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.

Fair

10°F

-12°C

Humidity 100%
Wind Speed S 9 mph
Barometer 29.95 in
Dewpoint 10°F (-12°C)
Visibility 9.00 mi
Wind Chill-3°F (-19°C)
Last update 1 Dec 11:55 pm CST
Extended Forecast for

Marathon IA

  • Overnight

    Overnight: Patchy fog. Otherwise, partly cloudy, with a low around 3. West southwest wind around 5 mph.

    Low: 3 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 10am. Otherwise, increasing clouds, with a high near 27. South wind 5 to 10 mph.

    High: 27 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Tuesday Night

    Tuesday Night: A slight chance of freezing rain after midnight, mixing with snow after 3am. Cloudy, with a temperature rising to around 26 by midnight. South southwest wind 10 to 15 mph becoming north northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

    Low: 19 °F⇑

    Cloudy then
    Slight Chance
    Wintry Mix

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 6 by 5pm. Blustery, with a north northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 25 °F⇓

    Decreasing
    Clouds and
    Blustery

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around -15. North northwest wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 20 mph.

    Low: -15 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 16. South wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 16 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 6.

    Low: 6 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 29.

    High: 29 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 14.

    Low: 14 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Patchy fog. Otherwise, partly cloudy, with a low around 3. West southwest wind around 5 mph.
Tuesday
Patchy fog before 10am. Otherwise, increasing clouds, with a high near 27. South wind 5 to 10 mph.
Tuesday Night
A slight chance of freezing rain after midnight, mixing with snow after 3am. Cloudy, with a temperature rising to around 26 by midnight. South southwest wind 10 to 15 mph becoming north northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 6 by 5pm. Blustery, with a north northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Wednesday Night
Mostly clear, with a low around -15. North northwest wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 16. South wind 5 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Mostly cloudy, with a low around 6.
Friday
Mostly cloudy, with a high near 29.
Friday Night
Mostly cloudy, with a low around 14.
Saturday
A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 25.
Saturday Night
Mostly cloudy, with a low around 2.
Sunday
Partly sunny, with a high near 14.
Sunday Night
Mostly cloudy, with a low around 1.
Monday
A 20 percent chance of snow. Partly sunny, with a high near 27.
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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:
9:58 pm CST Dec 1, 2025
Forecast Valid:
12am CST Dec 2, 2025-6pm CST Dec 8, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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