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

Storm System to Move Across the Ohio Valley to the Mid-Atlantic and Northeast

Isolated severe thunderstorms will be possible on Veterans Day across parts of the lower Ohio and western Tennessee Valleys. A developing storm will bring rain and gusty winds to the Mid-Atlantic and Northeast on Thursday, with the first accumulating snow likely in the higher elevations of the central Appalachians and interior Northeast. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

A Few Clouds

79°F

26°C

Humidity 77%
Wind Speed SE 6 mph
Barometer 29.95 in (1014.3 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 11 Nov 10:53 pm EST
Extended Forecast for

Marathon FL

  • Tonight

    Tonight: Partly cloudy, with a low around 77. South wind around 5 mph becoming calm.

    Low: 77 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers and thunderstorms. Partly sunny, with a high near 83. Southwest wind around 5 mph becoming west in the afternoon. Chance of precipitation is 20%.

    High: 83 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 74. West wind 5 to 10 mph. Chance of precipitation is 30%.

    Low: 74 °F

    Chance
    Showers

  • Friday

    Friday: A slight chance of showers. Partly sunny, with a high near 81. Northwest wind around 10 mph. Chance of precipitation is 10%.

    High: 81 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 66. North wind around 15 mph.

    Low: 66 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 68.

    Low: 68 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of showers. Partly sunny, with a high near 80. Chance of precipitation is 20%.

    High: 80 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers. Mostly cloudy, with a low around 74. Chance of precipitation is 30%.

    Low: 74 °F

    Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 77. South wind around 5 mph becoming calm.
Thursday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 83. Southwest wind around 5 mph becoming west in the afternoon. Chance of precipitation is 20%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 74. West wind 5 to 10 mph. Chance of precipitation is 30%.
Friday
A slight chance of showers. Partly sunny, with a high near 81. Northwest wind around 10 mph. Chance of precipitation is 10%.
Friday Night
Mostly cloudy, with a low around 66. North wind around 15 mph.
Saturday
Mostly sunny, with a high near 75.
Saturday Night
Mostly cloudy, with a low around 68.
Sunday
A slight chance of showers. Partly sunny, with a high near 80. Chance of precipitation is 20%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 74. Chance of precipitation is 30%.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 82. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 75. Chance of precipitation is 40%.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 81. Chance of precipitation is 30%.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 73. Chance of precipitation is 20%.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 81. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marathon FL
 24.72°N 81.07°W (Elev. 7 ft)
Last Update:
10:15 pm EST Nov 11, 2026
Forecast Valid:
10pm EST Nov 11, 2026-6pm EST Nov 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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