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

82°F

28°C

Humidity 79%
Wind Speed NE 7 mph
Barometer 29.95 in (1014.3 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 21 Sep 12:53 am EDT
Extended Forecast for

Big Pine Key FL

  • Overnight

    Overnight: A chance of showers and thunderstorms. Partly cloudy, with a low around 78. Northeast wind around 10 mph. Chance of precipitation is 30%.

    Low: 78 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Northeast wind around 10 mph. Chance of precipitation is 30%.

    High: 90 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 78. East wind around 10 mph. Chance of precipitation is 40%.

    Low: 78 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms. Partly sunny, with a high near 89. East wind 5 to 10 mph. Chance of precipitation is 40%.

    High: 89 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 78. East wind 5 to 10 mph. Chance of precipitation is 40%.

    Low: 78 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 40%.

    High: 90 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 79. Chance of precipitation is 40%.

    Low: 79 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 40%.

    High: 91 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 79. Chance of precipitation is 30%.

    Low: 79 °F

    Chance
    Showers

Detailed Forecast

Overnight
A chance of showers and thunderstorms. Partly cloudy, with a low around 78. Northeast wind around 10 mph. Chance of precipitation is 30%.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Northeast wind around 10 mph. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 78. East wind around 10 mph. Chance of precipitation is 40%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 89. East wind 5 to 10 mph. Chance of precipitation is 40%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 78. East wind 5 to 10 mph. Chance of precipitation is 40%.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 79. Chance of precipitation is 40%.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 40%.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 79. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 79. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms. Sunny, with a high near 90. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 79. Chance of precipitation is 30%.
Saturday
A chance of showers and thunderstorms. Sunny, with a high near 91. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Big Pine Key FL
 24.68°N 81.35°W (Elev. 3 ft)
Last Update:
1:15 am EDT Sep 21, 2025
Forecast Valid:
1am EDT Sep 21, 2025-6pm EDT Sep 27, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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