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

78°F

26°C

Humidity 85%
Wind Speed E 6 mph
Barometer 29.89 in (1012.0 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 6 Nov 12:53 am EST
Extended Forecast for

25 Miles NW Islamorada FL

  • Overnight

    Overnight: Mostly clear, with a low around 72. Calm wind.

    Low: 72 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 87. Calm wind becoming north around 5 mph in the afternoon.

    High: 87 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 87. Light north wind.

    High: 87 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 86. North wind 3 to 6 mph.

    High: 86 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 71. Northeast wind 3 to 5 mph.

    Low: 71 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 84. East wind 6 to 10 mph.

    High: 84 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 71. Northeast wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: 71 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 72. Calm wind.
Friday
Sunny, with a high near 87. Calm wind becoming north around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 72. Calm wind.
Saturday
Sunny, with a high near 87. Light north wind.
Saturday Night
Partly cloudy, with a low around 72. Calm wind.
Sunday
Mostly sunny, with a high near 86. North wind 3 to 6 mph.
Sunday Night
Partly cloudy, with a low around 71. Northeast wind 3 to 5 mph.
Monday
Mostly sunny, with a high near 84. East wind 6 to 10 mph.
Monday Night
Partly cloudy, with a low around 71. Northeast wind 6 to 10 mph, with gusts as high as 18 mph.
Tuesday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 84. Chance of precipitation is 20%.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Veterans Day
A 30 percent chance of showers. Mostly sunny, with a high near 83.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 70.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
25 Miles NW Islamorada FL
 25.2°N 80.86°W
Last Update:
3:02 pm EST Nov 5, 2026
Forecast Valid:
1am EST Nov 6, 2026-6pm EST Nov 12, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation