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

Strong Coastal Storm to Produce Heavy Rain and Strong Winds Across the Northeast; Severe Thunderstorms will Develop across the Central and Southern Plains

A Nor’easter will impact the northeast with heavy rainfall, flash flooding, and strong winds through tonight. Meanwhile, scattered severe thunderstorms with large hail, damaging wind gusts and isolated tornadoes are forecast across parts of the southern and central Plains from late today through tonight. Critical fire weather conditions for southern portions of the High Plains this afternoon. Read More >

Hazardous Weather Conditions

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

A Few Clouds

80°F

27°C

Humidity 87%
Wind Speed W 6 mph
Barometer 29.87 in (1011.6 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 26 Oct 7:53 pm EDT
Extended Forecast for

Marathon FL

  • Tonight

    Tonight: A slight chance of showers. Partly cloudy, with a low around 78. Northwest wind 5 to 10 mph. Chance of precipitation is 20%.

    Slight Chance
    Showers

    Low: 78 °F

  • Wednesday

    Wednesday: A slight chance of showers. Mostly sunny, with a high near 87. Northwest wind around 5 mph becoming west in the afternoon. Chance of precipitation is 10%.

    Slight Chance
    Showers

    High: 87 °F

  • Wednesday
    Night

    Wednesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 77. West wind around 5 mph becoming calm. Chance of precipitation is 30%.

    Chance
    Showers

    Low: 77 °F

  • Thursday

    Thursday: A chance of showers and thunderstorms. Partly sunny, with a high near 87. Breezy, with a southwest wind 15 to 20 mph. Chance of precipitation is 50%.

    Chance
    Showers and
    Breezy

    High: 87 °F

  • Thursday
    Night

    Thursday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 76. Breezy, with a southwest wind 15 to 20 mph. Chance of precipitation is 70%.

    Showers
    Likely and
    Breezy

    Low: 76 °F

  • Friday

    Friday: A chance of showers, mainly before 8am. Mostly sunny, with a high near 85. Breezy. Chance of precipitation is 30%.

    Chance
    Showers and
    Breezy

    High: 85 °F

  • Friday
    Night

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

    Slight Chance
    Showers and
    Breezy

    Low: 75 °F

  • Saturday

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

    Slight Chance
    Showers and
    Breezy

    High: 83 °F

  • Saturday
    Night

    Saturday Night: A slight chance of showers. Mostly clear, with a low around 72. Chance of precipitation is 10%.

    Slight Chance
    Showers

    Low: 72 °F

Detailed Forecast

Tonight
A slight chance of showers. Partly cloudy, with a low around 78. Northwest wind 5 to 10 mph. Chance of precipitation is 20%.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 87. Northwest wind around 5 mph becoming west in the afternoon. Chance of precipitation is 10%.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 77. West wind around 5 mph becoming calm. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 87. Breezy, with a southwest wind 15 to 20 mph. Chance of precipitation is 50%.
Thursday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 76. Breezy, with a southwest wind 15 to 20 mph. Chance of precipitation is 70%.
Friday
A chance of showers, mainly before 8am. Mostly sunny, with a high near 85. Breezy. Chance of precipitation is 30%.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 75. Breezy. Chance of precipitation is 20%.
Saturday
A slight chance of showers. Sunny, with a high near 83. Breezy. Chance of precipitation is 10%.
Saturday Night
A slight chance of showers. Mostly clear, with a low around 72. Chance of precipitation is 10%.
Sunday
Sunny, with a high near 83.
Sunday Night
Mostly clear, with a low around 72.
Monday
Sunny, with a high near 85.
Monday Night
A slight chance of showers. Mostly clear, with a low around 74. Chance of precipitation is 10%.
Tuesday
A slight chance of showers. Sunny, with a high near 83. Chance of precipitation is 20%.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Marathon FL
 24.72°N 81.07°W (Elev. 7 ft)
Last Update:
7:16 pm EDT Oct 26, 2021
Forecast Valid:
8pm EDT Oct 26, 2021-6pm EDT Nov 2, 2021
 
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