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

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

84°F

29°C

Humidity 72%
Wind Speed E 6 mph
Barometer 29.99 in (1015.6 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 16 Jun 8:53 pm EDT
Extended Forecast for

Marathon Shores FL

  • Tonight

    Tonight: Partly cloudy, with a low around 82. Southeast wind 5 to 10 mph.

    Low: 82 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms before 11am. Sunny, with a high near 88. Southeast wind 5 to 10 mph. Chance of precipitation is 10%.

    High: 88 °F

    Slight Chance
    T-storms then
    Sunny

  • Wednesday Night

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

    Low: 82 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers and thunderstorms. Sunny, with a high near 88. Southeast wind 5 to 10 mph. Chance of precipitation is 10%.

    High: 88 °F

    Slight Chance
    T-storms

  • Thursday Night

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

    Low: 82 °F

    Slight Chance
    T-storms

  • Juneteenth

    Juneteenth: A slight chance of showers and thunderstorms. Sunny, with a high near 88. Chance of precipitation is 10%.

    High: 88 °F

    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 82.

    Low: 82 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 82.

    Low: 82 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 82. Southeast wind 5 to 10 mph.
Wednesday
A slight chance of showers and thunderstorms before 11am. Sunny, with a high near 88. Southeast wind 5 to 10 mph. Chance of precipitation is 10%.
Wednesday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 82. Southeast wind 5 to 10 mph. Chance of precipitation is 10%.
Thursday
A slight chance of showers and thunderstorms. Sunny, with a high near 88. Southeast wind 5 to 10 mph. Chance of precipitation is 10%.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 82. East wind around 10 mph. Chance of precipitation is 10%.
Juneteenth
A slight chance of showers and thunderstorms. Sunny, with a high near 88. Chance of precipitation is 10%.
Friday Night
Mostly clear, with a low around 82.
Saturday
Sunny, with a high near 88.
Saturday Night
Mostly clear, with a low around 82.
Sunday
Sunny, with a high near 89.
Sunday Night
Mostly clear, with a low around 83.
Monday
Sunny, with a high near 89.
Monday Night
Mostly clear, with a low around 83.
Tuesday
A slight chance of showers. Sunny, with a high near 89. Chance of precipitation is 10%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marathon Shores FL
 24.72°N 81.05°W (Elev. 0 ft)
Last Update:
9:36 pm EDT Jun 16, 2026
Forecast Valid:
9pm EDT Jun 16, 2026-6pm EDT Jun 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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