National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

84°F

29°C

Humidity 77%
Wind Speed W 7 mph
Barometer 29.90 in (1012.4 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 1 Sep 3:53 pm EDT
Extended Forecast for

5 Miles WSW Long Key FL

  • Labor Day

    Labor Day: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 89. West wind around 10 mph. Chance of precipitation is 70%.

    High: 89 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 82. West wind around 10 mph. Chance of precipitation is 60%.

    Low: 82 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 88. West wind 5 to 10 mph. Chance of precipitation is 60%.

    High: 88 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 82. West wind 5 to 10 mph. Chance of precipitation is 50%.

    Low: 82 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Partly sunny, with a high near 88. West wind around 10 mph. Chance of precipitation is 50%.

    High: 88 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 81. Chance of precipitation is 50%.

    Low: 81 °F

    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 50%.

    High: 88 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 82. Chance of precipitation is 50%.

    Low: 82 °F

    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms. Partly sunny, with a high near 89. Chance of precipitation is 50%.

    High: 89 °F

    Chance
    T-storms

Detailed Forecast

Labor Day
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 89. West wind around 10 mph. Chance of precipitation is 70%.
Tonight
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 82. West wind around 10 mph. Chance of precipitation is 60%.
Tuesday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 88. West wind 5 to 10 mph. Chance of precipitation is 60%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 82. West wind 5 to 10 mph. Chance of precipitation is 50%.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. West wind around 10 mph. Chance of precipitation is 50%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 81. Chance of precipitation is 50%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 82. Chance of precipitation is 50%.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 89. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 82. Chance of precipitation is 50%.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 82. Chance of precipitation is 50%.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 50%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Long Key FL
 24.79°N 80.89°W (Elev. 0 ft)
Last Update:
4:15 pm EDT Sep 1, 2025
Forecast Valid:
4pm EDT Sep 1, 2025-6pm EDT Sep 7, 2025
 
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