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

3°F

-16°C

Humidity 79%
Wind Speed W 9 mph
Barometer 30.08 in (1020.9 mb)
Dewpoint -2°F (-19°C)
Visibility 10.00 mi
Wind Chill-11°F (-24°C)
Last update 18 Jan 2:53 am CST
Extended Forecast for

Grundy Center IA

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

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 2. Wind chill values as low as -10. Calm wind becoming south southwest 5 to 8 mph.

    Low: 2 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 50 percent chance of snow after 11am. Patchy blowing snow after 2pm. Cloudy, with a high near 19. Wind chill values as low as -10. Windy, with a southwest wind 10 to 15 mph becoming northwest 21 to 26 mph in the afternoon. Winds could gust as high as 37 mph. New snow accumulation of less than a half inch possible.

    High: 19 °F

    Chance Snow
    and Patchy
    Blowing Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before 7pm. Patchy blowing snow. Mostly cloudy, with a low around -4. Wind chill values as low as -25. Windy, with a northwest wind 22 to 31 mph, with gusts as high as 40 mph.

    Low: -4 °F

    Slight Chance
    Snow and
    Patchy
    Blowing Snow

  • M.L.King Day

    M.L.King Day: Mostly sunny and cold, with a high near 9. Wind chill values as low as -25. Windy, with a northwest wind 16 to 21 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 9 °F

    Cold and
    Windy

  • Monday Night

    Monday Night: Partly cloudy, with a low around -1. West wind around 7 mph.

    Low: -1 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 23.

    High: 23 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 15.

    Low: 15 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of snow after noon. Partly sunny, with a high near 25. Breezy.

    High: 25 °F

    Partly Sunny
    then Slight
    Chance Snow
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 7.

    Low: 7 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 2. Wind chill values as low as -10. Calm wind becoming south southwest 5 to 8 mph.
Sunday
A 50 percent chance of snow after 11am. Patchy blowing snow after 2pm. Cloudy, with a high near 19. Wind chill values as low as -10. Windy, with a southwest wind 10 to 15 mph becoming northwest 21 to 26 mph in the afternoon. Winds could gust as high as 37 mph. New snow accumulation of less than a half inch possible.
Sunday Night
A 20 percent chance of snow before 7pm. Patchy blowing snow. Mostly cloudy, with a low around -4. Wind chill values as low as -25. Windy, with a northwest wind 22 to 31 mph, with gusts as high as 40 mph.
M.L.King Day
Mostly sunny and cold, with a high near 9. Wind chill values as low as -25. Windy, with a northwest wind 16 to 21 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 28 mph.
Monday Night
Partly cloudy, with a low around -1. West wind around 7 mph.
Tuesday
Mostly sunny, with a high near 23.
Tuesday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 15.
Wednesday
A 20 percent chance of snow after noon. Partly sunny, with a high near 25. Breezy.
Wednesday Night
Mostly cloudy, with a low around 7.
Thursday
Mostly sunny, with a high near 24.
Thursday Night
Mostly cloudy, with a low around 12.
Friday
Partly sunny, with a high near 18.
Friday Night
Mostly cloudy, with a low around -1.
Saturday
Partly sunny and cold, with a high near 5.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grundy Center IA
 42.36°N 92.76°W
Last Update:
3:01 am CST Jan 18, 2026
Forecast Valid:
3am CST Jan 18, 2026-6pm CST Jan 24, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation