Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

74°F

23°C

Humidity 69%
Wind Speed NE 9 mph
Barometer 30.10 in (1019.2 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 15 Apr 10:53 pm EDT
Extended Forecast for

Marathon FL

  • Tonight

    Tonight: Partly cloudy, with a low around 72. East wind 10 to 15 mph.

    Low: 72 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 81. East wind around 10 mph.

    High: 81 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 73. East wind 10 to 15 mph.

    Low: 73 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 82. Northeast wind around 10 mph.

    High: 82 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of showers.  Mostly clear, with a low around 75. East wind around 10 mph.  Chance of precipitation is 10%.

    Low: 75 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 75.

    Low: 75 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 74.

    Low: 74 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 72. East wind 10 to 15 mph.
Thursday
Mostly sunny, with a high near 81. East wind around 10 mph.
Thursday Night
Partly cloudy, with a low around 73. East wind 10 to 15 mph.
Friday
Mostly sunny, with a high near 82. Northeast wind around 10 mph.
Friday Night
A slight chance of showers. Mostly clear, with a low around 75. East wind around 10 mph. Chance of precipitation is 10%.
Saturday
Sunny, with a high near 83.
Saturday Night
Partly cloudy, with a low around 75.
Sunday
Mostly sunny, with a high near 83.
Sunday Night
Partly cloudy, with a low around 74.
Monday
Mostly sunny, with a high near 81.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 73. Breezy. Chance of precipitation is 20%.
Tuesday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 80. Windy. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 72. Windy. Chance of precipitation is 20%.
Wednesday
A slight chance of showers. Partly sunny, with a high near 79. Breezy. Chance of precipitation is 10%.
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ABOUT THIS FORECAST

 
Point Forecast:
Marathon FL
 24.72°N 81.07°W (Elev. 7 ft)
11:15 pm EDT Apr 15, 2026
11pm EDT Apr 15, 2026-6pm EDT Apr 22, 2026
 
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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