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.

88°F

31°C

Humidity 73%
Wind Speed SE 6 mph
Barometer 30.10 in (1019.2 mb)
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index102°F (39°C)
Last update 22 Jun 6:53 pm EDT
Extended Forecast for

Marathon Shores FL

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 84. East wind 5 to 10 mph. Chance of precipitation is 10%.

    Low: 84 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 89. Southeast wind 5 to 10 mph.

    High: 89 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 83. East wind around 5 mph.

    Low: 83 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms. Sunny, with a high near 89. East wind around 5 mph. Chance of precipitation is 10%.

    High: 89 °F

    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms. Mostly clear, with a low around 83. East wind 5 to 10 mph. Chance of precipitation is 10%.

    Low: 83 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 83.

    Low: 83 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 83.

    Low: 83 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 84. East wind 5 to 10 mph. Chance of precipitation is 10%.
Tuesday
Mostly sunny, with a high near 89. Southeast wind 5 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 83. East wind around 5 mph.
Wednesday
A slight chance of showers and thunderstorms. Sunny, with a high near 89. East wind around 5 mph. Chance of precipitation is 10%.
Wednesday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 83. East wind 5 to 10 mph. Chance of precipitation is 10%.
Thursday
Sunny, with a high near 89.
Thursday Night
Mostly clear, with a low around 83.
Friday
Sunny, with a high near 89.
Friday Night
Mostly clear, with a low around 83.
Saturday
Sunny, with a high near 89.
Saturday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 83. Chance of precipitation is 20%.
Sunday
A slight chance of showers and thunderstorms. Sunny, with a high near 89. Chance of precipitation is 20%.
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. Sunny, with a high near 89. Chance of precipitation is 10%.
Basemap Options
Click map to change the forecast location
Loading map...
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 Jun 22, 2026
Forecast Valid:
7pm EDT Jun 22, 2026-6pm EDT Jun 29, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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