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.

Thunderstorm in Vicinity Light Rain

83°F

28°C

Humidity 82%
Wind Speed NE 6 mph
Barometer 30.14 in (1020.5 mb)
Dewpoint 77°F (25°C)
Visibility 8.00 mi
Heat Index92°F (33°C)
Last update 6 Aug 10:53 pm EDT
Extended Forecast for

Marathon FLSimilar City Names

  • Tonight

    Tonight: A chance of showers and thunderstorms. Partly cloudy, with a low around 81. East wind around 10 mph. Chance of precipitation is 50%.

    Low: 81 °F

    Chance
    T-storms

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 90. East wind around 5 mph. Chance of precipitation is 60%.

    High: 90 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 82. East wind around 5 mph. Chance of precipitation is 50%.

    Low: 82 °F

    Chance
    T-storms

  • Friday

    Friday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 90. Southeast wind 5 to 10 mph. Chance of precipitation is 60%.

    High: 90 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 82. Southeast wind 5 to 10 mph. Chance of precipitation is 50%.

    Low: 82 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms. Partly sunny, with a high near 90. Chance of precipitation is 50%.

    High: 90 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 82. Chance of precipitation is 40%.

    Low: 82 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 40%.

    High: 90 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 82. Chance of precipitation is 40%.

    Low: 82 °F

    Chance
    Showers

Detailed Forecast

Tonight
A chance of showers and thunderstorms. Partly cloudy, with a low around 81. East wind around 10 mph. Chance of precipitation is 50%.
Thursday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 90. East wind around 5 mph. Chance of precipitation is 60%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 82. East wind around 5 mph. Chance of precipitation is 50%.
Friday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 90. Southeast wind 5 to 10 mph. Chance of precipitation is 60%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 82. Southeast wind 5 to 10 mph. Chance of precipitation is 50%.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 90. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 82. Chance of precipitation is 40%.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 82. Chance of precipitation is 40%.
Monday
A chance of showers and thunderstorms. Sunny, with a high near 90. Chance of precipitation is 40%.
Monday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 83. Chance of precipitation is 40%.
Tuesday
A chance of showers and thunderstorms. Sunny, with a high near 90. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 82. Chance of precipitation is 40%.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 40%.
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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:
11:16 pm EDT Aug 6, 2025
Forecast Valid:
11pm EDT Aug 6, 2025-6pm EDT Aug 13, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation