National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

81°F

27°C

Humidity 82%
Wind Speed E 3 mph
Barometer 30.06 in (1017.7 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 24 Jun 5:53 am EDT
Extended Forecast for

5 Miles WSW Long Key FL

  • Today

    Today: Mostly sunny, with a high near 88. East wind around 5 mph.

    High: 88 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 83. East wind 5 to 10 mph. Chance of precipitation is 20%.

    Low: 83 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: Mostly sunny, with a high near 88. Southeast wind 5 to 10 mph.

    High: 88 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms. Mostly clear, with a low around 84. East wind around 10 mph. Chance of precipitation is 10%.

    Low: 84 °F

    Slight Chance
    T-storms

  • Friday

    Friday: Sunny, with a high near 88. East wind around 10 mph.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 84.

    Low: 84 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers and thunderstorms. Sunny, with a high near 88. Chance of precipitation is 10%.

    High: 88 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A slight chance of showers. Mostly clear, with a low around 83. Chance of precipitation is 10%.

    Low: 83 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 88. East wind around 5 mph.
Tonight
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 83. East wind 5 to 10 mph. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 88. Southeast wind 5 to 10 mph.
Thursday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 84. East wind around 10 mph. Chance of precipitation is 10%.
Friday
Sunny, with a high near 88. East wind around 10 mph.
Friday Night
Mostly clear, with a low around 84.
Saturday
A slight chance of showers and thunderstorms. Sunny, with a high near 88. Chance of precipitation is 10%.
Saturday Night
A slight chance of showers. Mostly clear, with a low around 83. Chance of precipitation is 10%.
Sunday
Sunny, with a high near 88.
Sunday Night
Mostly clear, with a low around 83.
Monday
Sunny, with a high near 88.
Monday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 83. Chance of precipitation is 20%.
Tuesday
A slight chance of showers and thunderstorms. Sunny, with a high near 88. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Long Key FL
 24.79°N 80.89°W (Elev. 0 ft)
Last Update:
6:15 am EDT Jun 24, 2026
Forecast Valid:
6am EDT Jun 24, 2026-6pm EDT Jun 30, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation