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 E 12 mph
Barometer 29.98 in (1015.3 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 15 Oct 1:53 am EDT
Extended Forecast for

25 Miles NNW Long Key FL

  • Overnight

    Overnight: A 20 percent chance of showers and thunderstorms before 5am.  Partly cloudy, with a low around 76. Northeast wind around 5 mph.

    Low: 76 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 11am.  Mostly sunny, with a high near 89. East wind 5 to 10 mph.  Chance of precipitation is 30%.

    High: 89 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers and thunderstorms after 3am.  Partly cloudy, with a low around 77. East wind 5 to 8 mph.  Chance of precipitation is 30%.

    Low: 77 °F

    Chance
    T-storms

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms, mainly after 2pm.  Mostly sunny, with a high near 88. Southeast wind 5 to 8 mph.

    High: 88 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 5am, then a slight chance of showers.  Partly cloudy, with a low around 76. Light northeast wind.  Chance of precipitation is 40%.

    Low: 76 °F

    Chance
    T-storms

  • Saturday

    Saturday: A slight chance of showers before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm.  Mostly sunny, with a high near 87. Light northeast wind.  Chance of precipitation is 70%.

    High: 87 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm.  Mostly cloudy, with a low around 75. Northeast wind 9 to 13 mph, with gusts as high as 20 mph.  Chance of precipitation is 60%.

    Low: 75 °F

    Showers
    Likely then
    Chance
    T-storms

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm.  Partly sunny, with a high near 84. Breezy, with an east wind around 18 mph, with gusts as high as 26 mph.  Chance of precipitation is 70%.

    High: 84 °F

    Showers
    Likely and
    Breezy

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 75. Windy, with a northeast wind 16 to 21 mph, with gusts as high as 28 mph.

    Low: 75 °F

    Chance
    T-storms and
    Windy

Detailed Forecast

Overnight
A 20 percent chance of showers and thunderstorms before 5am. Partly cloudy, with a low around 76. Northeast wind around 5 mph.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 89. East wind 5 to 10 mph. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers and thunderstorms after 3am. Partly cloudy, with a low around 77. East wind 5 to 8 mph. Chance of precipitation is 30%.
Friday
A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 88. Southeast wind 5 to 8 mph.
Friday Night
A chance of showers and thunderstorms before 5am, then a slight chance of showers. Partly cloudy, with a low around 76. Light northeast wind. Chance of precipitation is 40%.
Saturday
A slight chance of showers before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 87. Light northeast wind. Chance of precipitation is 70%.
Saturday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 75. Northeast wind 9 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Sunday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 84. Breezy, with an east wind around 18 mph, with gusts as high as 26 mph. Chance of precipitation is 70%.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75. Windy, with a northeast wind 16 to 21 mph, with gusts as high as 28 mph.
Monday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 85. Windy. Chance of precipitation is 60%.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. Breezy.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85. Breezy.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. Breezy.
Wednesday
A 40 percent chance of showers and thunderstorms. Sunny, with a high near 85. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
25 Miles NNW Long Key FL
 25.17°N 80.97°W
5:17 pm EDT Oct 14, 2026
2am EDT Oct 15, 2026-6pm EDT Oct 21, 2026
 
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