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.

Fair

82°F

28°C

Humidity 65%
Wind Speed E 10 mph
Barometer 30.07 in (1018.0 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 28 Apr 1:53 pm EDT
Extended Forecast for

Marathon Shores FL

  • This Afternoon

    This Afternoon: Sunny, with a high near 84. East wind around 10 mph.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: A slight chance of showers after 8pm. Mostly clear, with a low around 76. East wind around 10 mph. Chance of precipitation is 10%.

    Low: 76 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 84. East wind 5 to 10 mph.

    High: 84 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76. Southeast wind 5 to 10 mph.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 84. Southeast wind around 5 mph.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 76.

    Low: 76 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 78.

    Low: 78 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 84. East wind around 10 mph.
Tonight
A slight chance of showers after 8pm. Mostly clear, with a low around 76. East wind around 10 mph. Chance of precipitation is 10%.
Wednesday
Sunny, with a high near 84. East wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 76. Southeast wind 5 to 10 mph.
Thursday
Sunny, with a high near 84. Southeast wind around 5 mph.
Thursday Night
Mostly clear, with a low around 76.
Friday
Sunny, with a high near 85.
Friday Night
Partly cloudy, with a low around 78.
Saturday
Sunny, with a high near 86.
Saturday Night
A slight chance of showers. Mostly clear, with a low around 78. Chance of precipitation is 10%.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85. Chance of precipitation is 20%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 76. Chance of precipitation is 50%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 30%.
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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:
1:15 pm EDT Apr 28, 2026
Forecast Valid:
2pm EDT Apr 28, 2026-6pm EDT May 4, 2026
 
Forecast Discussion
 
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Additional Resources

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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