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.

A Few Clouds

87°F

31°C

Humidity 70%
Wind Speed SE 6 mph
Barometer 29.99 in (1015.5 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 13 Aug 6:53 pm EDT
Extended Forecast for

2 Miles SW Long Key FL

  • Tonight

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

    Low: 83 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms. Sunny, with a high near 87. East wind around 5 mph. Chance of precipitation is 30%.

    High: 87 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms. Mostly clear, with a low around 82. East wind 5 to 10 mph. Chance of precipitation is 20%.

    Low: 82 °F

    Slight Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms. Sunny, with a high near 87. East wind around 10 mph. Chance of precipitation is 30%.

    High: 87 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly clear, with a low around 83. East wind around 10 mph. Chance of precipitation is 30%.

    Low: 83 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms. Sunny, with a high near 87. Chance of precipitation is 30%.

    High: 87 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly clear, with a low around 82. Chance of precipitation is 30%.

    Low: 82 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms. Sunny, with a high near 87. Chance of precipitation is 30%.

    High: 87 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly clear, with a low around 82. Chance of precipitation is 30%.

    Low: 82 °F

    Chance
    Showers

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms. Mostly clear, with a low around 83. East wind around 5 mph. Chance of precipitation is 20%.
Thursday
A chance of showers and thunderstorms. Sunny, with a high near 87. East wind around 5 mph. Chance of precipitation is 30%.
Thursday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 82. East wind 5 to 10 mph. Chance of precipitation is 20%.
Friday
A chance of showers and thunderstorms. Sunny, with a high near 87. East wind around 10 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 83. East wind around 10 mph. Chance of precipitation is 30%.
Saturday
A chance of showers and thunderstorms. Sunny, with a high near 87. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 82. Chance of precipitation is 30%.
Sunday
A chance of showers and thunderstorms. Sunny, with a high near 87. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 82. Chance of precipitation is 30%.
Monday
A chance of showers and thunderstorms. Sunny, with a high near 88. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 82. Chance of precipitation is 30%.
Tuesday
A chance of showers and thunderstorms. Sunny, with a high near 88. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 82. Chance of precipitation is 30%.
Wednesday
A chance of showers and thunderstorms. Sunny, with a high near 87. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Long Key FL
 24.81°N 80.83°W (Elev. 0 ft)
Last Update:
7:15 pm EDT Aug 13, 2025
Forecast Valid:
7pm EDT Aug 13, 2025-6pm EDT Aug 20, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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