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

57°F

14°C

Humidity 88%
Wind Speed SW 5 mph
Barometer 30.19 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 23 Jun 5:35 am CDT
Extended Forecast for

Marathon IA

  • Today

    Today: Partly sunny, with a high near 78. South southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 78 °F

    Partly Sunny

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms before 4am. Mostly cloudy, with a low around 58. West southwest wind 5 to 10 mph.

    Low: 58 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Partly sunny, then gradually becoming sunny, with a high near 81. West northwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 81 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 54. Northwest wind 5 to 10 mph.

    Low: 54 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly sunny, with a high near 77. North northeast wind around 5 mph.

    High: 77 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 55. East northeast wind around 5 mph.

    Low: 55 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 85. Breezy.

    High: 85 °F

    Partly Sunny
    then Partly
    Sunny and
    Breezy

Detailed Forecast

Today
Partly sunny, with a high near 78. South southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Tonight
A 50 percent chance of showers and thunderstorms before 4am. Mostly cloudy, with a low around 58. West southwest wind 5 to 10 mph.
Wednesday
Partly sunny, then gradually becoming sunny, with a high near 81. West northwest wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Increasing clouds, with a low around 54. Northwest wind 5 to 10 mph.
Thursday
Mostly sunny, with a high near 77. North northeast wind around 5 mph.
Thursday Night
Partly cloudy, with a low around 55. East northeast wind around 5 mph.
Friday
Mostly sunny, with a high near 78.
Friday Night
Partly cloudy, with a low around 60.
Saturday
Partly sunny, with a high near 85. Breezy.
Saturday Night
A chance of showers, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 69. Breezy. Chance of precipitation is 40%.
Sunday
Mostly sunny, with a high near 94. Breezy.
Sunday Night
Mostly clear, with a low around 71. Breezy.
Monday
Sunny and hot, with a high near 95. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marathon IA
 42.85°N 95°W (Elev. 1358 ft)
Last Update:
5:43 am CDT Jun 23, 2026
Forecast Valid:
5am CDT Jun 23, 2026-6pm CDT Jun 29, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation