022.0 mb)
Dewpoint -4°F (-20°C)
Visibility 10.00 mi
Wind Chill-13°F (-25°C)
Last update 18 Jan 12:53 am CST
Extended Forecast for

Grundy Center IA

Cold Weather Advisory January 18, 09:00pm until January 19, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory

  • Overnight

    Overnight: Mostly cloudy, with a low around 1. Wind chill values as low as -10. Southwest wind around 8 mph.

    Low: 1 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 40 percent chance of snow, mainly between 10am and 5pm. Patchy blowing snow after 2pm. Cloudy, with a high near 21. Wind chill values as low as -5. Windy, with a south southwest wind 9 to 14 mph becoming northwest 23 to 28 mph in the afternoon. Winds could gust as high as 39 mph. New snow accumulation of less than a half inch possible.

    High: 21 °F

    Chance Snow
    and Patchy
    Blowing Snow

  • Sunday Night

    Sunday Night: A chance of flurries before 8pm. Patchy blowing snow. Mostly cloudy, with a low around -4. Wind chill values as low as -30. Windy, with a northwest wind 21 to 29 mph, with gusts as high as 41 mph.

    Low: -4 °F

    Chance
    Flurries and
    Patchy
    Blowing Snow

  • M.L.King Day

    M.L.King Day: Patchy blowing snow before 7am. Mostly sunny and cold, with a high near 8. Wind chill values as low as -25. Blustery, with a west northwest wind 15 to 20 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 8 °F

    Blustery.
    Patchy
    Blowing Snow
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 0. Southwest wind around 7 mph.

    Low: 0 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 24.

    High: 24 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 16.

    Low: 16 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 24. Blustery.

    High: 24 °F

    Partly Sunny
    then Partly
    Sunny and
    Blustery

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 8.

    Low: 8 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 1. Wind chill values as low as -10. Southwest wind around 8 mph.
Sunday
A 40 percent chance of snow, mainly between 10am and 5pm. Patchy blowing snow after 2pm. Cloudy, with a high near 21. Wind chill values as low as -5. Windy, with a south southwest wind 9 to 14 mph becoming northwest 23 to 28 mph in the afternoon. Winds could gust as high as 39 mph. New snow accumulation of less than a half inch possible.
Sunday Night
A chance of flurries before 8pm. Patchy blowing snow. Mostly cloudy, with a low around -4. Wind chill values as low as -30. Windy, with a northwest wind 21 to 29 mph, with gusts as high as 41 mph.
M.L.King Day
Patchy blowing snow before 7am. Mostly sunny and cold, with a high near 8. Wind chill values as low as -25. Blustery, with a west northwest wind 15 to 20 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 26 mph.
Monday Night
Partly cloudy, with a low around 0. Southwest wind around 7 mph.
Tuesday
Mostly sunny, with a high near 24.
Tuesday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 16.
Wednesday
Partly sunny, with a high near 24. Blustery.
Wednesday Night
Partly cloudy, with a low around 8.
Thursday
Mostly sunny, with a high near 25.
Thursday Night
Mostly cloudy, with a low around 11.
Friday
Partly sunny, with a high near 19.
Friday Night
Mostly cloudy, with a low around -2.
Saturday
Mostly cloudy and cold, with a high near 7.
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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:
10:46 pm CST Jan 17, 2026
Forecast Valid:
1am CST Jan 18, 2026-6pm CST Jan 24, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation