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.

Mostly Cloudy

75°F

24°C

Humidity 54%
Wind Speed E 15 G 24 mph
Barometer 30.11 in (1019.6 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 14 Apr 5:53 am EDT
Extended Forecast for

Marathon FLSimilar City Names

  • Today

    Today: A slight chance of showers. Partly sunny, with a high near 79. East wind around 15 mph. Chance of precipitation is 10%.

    High: 79 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A slight chance of showers. Partly cloudy, with a low around 72. Breezy, with an east wind 15 to 20 mph. Chance of precipitation is 10%.

    Low: 72 °F

    Slight Chance
    Showers and
    Breezy

  • Wednesday

    Wednesday: A slight chance of showers. Mostly sunny, with a high near 79. East wind around 15 mph. Chance of precipitation is 10%.

    High: 79 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: 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

  • Thursday

    Thursday: Mostly sunny, with a high near 80. East wind 10 to 15 mph.

    High: 80 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers. Mostly clear, with a low around 74. Chance of precipitation is 10%.

    Low: 74 °F

    Slight Chance
    Showers

  • Friday

    Friday: A slight chance of showers. Sunny, with a high near 82. Chance of precipitation is 10%.

    High: 82 °F

    Slight Chance
    Showers

  • Friday Night

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

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

Detailed Forecast

Today
A slight chance of showers. Partly sunny, with a high near 79. East wind around 15 mph. Chance of precipitation is 10%.
Tonight
A slight chance of showers. Partly cloudy, with a low around 72. Breezy, with an east wind 15 to 20 mph. Chance of precipitation is 10%.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 79. East wind around 15 mph. Chance of precipitation is 10%.
Wednesday Night
A slight chance of showers. Mostly clear, with a low around 73. East wind around 15 mph. Chance of precipitation is 10%.
Thursday
Mostly sunny, with a high near 80. East wind 10 to 15 mph.
Thursday Night
A slight chance of showers. Mostly clear, with a low around 74. Chance of precipitation is 10%.
Friday
A slight chance of showers. Sunny, with a high near 82. Chance of precipitation is 10%.
Friday Night
Mostly clear, with a low around 74.
Saturday
Sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 75.
Sunday
Mostly sunny, with a high near 83.
Sunday Night
Partly cloudy, with a low around 75.
Monday
Mostly sunny, with a high near 82.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marathon FLSimilar City Names
 24.72°N 81.07°W (Elev. 7 ft)
Last Update:
5:15 am EDT Apr 14, 2026
Forecast Valid:
6am EDT Apr 14, 2026-6pm EDT Apr 20, 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