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

Hazardous Weather Conditions

Current conditions at

Storm Lake (KSLB)

Lat: 42.6°NLon: 95.23°WElev: 1489ft.

Fog

36°F

2°C

Humidity 100%
Wind Speed SE 8 mph
Barometer 29.78 in
Dewpoint 36°F (2°C)
Visibility 0.15 mi
Wind Chill30°F (-1°C)
Last update 27 Dec 3:15 am CST
Extended Forecast for

Marathon IA

Dense Fog Advisory December 27, 03:27am until December 27, 09:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory December 27, 03:27am until December 27, 09:00am

    NOW until 9:00am Sat

    Dense Fog Advisory

  • Overnight

    Low: 33 °F

    Dense Fog

  • Saturday

    Saturday: Widespread dense fog, mainly before 10am. Otherwise, mostly cloudy, with a high near 48. South wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 48 °F

    Dense Fog
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: A 30 percent chance of rain after 3am. Widespread dense fog, mainly between 8pm and 3am. Otherwise, mostly cloudy, with a low around 22. South wind 5 to 10 mph becoming north 10 to 15 mph after midnight. Winds could gust as high as 25 mph.

    Low: 22 °F

    Patchy Fog
    then Chance
    Rain and
    Dense Fog

  • Sunday

    Sunday: Freezing rain before 7am, then snow and sleet between 7am and 8am, then snow after 8am. Widespread blowing snow, mainly after 4pm. Temperature falling to around 12 by 5pm. Windy, with a northwest wind 20 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. New snow and sleet accumulation of around 2 inches.

    High: 33 °F⇓

    Wintry Mix
    and Blowing
    Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before midnight. Areas of blowing snow. Mostly cloudy, with a low around 4. Windy, with a northwest wind 25 to 30 mph, with gusts as high as 40 mph.

    Low: 4 °F

    Slight Chance
    Snow and
    Areas Blowing
    Snow

  • Monday

    Monday: Patchy blowing snow before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 14. Blustery, with a northwest wind 15 to 25 mph, with gusts as high as 35 mph.

    High: 14 °F

    Patchy
    Blowing Snow
    and Blustery

  • Monday Night

    Monday Night: Mostly clear, with a low around 6.

    Low: 6 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

Detailed Forecast

Overnight
Widespread dense fog. Otherwise, mostly cloudy, with a low around 33. South southeast wind around 10 mph.
Saturday
Widespread dense fog, mainly before 10am. Otherwise, mostly cloudy, with a high near 48. South wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday Night
A 30 percent chance of rain after 3am. Widespread dense fog, mainly between 8pm and 3am. Otherwise, mostly cloudy, with a low around 22. South wind 5 to 10 mph becoming north 10 to 15 mph after midnight. Winds could gust as high as 25 mph.
Sunday
Freezing rain before 7am, then snow and sleet between 7am and 8am, then snow after 8am. Widespread blowing snow, mainly after 4pm. Temperature falling to around 12 by 5pm. Windy, with a northwest wind 20 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. New snow and sleet accumulation of around 2 inches.
Sunday Night
A 20 percent chance of snow before midnight. Areas of blowing snow. Mostly cloudy, with a low around 4. Windy, with a northwest wind 25 to 30 mph, with gusts as high as 40 mph.
Monday
Patchy blowing snow before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 14. Blustery, with a northwest wind 15 to 25 mph, with gusts as high as 35 mph.
Monday Night
Mostly clear, with a low around 6.
Tuesday
Mostly sunny, with a high near 31.
Tuesday Night
Mostly cloudy, with a low around 17.
Wednesday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 27.
Wednesday Night
Mostly cloudy, with a low around 2.
New Year's Day
Sunny, with a high near 12.
Thursday Night
Mostly clear, with a low around 2.
Friday
Mostly sunny, with a high near 21.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marathon IA
 42.85°N 94.97°W (Elev. 1375 ft)
Last Update:
3:18 am CST Dec 27, 2025
Forecast Valid:
3am CST Dec 27, 2025-6pm CST Jan 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation