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Critical Fire Weather and Severe Thunderstorm Threats This Week

Gusty winds and low relative humidity will contribute to critical fire weather today and Monday over parts of the High Plains. Scattered to widespread severe thunderstorms may bring damaging winds, large hail, and tornadoes Monday through Thursday over the lower Mississippi River Valley and southern Plains into the Midwest and Ohio Valley. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

A Few Clouds

80°F

27°C

Humidity 74%
Wind Speed E 12 mph
Barometer 30.03 in (1016.7 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 8 Mar 4:53 pm EDT
Extended Forecast for

Big Pine Key FL

  • This Afternoon

    This Afternoon: A slight chance of showers. Sunny, with a high near 84. East wind around 15 mph. Chance of precipitation is 10%.

    High: 84 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A slight chance of showers. Mostly clear, with a low around 76. East wind 10 to 15 mph. Chance of precipitation is 10%.

    Low: 76 °F

    Slight Chance
    Showers

  • Monday

    Monday: Sunny, with a high near 84. East wind around 10 mph.

    High: 84 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 75. East wind 10 to 15 mph.

    Low: 75 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 84. East wind around 10 mph.

    High: 84 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers. Mostly clear, with a low around 76. Chance of precipitation is 10%.

    Low: 76 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers. Mostly sunny, with a high near 84. Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    Showers

Detailed Forecast

This Afternoon
A slight chance of showers. Sunny, with a high near 84. East wind around 15 mph. Chance of precipitation is 10%.
Tonight
A slight chance of showers. Mostly clear, with a low around 76. East wind 10 to 15 mph. Chance of precipitation is 10%.
Monday
Sunny, with a high near 84. East wind around 10 mph.
Monday Night
Mostly clear, with a low around 75. East wind 10 to 15 mph.
Tuesday
Sunny, with a high near 84. East wind around 10 mph.
Tuesday Night
Mostly clear, with a low around 75.
Wednesday
Sunny, with a high near 84.
Wednesday Night
A slight chance of showers. Mostly clear, with a low around 76. Chance of precipitation is 10%.
Thursday
A slight chance of showers. Mostly sunny, with a high near 84. Chance of precipitation is 20%.
Thursday Night
A slight chance of showers. Partly cloudy, with a low around 73. Chance of precipitation is 20%.
Friday
A slight chance of showers. Partly sunny, with a high near 83. Chance of precipitation is 20%.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 73. Chance of precipitation is 20%.
Saturday
A slight chance of showers. Mostly sunny, with a high near 83. Chance of precipitation is 20%.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 72. Chance of precipitation is 20%.
Sunday
A chance of showers. Partly sunny, with a high near 82. Chance of precipitation is 30%.
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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:
5:15 pm EDT Mar 8, 2026
Forecast Valid:
5pm EDT Mar 8, 2026-6pm EDT Mar 15, 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