Hazardous Weather Conditions
Current conditions at
Marshalltown, Marshalltown Municipal Airport (KMIW)
Lat: 42.11°NLon: 92.92°WElev: 971ft.
Fog
37°F
3°C
| Humidity | 96% |
| Wind Speed | SE 13 mph |
| Barometer | 29.86 in (1011.8 mb) |
| Dewpoint | 36°F (2°C) |
| Visibility | 0.50 mi |
| Wind Chill | 29°F (-2°C) |
| Last update | 27 Dec 7:53 am CST |
Extended Forecast for
Grundy Center IA
Dense Fog Advisory December 27, 08:19am until December 27, 12:00pm
NOW until 12:00pm Sat

Dense Fog Advisory
Today

High: 45 °F
Dense Fog
Tonight
Low: 38 °F
Patchy Fog
then Chance
Rain and
Areas FogSunday

High: 40 °F⇓
Wintry Mix
and Patchy
Blowing SnowSunday Night
Low: 7 °F
Chance Snow
and Patchy
Blowing SnowMonday
High: 13 °F
Windy. Patchy
Blowing Snow
then Mostly
SunnyMonday Night
Low: 6 °F
Mostly Clear
and Blustery
then Mostly
ClearTuesday

High: 29 °F
Mostly Sunny
Tuesday Night

Low: 18 °F
Mostly Cloudy
Detailed Forecast
Today
Widespread dense fog before 2pm, then patchy dense fog after 5pm. Otherwise, cloudy, with a high near 45. South southeast wind 9 to 14 mph, with gusts as high as 20 mph.
Tonight
A 30 percent chance of rain after 5am. Patchy fog. Otherwise, cloudy, with a low around 38. Southeast wind 5 to 9 mph becoming light and variable.
Sunday
Rain and snow, possibly mixed with sleet before 1pm, then snow, possibly mixed with sleet between 1pm and 3pm, then snow after 3pm. Patchy blowing snow after 1pm. Areas of fog before 7am. Temperature falling to around 18 by 5pm. Wind chill values as low as zero. Windy, with a northwest wind 9 to 19 mph increasing to 21 to 31 mph in the afternoon. Winds could gust as high as 44 mph. Chance of precipitation is 90%. New snow and sleet accumulation of less than one inch possible.
Sunday Night
A 50 percent chance of snow before midnight. Patchy blowing snow after 10pm. Mostly cloudy, with a low around 7. Wind chill values as low as -15. Windy, with a northwest wind 31 to 33 mph, with gusts as high as 43 mph. New snow accumulation of less than a half inch possible.
Monday
Patchy blowing snow before noon. Partly sunny, with a high near 13. Windy, with a northwest wind 21 to 30 mph, with gusts as high as 38 mph.
Monday Night
Mostly clear, with a low around 6. Blustery.
Tuesday
Mostly sunny, with a high near 29.
Tuesday Night
Mostly cloudy, with a low around 18.
Wednesday
Mostly cloudy, with a high near 27.
Wednesday Night
Mostly cloudy, with a low around 3.
New Year's Day
Sunny, with a high near 12.
Thursday Night
Mostly clear, with a low around 0.
Friday
Mostly sunny, with a high near 18.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Grundy Center IA
42.36°N 92.76°W
42.36°N 92.76°W
7:16 am CST Dec 27, 2025
8am CST Dec 27, 2025-6pm CST Jan 2, 2026



