Areas of Dangerous Heat and Severe Thunderstorms

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week before returning over much of the Plains into next week. Scattered strong to severe thunderstorms are possible across parts of the Northeast U.S. on Thursday. Damaging wind, hail, and a tornado or two are possible. Read More >

Hazardous Weather Conditions

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

87°F

31°C

Humidity 70%
Wind Speed E 10 mph
Barometer 29.99 in (1015.3 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 26 Aug 7:53 pm EDT
Extended Forecast for

Big Pine Key FL

  • Tonight

    Tonight: A chance of showers and thunderstorms.  Partly cloudy, with a low around 83. Southeast wind around 10 mph.  Chance of precipitation is 40%.

    Low: 83 °F

    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms.  Mostly sunny, with a high near 90. Southeast wind 5 to 10 mph.  Chance of precipitation is 50%.

    High: 90 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms.  Partly cloudy, with a low around 83. East wind around 10 mph.  Chance of precipitation is 40%.

    Low: 83 °F

    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms.  Mostly sunny, with a high near 91. East wind 5 to 10 mph.  Chance of precipitation is 50%.

    High: 91 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms.  Partly cloudy, with a low around 83. East wind 5 to 10 mph.  Chance of precipitation is 40%.

    Low: 83 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms.  Mostly sunny, with a high near 90. Chance of precipitation is 50%.

    High: 90 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm.  Partly cloudy, with a low around 82. Chance of precipitation is 60%.

    Low: 82 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers and thunderstorms.  Mostly sunny, with a high near 93. Chance of precipitation is 50%.

    High: 93 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms.  Partly cloudy, with a low around 82. Chance of precipitation is 50%.

    Low: 82 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A chance of showers and thunderstorms. Partly cloudy, with a low around 83. Southeast wind around 10 mph. Chance of precipitation is 40%.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Southeast wind 5 to 10 mph. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 83. East wind around 10 mph. Chance of precipitation is 40%.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. East wind 5 to 10 mph. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 83. East wind 5 to 10 mph. Chance of precipitation is 40%.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 50%.
Saturday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 82. Chance of precipitation is 60%.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 93. Chance of precipitation is 50%.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 82. Chance of precipitation is 50%.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 93. Chance of precipitation is 40%.
Monday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 82. Chance of precipitation is 60%.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 93. Chance of precipitation is 50%.
Tuesday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 81. Chance of precipitation is 60%.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 93. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Big Pine Key FL
 24.68°N 81.35°W (Elev. 3 ft)
9:15 pm EDT Aug 26, 2026
9pm EDT Aug 26, 2026-6pm EDT Sep 2, 2026
 
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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