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Hazardous Weather Conditions

Current conditions at

Storm Lake (KSLB)

Lat: 42.6°NLon: 95.23°WElev: 1489ft.

Fair and Breezy

93°F

34°C

Humidity 50%
Wind Speed S 24 G 35 mph
Barometer 29.60 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index101°F (38°C)
Last update 20 Jun 6:35 pm CDT
Extended Forecast for

Marathon IA

Extreme Heat Warning until June 22, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning until June 22, 09:00pm

    NOW until 9:00pm Sun

    Extreme Heat Warning

  • Tonight

    Low: 76 °F

    Mostly Clear
    and Breezy

  • Saturday

    Saturday: Sunny and hot, with a high near 99. Heat index values as high as 110. Windy, with a south southwest wind 25 to 30 mph, with gusts as high as 40 mph.

    High: 99 °F

    Hot and Windy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76. Breezy, with a south wind 20 to 25 mph, with gusts as high as 35 mph.

    Low: 76 °F

    Mostly Clear
    and Breezy

  • Sunday

    Sunday: Sunny and hot, with a high near 97. Heat index values as high as 104. Windy, with a south wind 20 to 30 mph, with gusts as high as 40 mph.

    High: 97 °F

    Hot and Windy

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 71 °F

    Chance
    T-storms and
    Breezy

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 87. Southwest wind around 15 mph becoming north in the afternoon. Winds could gust as high as 25 mph.

    High: 87 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 61. Chance of precipitation is 80%.

    Low: 61 °F

    Showers

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 78. Chance of precipitation is 80%.

    High: 78 °F

    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 76. Breezy, with a south wind around 25 mph, with gusts as high as 35 mph.
Saturday
Sunny and hot, with a high near 99. Heat index values as high as 110. Windy, with a south southwest wind 25 to 30 mph, with gusts as high as 40 mph.
Saturday Night
Mostly clear, with a low around 76. Breezy, with a south wind 20 to 25 mph, with gusts as high as 35 mph.
Sunday
Sunny and hot, with a high near 97. Heat index values as high as 104. Windy, with a south wind 20 to 30 mph, with gusts as high as 40 mph.
Sunday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Monday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 87. Southwest wind around 15 mph becoming north in the afternoon. Winds could gust as high as 25 mph.
Monday Night
Showers and possibly a thunderstorm. Low around 61. Chance of precipitation is 80%.
Tuesday
Showers and possibly a thunderstorm. High near 78. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 65. Chance of precipitation is 90%.
Wednesday
Showers and possibly a thunderstorm. High near 81. Chance of precipitation is 90%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 63. Chance of precipitation is 80%.
Thursday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
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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:
6:31 pm CDT Jun 20, 2025
Forecast Valid:
6pm CDT Jun 20, 2025-6pm CDT Jun 27, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation