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

Tracking Weekend Storm Impacts

A storm and trailing cold front will continue to slowly move through the Gulf Coast and Southeast U.S. through this weekend with widespread rain showers and isolated thunderstorms. A fast-moving clipper storm may bring several inches of snow to the north-central Plains, Midwest, eastern Great Lakes, and Northeast regions this weekend. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Mostly Cloudy

N/A

Humidity NA
Wind Speed Calm
Barometer 29.97 in (1015.0 mb)
Dewpoint N/A
Visibility 10.00 mi
Last update 7 Dec 3:53 am EST
Extended Forecast for

Marathon FL

  • Overnight

    Overnight: A slight chance of showers. Mostly cloudy, with a low around 75. Southeast wind around 5 mph. Chance of precipitation is 10%.

    Low: 75 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers. Mostly sunny, with a high near 81. Southeast wind around 5 mph. Chance of precipitation is 20%.

    High: 81 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 75. South wind 5 to 10 mph. Chance of precipitation is 40%.

    Low: 75 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms. Partly sunny, with a high near 81. West wind 10 to 15 mph. Chance of precipitation is 40%.

    High: 81 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers. Mostly cloudy, with a low around 70. Northwest wind 10 to 15 mph becoming north after midnight. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers. Mostly cloudy, with a high near 77. Chance of precipitation is 30%.

    High: 77 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers. Mostly cloudy, with a low around 72. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers. Partly sunny, with a high near 77. Chance of precipitation is 20%.

    High: 77 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers. Mostly cloudy, with a low around 70. Chance of precipitation is 20%.

    Low: 70 °F

    Slight Chance
    Showers

Detailed Forecast

Overnight
A slight chance of showers. Mostly cloudy, with a low around 75. Southeast wind around 5 mph. Chance of precipitation is 10%.
Sunday
A slight chance of showers. Mostly sunny, with a high near 81. Southeast wind around 5 mph. Chance of precipitation is 20%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 75. South wind 5 to 10 mph. Chance of precipitation is 40%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 81. West wind 10 to 15 mph. Chance of precipitation is 40%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 70. Northwest wind 10 to 15 mph becoming north after midnight. Chance of precipitation is 30%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 77. Chance of precipitation is 30%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 72. Chance of precipitation is 30%.
Wednesday
A slight chance of showers. Partly sunny, with a high near 77. Chance of precipitation is 20%.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 70. Chance of precipitation is 20%.
Thursday
A slight chance of showers. Mostly sunny, with a high near 77. Chance of precipitation is 10%.
Thursday Night
A slight chance of showers. Partly cloudy, with a low around 72. Chance of precipitation is 20%.
Friday
A slight chance of showers. Partly sunny, with a high near 78. Chance of precipitation is 20%.
Friday Night
A slight chance of showers. Mostly cloudy, with a low around 70. Chance of precipitation is 20%.
Saturday
A slight chance of showers. Partly sunny, with a high near 77. 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 81.1°W (Elev. 0 ft)
Last Update:
3:15 am EST Dec 7, 2025
Forecast Valid:
4am EST Dec 7, 2025-6pm EST Dec 13, 2025
 
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