Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

59°F

15°C

Humidity 38%
Wind Speed Vrbl 6 mph
Barometer 30.20 in (1022.4 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Last update 24 Feb 2:53 pm EST
Extended Forecast for

23 Miles NNW Long Key FL

  • This Afternoon

    This Afternoon: Sunny, with a high near 67. Northwest wind around 6 mph.

    High: 67 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 51. Calm wind becoming north around 5 mph after midnight.

    Low: 51 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 73. Northeast wind 6 to 10 mph becoming southeast in the afternoon.

    High: 73 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 62. Southeast wind 6 to 9 mph.

    Low: 62 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 79. Southeast wind 9 to 11 mph.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 67. East wind around 8 mph.

    Low: 67 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 80. Southeast wind 7 to 10 mph.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers, mainly after 1am.  Partly cloudy, with a low around 67. Southeast wind around 8 mph.

    Low: 67 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 1pm.  Mostly sunny, with a high near 81. South wind 7 to 9 mph.  Chance of precipitation is 40%.

    High: 81 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 67. Northwest wind around 6 mph.
Tonight
Mostly clear, with a low around 51. Calm wind becoming north around 5 mph after midnight.
Wednesday
Sunny, with a high near 73. Northeast wind 6 to 10 mph becoming southeast in the afternoon.
Wednesday Night
Mostly clear, with a low around 62. Southeast wind 6 to 9 mph.
Thursday
Sunny, with a high near 79. Southeast wind 9 to 11 mph.
Thursday Night
Mostly clear, with a low around 67. East wind around 8 mph.
Friday
Sunny, with a high near 80. Southeast wind 7 to 10 mph.
Friday Night
A 30 percent chance of showers, mainly after 1am. Partly cloudy, with a low around 67. Southeast wind around 8 mph.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 81. South wind 7 to 9 mph. Chance of precipitation is 40%.
Saturday Night
A 30 percent chance of showers, mainly before 1am. Partly cloudy, with a low around 66.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.
Sunday Night
Mostly clear, with a low around 65.
Monday
A 20 percent chance of showers. Sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
23 Miles NNW Long Key FL
 25.14°N 80.92°W
2:57 pm EST Feb 24, 2026
3pm EST Feb 24, 2026-6pm EST Mar 2, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database