Hazardous Weather Conditions

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

82°F

28°C

Humidity 74%
Wind Speed S 5 mph
Barometer 30.00 in (1015.9 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 15 Jul 4:53 am EDT
Extended Forecast for

Marathon FL

  • Today

    Today: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am.  High near 87. South wind around 5 mph.  Chance of precipitation is 80%.

    High: 87 °F

    Showers

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 79. Southeast wind 5 to 10 mph.  Chance of precipitation is 60%.

    Low: 79 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm.  Partly sunny, with a high near 89. Southeast wind 10 to 15 mph.  Chance of precipitation is 70%.

    High: 89 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 82. East wind 10 to 15 mph.  Chance of precipitation is 40%.

    Low: 82 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms.  Partly sunny, with a high near 91. Southeast wind around 15 mph.  Chance of precipitation is 50%.

    High: 91 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms.  Partly cloudy, with a low around 82. Chance of precipitation is 30%.

    Low: 82 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers and thunderstorms.  Mostly sunny, with a high near 92. Chance of precipitation is 30%.

    High: 92 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms.  Mostly clear, with a low around 83. Chance of precipitation is 20%.

    Low: 83 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A slight chance of showers and thunderstorms.  Mostly sunny, with a high near 92. Chance of precipitation is 20%.

    High: 92 °F

    Slight Chance
    T-storms

Detailed Forecast

Today
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 87. South wind around 5 mph. Chance of precipitation is 80%.
Tonight
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 79. Southeast wind 5 to 10 mph. Chance of precipitation is 60%.
Wednesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 89. Southeast wind 10 to 15 mph. Chance of precipitation is 70%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 82. East wind 10 to 15 mph. Chance of precipitation is 40%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 91. Southeast wind around 15 mph. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 82. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Chance of precipitation is 30%.
Friday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 83. Chance of precipitation is 20%.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 92. Chance of precipitation is 20%.
Saturday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 82. Chance of precipitation is 20%.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 82. Chance of precipitation is 30%.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Marathon FL
 24.72°N 81.07°W (Elev. 7 ft)
6:15 am EDT Jul 15, 2025
6am EDT Jul 15, 2025-6pm EDT Jul 21, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database