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

79°F

26°C

Humidity 56%
Wind Speed NE 16 G 26 mph
Barometer 30.14 in (1020.6 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 12 Apr 4:53 pm EDT
Extended Forecast for

Marathon Shores FL

  • This Afternoon

    This Afternoon: A slight chance of showers. Sunny, with a high near 80. East wind around 15 mph. Chance of precipitation is 10%.

    High: 80 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A slight chance of showers. Mostly clear, with a low around 73. East wind around 15 mph. Chance of precipitation is 10%.

    Low: 73 °F

    Slight Chance
    Showers

  • Monday

    Monday: A slight chance of showers. Sunny, with a high near 81. East wind around 15 mph. Chance of precipitation is 10%.

    High: 81 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers. Increasing clouds, with a low around 73. East wind around 15 mph. Chance of precipitation is 10%.

    Low: 73 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers. Mostly sunny, with a high near 81. East wind 10 to 15 mph. Chance of precipitation is 10%.

    High: 81 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of showers. Partly cloudy, with a low around 73. Chance of precipitation is 10%.

    Low: 73 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers. Mostly sunny, with a high near 81. Chance of precipitation is 10%.

    High: 81 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 73.

    Low: 73 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A slight chance of showers. Sunny, with a high near 80. East wind around 15 mph. Chance of precipitation is 10%.
Tonight
A slight chance of showers. Mostly clear, with a low around 73. East wind around 15 mph. Chance of precipitation is 10%.
Monday
A slight chance of showers. Sunny, with a high near 81. East wind around 15 mph. Chance of precipitation is 10%.
Monday Night
A slight chance of showers. Increasing clouds, with a low around 73. East wind around 15 mph. Chance of precipitation is 10%.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 81. East wind 10 to 15 mph. Chance of precipitation is 10%.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 73. Chance of precipitation is 10%.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 81. Chance of precipitation is 10%.
Wednesday Night
Partly cloudy, with a low around 73.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 75.
Friday
Sunny, with a high near 83.
Friday Night
Mostly clear, with a low around 75.
Saturday
Sunny, with a high near 84.
Saturday Night
Mostly clear, with a low around 75.
Sunday
Sunny, with a high near 83.
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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:
5:15 pm EDT Apr 12, 2026
Forecast Valid:
5pm EDT Apr 12, 2026-6pm EDT Apr 19, 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