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 75%
Wind Speed E 10 mph
Barometer 30.08 in (1018.5 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 26 Jun 1:53 am EDT
Extended Forecast for

Marathon FLSimilar City Names

  • Overnight

    Overnight: A chance of showers and thunderstorms. Partly cloudy, with a low around 82. East wind around 10 mph. Chance of precipitation is 30%.

    Low: 82 °F

    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms. Sunny, with a high near 90. Southeast wind around 10 mph. Chance of precipitation is 30%.

    High: 90 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly clear, with a low around 83. East wind around 10 mph. Chance of precipitation is 30%.

    Low: 83 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms. Sunny, with a high near 89. East wind around 10 mph. Chance of precipitation is 30%.

    High: 89 °F

    Chance
    T-storms

  • Saturday Night

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

    Low: 82 °F

    Chance
    T-storms

  • Sunday

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

    High: 89 °F

    Chance
    T-storms

  • Sunday Night

    Sunday 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

  • Monday

    Monday: A slight chance of showers and thunderstorms. Sunny, with a high near 89. Chance of precipitation is 20%.

    High: 89 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly clear, with a low around 82. Chance of precipitation is 30%.

    Low: 82 °F

    Chance
    T-storms

Detailed Forecast

Overnight
A chance of showers and thunderstorms. Partly cloudy, with a low around 82. East wind around 10 mph. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms. Sunny, with a high near 90. Southeast wind around 10 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 83. East wind around 10 mph. Chance of precipitation is 30%.
Saturday
A chance of showers and thunderstorms. Sunny, with a high near 89. East wind around 10 mph. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 82. East wind around 10 mph. Chance of precipitation is 40%.
Sunday
A chance of showers and thunderstorms. Sunny, with a high near 89. Chance of precipitation is 40%.
Sunday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 83. Chance of precipitation is 20%.
Monday
A slight chance of showers and thunderstorms. Sunny, with a high near 89. Chance of precipitation is 20%.
Monday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 82. Chance of precipitation is 30%.
Tuesday
A slight chance of showers and thunderstorms. Sunny, with a high near 89. Chance of precipitation is 10%.
Tuesday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 82. Chance of precipitation is 20%.
Wednesday
A slight chance of showers and thunderstorms. Sunny, with a high near 89. Chance of precipitation is 10%.
Wednesday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 82. Chance of precipitation is 30%.
Thursday
A slight chance of showers and thunderstorms. Sunny, with a high near 89. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
Marathon FLSimilar City Names
 24.72°N 81.07°W (Elev. 7 ft)
Last Update:
2:15 am EDT Jun 26, 2026
Forecast Valid:
2am EDT Jun 26, 2026-6pm EDT Jul 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation