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

Atmospheric River in the West; Strong Winds in the Northeast

A strong atmospheric river will continue moderate to heavy rainfall with possible flooding, gusty to high winds, and mountain snows for parts of the Northwest U.S. today into Thursday. Additional impacts are likely into Friday with a cold front. A fast-moving storm system will cross the Northeast U.S. today into Thursday with gusty to high winds and areas of rain and high elevation snow showers. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Partly Cloudy

79°F

26°C

Humidity 79%
Wind Speed NE 9 mph
Barometer 30.09 in (1018.8 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 5 Nov 2:53 pm EST
Extended Forecast for

Marathon FLSimilar City Names

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 79. East wind around 10 mph.

    High: 79 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 74. Northeast wind around 10 mph.

    Low: 74 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 79. East wind 5 to 10 mph.

    High: 79 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 74. East wind 5 to 10 mph.

    Low: 74 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of showers. Partly sunny, with a high near 82. East wind around 5 mph. Chance of precipitation is 20%.

    High: 82 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers. Partly cloudy, with a low around 75. Chance of precipitation is 20%.

    Low: 75 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers. Sunny, with a high near 83. Chance of precipitation is 20%.

    High: 83 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76.

    Low: 76 °F

    Mostly Clear

  • Sunday

    Sunday: A slight chance of showers. Sunny, with a high near 83. Chance of precipitation is 10%.

    High: 83 °F

    Slight Chance
    Showers

Detailed Forecast

This Afternoon
Partly sunny, with a high near 79. East wind around 10 mph.
Tonight
Mostly cloudy, with a low around 74. Northeast wind around 10 mph.
Thursday
Partly sunny, with a high near 79. East wind 5 to 10 mph.
Thursday Night
Mostly cloudy, with a low around 74. East wind 5 to 10 mph.
Friday
A slight chance of showers. Partly sunny, with a high near 82. East wind around 5 mph. Chance of precipitation is 20%.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 75. Chance of precipitation is 20%.
Saturday
A slight chance of showers. Sunny, with a high near 83. Chance of precipitation is 20%.
Saturday Night
Mostly clear, with a low around 76.
Sunday
A slight chance of showers. Sunny, with a high near 83. Chance of precipitation is 10%.
Sunday Night
A slight chance of showers. Mostly clear, with a low around 74. Chance of precipitation is 10%.
Monday
A slight chance of showers. Partly sunny, with a high near 81. Chance of precipitation is 10%.
Monday Night
A slight chance of showers. Mostly cloudy, with a low around 67. Windy. Chance of precipitation is 10%.
Veterans Day
Partly sunny, with a high near 77. Windy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marathon FLSimilar City Names
 24.72°N 81.07°W (Elev. 7 ft)
Last Update:
3:15 pm EST Nov 5, 2025
Forecast Valid:
3pm EST Nov 5, 2025-6pm EST Nov 11, 2025
 
Forecast Discussion
 
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Additional Resources

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