Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Partly Cloudy

78°F

26°C

Humidity 87%
Wind Speed E 5 mph
Barometer 29.97 in (1014.9 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 9 Nov 2:53 am EST
Extended Forecast for

23 Miles NNW Long Key FL

  • Overnight

    Overnight: A 20 percent chance of showers.  Partly cloudy, with a low around 73. Light east wind.

    Low: 73 °F

    Slight Chance
    Showers

  • Monday

    Monday: A slight chance of showers before 7am, then a slight chance of showers after noon.  Sunny, with a high near 84. Northeast wind 5 to 7 mph becoming southeast in the afternoon.  Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 73. Northeast wind 5 to 7 mph.

    Low: 73 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 84. Northeast wind 6 to 9 mph becoming southeast in the afternoon.

    High: 84 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 73. East wind 5 to 7 mph.

    Low: 73 °F

    Mostly Cloudy

  • Veterans Day

    Veterans Day: A slight chance of showers, with thunderstorms also possible after 1pm.  Mostly sunny, with a high near 84. Southeast wind around 6 mph.  Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 73. Light and variable wind.

    Low: 73 °F

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly after 1pm.  Partly sunny, with a high near 83. Light southwest wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 20 mph.

    High: 83 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms.  Cloudy, with a low around 73. West wind 9 to 11 mph.

    Low: 73 °F

    Chance
    Showers

Detailed Forecast

Overnight
A 20 percent chance of showers. Partly cloudy, with a low around 73. Light east wind.
Monday
A slight chance of showers before 7am, then a slight chance of showers after noon. Sunny, with a high near 84. Northeast wind 5 to 7 mph becoming southeast in the afternoon. Chance of precipitation is 20%.
Monday Night
Mostly cloudy, with a low around 73. Northeast wind 5 to 7 mph.
Tuesday
Partly sunny, with a high near 84. Northeast wind 6 to 9 mph becoming southeast in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 73. East wind 5 to 7 mph.
Veterans Day
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 84. Southeast wind around 6 mph. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 73. Light and variable wind.
Thursday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 83. Light southwest wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
A 40 percent chance of showers and thunderstorms. Cloudy, with a low around 73. West wind 9 to 11 mph.
Friday
A 20 percent chance of showers. Mostly cloudy, with a high near 77. Breezy.
Friday Night
Mostly cloudy, with a low around 62. Breezy.
Saturday
Sunny, with a high near 71. Breezy.
Saturday Night
Mostly clear, with a low around 59.
Sunday
Sunny, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
23 Miles NNW Long Key FL
 25.14°N 80.92°W
2:56 am EST Nov 9, 2026
3am EST Nov 9, 2026-6pm EST Nov 15, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database