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.

Mostly Cloudy

N/A

Humidity NA
Wind Speed S 6 mph
Barometer 29.97 in (1015.0 mb)
Dewpoint N/A
Visibility 10.00 mi
Last update 6 Sep 1:53 am EDT
Extended Forecast for

Big Pine Key FL

  • Overnight

    Overnight: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 78. South wind around 10 mph. Chance of precipitation is 70%.

    Low: 78 °F

    Showers
    Likely

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 89. Southwest wind 5 to 10 mph. Chance of precipitation is 70%.

    High: 89 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 79. South wind around 5 mph. Chance of precipitation is 70%.

    Low: 79 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers and thunderstorms. Partly sunny, with a high near 91. South wind around 5 mph. Chance of precipitation is 50%.

    High: 91 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 79. West wind around 5 mph becoming calm. Chance of precipitation is 50%.

    Low: 79 °F

    Chance
    T-storms

  • Monday

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

    High: 91 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 79. Chance of precipitation is 60%.

    Low: 79 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 50%.

    High: 91 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 80. Chance of precipitation is 40%.

    Low: 80 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 78. South wind around 10 mph. Chance of precipitation is 70%.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 89. Southwest wind 5 to 10 mph. Chance of precipitation is 70%.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 79. South wind around 5 mph. Chance of precipitation is 70%.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 91. South wind around 5 mph. Chance of precipitation is 50%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 79. West wind around 5 mph becoming calm. Chance of precipitation is 50%.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 40%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 79. Chance of precipitation is 60%.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 80. Chance of precipitation is 40%.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Chance of precipitation is 50%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 79. Chance of precipitation is 50%.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 79. Chance of precipitation is 50%.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 91. Chance of precipitation is 50%.
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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 am EDT Sep 6, 2025
Forecast Valid:
2am EDT Sep 6, 2025-6pm EDT Sep 12, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation