Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

80°F

27°C

Humidity 71%
Wind Speed E 9 mph
Barometer 30.03 in (1016.7 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 16 May 12:53 am EDT
Extended Forecast for

Marathon FL

  • Overnight

    Overnight: Mostly clear, with a low around 79. East wind around 10 mph.

    Low: 79 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 88. East wind 5 to 10 mph.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 79. East wind 10 to 15 mph.

    Low: 79 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 88. Southeast wind 5 to 10 mph.

    High: 88 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 80. East wind 10 to 15 mph.

    Low: 80 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 80.

    Low: 80 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 80.

    Low: 80 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 79. East wind around 10 mph.
Friday
Sunny, with a high near 88. East wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 79. East wind 10 to 15 mph.
Saturday
Sunny, with a high near 88. Southeast wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 80. East wind 10 to 15 mph.
Sunday
Sunny, with a high near 88.
Sunday Night
Mostly clear, with a low around 80.
Monday
Sunny, with a high near 88.
Monday Night
Mostly clear, with a low around 80.
Tuesday
Sunny, with a high near 88.
Tuesday Night
Mostly clear, with a low around 80.
Wednesday
A slight chance of showers. Sunny, with a high near 87. Chance of precipitation is 10%.
Wednesday Night
A slight chance of showers. Mostly clear, with a low around 80. Chance of precipitation is 10%.
Thursday
Sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
Marathon FL
 24.72°N 81.07°W (Elev. 7 ft)
12:15 am EDT May 16, 2025
1am EDT May 16, 2025-6pm EDT May 22, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database