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

75°F

24°C

Humidity 90%
Wind Speed NE 5 mph
Barometer 29.89 in (1012.2 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 7 Nov 5:53 am EST
Extended Forecast for

23 Miles NNW Long Key FL

  • Today

    Today: Sunny, with a high near 85. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 85 °F

    Sunny

  • Tonight

    Tonight: A 20 percent chance of showers before 10pm. Partly cloudy, with a low around 72. Calm wind becoming north around 5 mph after midnight.

    Low: 72 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 84. North wind around 6 mph becoming light and variable in the afternoon.

    High: 84 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 72. Northeast wind 3 to 6 mph.

    Low: 72 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 84. East wind 6 to 8 mph.

    High: 84 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 71. Northeast wind around 8 mph.

    Low: 71 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83. East wind 8 to 10 mph.

    High: 83 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 73. Northeast wind 7 to 10 mph.

    Low: 73 °F

    Mostly Cloudy

  • Veterans Day

    Veterans Day: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. Northeast wind 5 to 7 mph becoming southeast in the afternoon.

    High: 81 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 85. Calm wind becoming northeast around 5 mph in the afternoon.
Tonight
A 20 percent chance of showers before 10pm. Partly cloudy, with a low around 72. Calm wind becoming north around 5 mph after midnight.
Sunday
Mostly sunny, with a high near 84. North wind around 6 mph becoming light and variable in the afternoon.
Sunday Night
Mostly cloudy, with a low around 72. Northeast wind 3 to 6 mph.
Monday
Mostly sunny, with a high near 84. East wind 6 to 8 mph.
Monday Night
Partly cloudy, with a low around 71. Northeast wind around 8 mph.
Tuesday
Mostly sunny, with a high near 83. East wind 8 to 10 mph.
Tuesday Night
Mostly cloudy, with a low around 73. Northeast wind 7 to 10 mph.
Veterans Day
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. Northeast wind 5 to 7 mph becoming southeast in the afternoon.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 80.
Thursday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 72.
Friday
A 50 percent chance of showers. Mostly cloudy, with a high near 77.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
23 Miles NNW Long Key FL
 25.14°N 80.92°W
Last Update:
3:47 am EST Nov 7, 2026
Forecast Valid:
6am EST Nov 7, 2026-6pm EST Nov 13, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation