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

77°F

25°C

Humidity 69%
Wind Speed E 12 mph
Barometer 30.09 in (1018.7 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 24 Nov 10:53 pm EST
Extended Forecast for

27 Miles NW Long Key FL

  • Tonight

    Tonight: Mostly clear, with a low around 72. East wind around 11 mph.

    Low: 72 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78. East wind 11 to 15 mph, with gusts as high as 18 mph.

    High: 78 °F

    Sunny

  • Tuesday Night

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

    Low: 73 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 78. East wind around 8 mph.

    High: 78 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 71. East wind around 6 mph becoming north after midnight.

    Low: 71 °F

    Mostly Cloudy

  • Thanksgiving Day

    Thanksgiving Day: Mostly cloudy, with a high near 77. North wind 6 to 8 mph.

    High: 77 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 64. Windy, with a north wind 11 to 21 mph, with gusts as high as 26 mph.

    Low: 64 °F

    Mostly Cloudy
    and Windy

  • Friday

    Friday: Partly sunny, with a high near 74. Windy, with a north wind 22 to 25 mph, with gusts as high as 28 mph.

    High: 74 °F

    Partly Sunny
    and Windy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 65. Windy, with a northeast wind 17 to 23 mph, with gusts as high as 26 mph.

    Low: 65 °F

    Partly Cloudy
    and Windy

Detailed Forecast

Tonight
Mostly clear, with a low around 72. East wind around 11 mph.
Tuesday
Sunny, with a high near 78. East wind 11 to 15 mph, with gusts as high as 18 mph.
Tuesday Night
Mostly clear, with a low around 73. East wind 7 to 10 mph.
Wednesday
Mostly sunny, with a high near 78. East wind around 8 mph.
Wednesday Night
Mostly cloudy, with a low around 71. East wind around 6 mph becoming north after midnight.
Thanksgiving Day
Mostly cloudy, with a high near 77. North wind 6 to 8 mph.
Thursday Night
Mostly cloudy, with a low around 64. Windy, with a north wind 11 to 21 mph, with gusts as high as 26 mph.
Friday
Partly sunny, with a high near 74. Windy, with a north wind 22 to 25 mph, with gusts as high as 28 mph.
Friday Night
Partly cloudy, with a low around 65. Windy, with a northeast wind 17 to 23 mph, with gusts as high as 26 mph.
Saturday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 75. Windy.
Saturday Night
A 20 percent chance of showers. Partly cloudy, with a low around 70. Windy.
Sunday
Mostly sunny, with a high near 77. Windy.
Sunday Night
Partly cloudy, with a low around 72.
Monday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
27 Miles NW Long Key FL
 25.13°N 81.08°W
Last Update:
10:36 pm EST Nov 24, 2025
Forecast Valid:
11pm EST Nov 24, 2025-6pm EST Dec 1, 2025
 
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Additional Resources

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Chance of Precipitation