Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

88°F

31°C

Humidity 63%
Wind Speed E 13 mph
Barometer 29.94 in (1013.9 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 13 Oct 4:53 pm EDT
Extended Forecast for

30 Miles NNW Long Key FL

  • Tonight

    Tonight: Mostly clear, with a low around 74. Northeast wind 5 to 7 mph.

    Low: 74 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms, mainly after 1pm.  Increasing clouds, with a high near 88. Northeast wind 6 to 10 mph.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 5am, then a slight chance of showers.  Mostly clear, with a low around 76. East wind 5 to 9 mph, with gusts as high as 20 mph.  Chance of precipitation is 30%.

    Low: 76 °F

    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 11am.  Sunny, with a high near 89. East wind 5 to 10 mph.  Chance of precipitation is 40%.

    High: 89 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before 2am.  Mostly clear, with a low around 76. East wind 3 to 7 mph.

    Low: 76 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms, mainly after 2pm.  Mostly sunny, with a high near 89. Southeast wind 3 to 6 mph.

    High: 89 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms, mainly before 2am.  Partly cloudy, with a low around 75. Calm wind.

    Low: 75 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm.  High near 88. East wind 3 to 7 mph.  Chance of precipitation is 80%.

    High: 88 °F

    Chance
    T-storms then
    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm.  Low around 74. Northeast wind around 10 mph, with gusts as high as 21 mph.  Chance of precipitation is 80%.

    Low: 74 °F

    Showers then
    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 74. Northeast wind 5 to 7 mph.
Wednesday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Increasing clouds, with a high near 88. Northeast wind 6 to 10 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers and thunderstorms before 5am, then a slight chance of showers. Mostly clear, with a low around 76. East wind 5 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Thursday
A chance of showers, with thunderstorms also possible after 11am. Sunny, with a high near 89. East wind 5 to 10 mph. Chance of precipitation is 40%.
Thursday Night
A 30 percent chance of showers and thunderstorms before 2am. Mostly clear, with a low around 76. East wind 3 to 7 mph.
Friday
A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 89. Southeast wind 3 to 6 mph.
Friday Night
A 40 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 75. Calm wind.
Saturday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 88. East wind 3 to 7 mph. Chance of precipitation is 80%.
Saturday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Low around 74. Northeast wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Sunday
Showers and possibly a thunderstorm. High near 86. Breezy. Chance of precipitation is 80%.
Sunday Night
Showers and thunderstorms. Low around 74. Breezy. Chance of precipitation is 80%.
Monday
Showers and possibly a thunderstorm. High near 86. Breezy. Chance of precipitation is 80%.
Monday Night
Showers and thunderstorms. Low around 74. Chance of precipitation is 80%.
Tuesday
Showers and thunderstorms likely. Mostly sunny, with a high near 86. Breezy. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
30 Miles NNW Long Key FL
 25.2°N 81.07°W
5:01 pm EDT Oct 13, 2026
5pm EDT Oct 13, 2026-6pm EDT Oct 20, 2026
 
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Additional Resources

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