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.

Fair

88°F

31°C

Humidity 68%
Wind Speed Vrbl 7 mph
Barometer 30.03 in (1016.8 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 24 Jun 2:53 pm EDT
Extended Forecast for

Big Pine Key FL

  • This Afternoon

    This Afternoon: A slight chance of showers and thunderstorms. Mostly sunny, with a high near 92. Southeast wind around 5 mph. Chance of precipitation is 20%.

    High: 92 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 82. East wind around 5 mph. Chance of precipitation is 10%.

    Low: 82 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers and thunderstorms. Mostly sunny, with a high near 92. Southeast wind 5 to 10 mph. Chance of precipitation is 10%.

    High: 92 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms. Mostly clear, with a low around 83. East wind around 10 mph. Chance of precipitation is 10%.

    Low: 83 °F

    Slight Chance
    T-storms

  • Friday

    Friday: Sunny, with a high near 93. East wind around 10 mph.

    High: 93 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 82.

    Low: 82 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms. Mostly clear, with a low around 82. Chance of precipitation is 20%.

    Low: 82 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

Detailed Forecast

This Afternoon
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 92. Southeast wind around 5 mph. Chance of precipitation is 20%.
Tonight
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 82. East wind around 5 mph. Chance of precipitation is 10%.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 92. Southeast wind 5 to 10 mph. Chance of precipitation is 10%.
Thursday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 83. East wind around 10 mph. Chance of precipitation is 10%.
Friday
Sunny, with a high near 93. East wind around 10 mph.
Friday Night
Mostly clear, with a low around 82.
Saturday
Sunny, with a high near 93.
Saturday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 82. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 93.
Sunday Night
Mostly clear, with a low around 82.
Monday
A slight chance of showers. Sunny, with a high near 93. Chance of precipitation is 10%.
Monday Night
A slight chance of showers. Mostly clear, with a low around 82. Chance of precipitation is 10%.
Tuesday
A slight chance of showers. Sunny, with a high near 93. Chance of precipitation is 10%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Big Pine Key FL
 24.68°N 81.35°W (Elev. 3 ft)
Last Update:
2:15 pm EDT Jun 24, 2026
Forecast Valid:
3pm EDT Jun 24, 2026-6pm EDT Jun 30, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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