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

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

A Few Clouds

86°F

30°C

Humidity 70%
Wind Speed W 7 mph
Barometer 29.92 in (1013.2 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 28 Jul 7:53 pm EDT
Extended Forecast for

3 Miles ESE Big Pine Key FL

  • Tonight

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

    Low: 83 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms. Mostly sunny, with a high near 92. Southwest wind around 10 mph. Chance of precipitation is 10%.

    High: 92 °F

    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 83. West wind 5 to 10 mph.

    Low: 83 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers and thunderstorms after 9am. Sunny, with a high near 90. Southwest wind around 5 mph. Chance of precipitation is 10%.

    High: 90 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 83. Northwest wind around 5 mph becoming calm in the evening.

    Low: 83 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 10%.

    High: 91 °F

    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 84.

    Low: 84 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 84.

    Low: 84 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 83. Southwest wind around 10 mph. Chance of precipitation is 10%.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 92. Southwest wind around 10 mph. Chance of precipitation is 10%.
Wednesday Night
Mostly clear, with a low around 83. West wind 5 to 10 mph.
Thursday
A slight chance of showers and thunderstorms after 9am. Sunny, with a high near 90. Southwest wind around 5 mph. Chance of precipitation is 10%.
Thursday Night
Partly cloudy, with a low around 83. Northwest wind around 5 mph becoming calm in the evening.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 10%.
Friday Night
Partly cloudy, with a low around 84.
Saturday
Mostly sunny, with a high near 90.
Saturday Night
Mostly cloudy, with a low around 84.
Sunday
Mostly sunny, with a high near 90.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 83. Chance of precipitation is 20%.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 20%.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 84. Chance of precipitation is 10%.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Big Pine Key FL
 24.65°N 81.31°W (Elev. 0 ft)
Last Update:
8:15 pm EDT Jul 28, 2026
Forecast Valid:
8pm EDT Jul 28, 2026-6pm EDT Aug 4, 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