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

86°F

30°C

Humidity 75%
Wind Speed NE 3 mph
Barometer 30.03 in (1016.9 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 13 Aug 7:53 pm EDT
Extended Forecast for

Islamorada FL

  • Tonight

    Tonight: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 83. East wind 5 to 10 mph. Chance of precipitation is 20%.

    Low: 83 °F

    Slight Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms. Sunny, with a high near 89. East wind 5 to 10 mph. Chance of precipitation is 30%.

    High: 89 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 83. East wind around 10 mph. Chance of precipitation is 40%.

    Low: 83 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Southeast wind 5 to 10 mph. Chance of precipitation is 40%.

    High: 88 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms. Mostly clear, with a low around 83. East wind around 10 mph. Chance of precipitation is 10%.

    Low: 83 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 84.

    Low: 84 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 83.

    Low: 83 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 83. East wind 5 to 10 mph. Chance of precipitation is 20%.
Friday
A chance of showers and thunderstorms. Sunny, with a high near 89. East wind 5 to 10 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 83. East wind around 10 mph. Chance of precipitation is 40%.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Southeast wind 5 to 10 mph. Chance of precipitation is 40%.
Saturday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 83. East wind around 10 mph. Chance of precipitation is 10%.
Sunday
Sunny, with a high near 89.
Sunday Night
Mostly clear, with a low around 84.
Monday
Sunny, with a high near 89.
Monday Night
Mostly clear, with a low around 83.
Tuesday
Sunny, with a high near 89.
Tuesday Night
Mostly clear, with a low around 83.
Wednesday
Sunny, with a high near 88.
Wednesday Night
Partly cloudy, with a low around 83.
Thursday
Mostly sunny, with a high near 89.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Islamorada FL
 24.93°N 80.64°W (Elev. 0 ft)
Last Update:
8:15 pm EDT Aug 13, 2026
Forecast Valid:
8pm EDT Aug 13, 2026-6pm EDT Aug 20, 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