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

Hazardous Weather Conditions

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Partly Cloudy

85°F

29°C

Humidity 72%
Wind Speed E 14 mph
Barometer 30.12 in (1019.8 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 22 Jun 9:53 pm EDT
Extended Forecast for

Marathon FL

  • Tonight

    Tonight: A chance of showers and thunderstorms. Partly cloudy, with a low around 81. East wind 10 to 15 mph. Chance of precipitation is 40%.

    Low: 81 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms. Sunny, with a high near 89. East wind 10 to 15 mph. Chance of precipitation is 40%.

    High: 89 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly clear, with a low around 81. East wind around 15 mph. Chance of precipitation is 40%.

    Low: 81 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms. Sunny, with a high near 89. East wind 10 to 15 mph. Chance of precipitation is 40%.

    High: 89 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly clear, with a low around 81. East wind around 15 mph. Chance of precipitation is 40%.

    Low: 81 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Sunny, with a high near 89. Chance of precipitation is 40%.

    High: 89 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly clear, with a low around 80. Chance of precipitation is 40%.

    Low: 80 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms. Sunny, with a high near 88. Chance of precipitation is 50%.

    High: 88 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly clear, with a low around 81. Chance of precipitation is 30%.

    Low: 81 °F

    Chance
    Showers

Detailed Forecast

Tonight
A chance of showers and thunderstorms. Partly cloudy, with a low around 81. East wind 10 to 15 mph. Chance of precipitation is 40%.
Monday
A chance of showers and thunderstorms. Sunny, with a high near 89. East wind 10 to 15 mph. Chance of precipitation is 40%.
Monday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 81. East wind around 15 mph. Chance of precipitation is 40%.
Tuesday
A chance of showers and thunderstorms. Sunny, with a high near 89. East wind 10 to 15 mph. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 81. East wind around 15 mph. Chance of precipitation is 40%.
Wednesday
A chance of showers and thunderstorms. Sunny, with a high near 89. Chance of precipitation is 40%.
Wednesday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 80. Chance of precipitation is 40%.
Thursday
A chance of showers and thunderstorms. Sunny, with a high near 88. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 81. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 81. Chance of precipitation is 30%.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Saturday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 81. Chance of precipitation is 20%.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Marathon FL
 24.7°N 81.1°W (Elev. 3 ft)
Last Update:
9:54 pm EDT Jun 22, 2025
Forecast Valid:
9pm EDT Jun 22, 2025-6pm EDT Jun 29, 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