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.

A Few Clouds

77°F

25°C

Humidity 54%
Wind Speed E 13 G 23 mph
Barometer 30.06 in (1017.8 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 22 Apr 6:53 pm EDT
Extended Forecast for

Marathon Shores FL

  • Tonight

    Tonight: A slight chance of showers after 8pm. Mostly cloudy, with a low around 72. East wind around 15 mph. Chance of precipitation is 20%.

    Low: 72 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms. Partly sunny, with a high near 82. East wind around 15 mph. Chance of precipitation is 30%.

    High: 82 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. East wind around 15 mph. Chance of precipitation is 40%.

    Low: 72 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers and thunderstorms. Mostly sunny, with a high near 83. East wind around 10 mph. Chance of precipitation is 40%.

    High: 83 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers. Partly cloudy, with a low around 74. East wind around 10 mph. Chance of precipitation is 20%.

    Low: 74 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers. Sunny, with a high near 85. Chance of precipitation is 10%.

    High: 85 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers after 8pm. Mostly cloudy, with a low around 72. East wind around 15 mph. Chance of precipitation is 20%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. East wind around 15 mph. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. East wind around 15 mph. Chance of precipitation is 40%.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 83. East wind around 10 mph. Chance of precipitation is 40%.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 74. East wind around 10 mph. Chance of precipitation is 20%.
Saturday
A slight chance of showers. Sunny, with a high near 85. Chance of precipitation is 10%.
Saturday Night
Mostly clear, with a low around 74.
Sunday
Sunny, with a high near 83.
Sunday Night
Mostly clear, with a low around 75.
Monday
Sunny, with a high near 84.
Monday Night
Mostly clear, with a low around 76.
Tuesday
Sunny, with a high near 83.
Tuesday Night
Mostly clear, with a low around 76.
Wednesday
Sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marathon Shores FL
 24.72°N 81.05°W (Elev. 0 ft)
Last Update:
6:15 pm EDT Apr 22, 2026
Forecast Valid:
6pm EDT Apr 22, 2026-6pm EDT Apr 29, 2026
 
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