National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Spring Weather Hazards Across the U.S. Thursday

Gusty winds and low relative humidity will bring critical fire weather to the central and southern Plains and south Texas Thursday. Widespread high winds will continue to impact the interior Northwest, northern Plains, and Upper Midwest Thursday. A storm tracking across the northern Plains, Great Lakes and into the Northeast U.S. will bring heavy snow and gusty winds Thursday into Saturday. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

77°F

25°C

Humidity 82%
Wind Speed SE 9 mph
Barometer 30.07 in (1018.3 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 12 Mar 1:53 am EDT
Extended Forecast for

3 Miles ESE Big Pine Key FL

  • Overnight

    Overnight: Partly cloudy, with a low around 76. Southeast wind around 15 mph.

    Low: 76 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers after 8am. Mostly sunny, with a high near 85. Southeast wind around 10 mph. Chance of precipitation is 20%.

    High: 85 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers. Partly cloudy, with a low around 74. West wind around 5 mph. Chance of precipitation is 30%.

    Low: 74 °F

    Chance
    Showers

  • Friday

    Friday: A slight chance of showers. Mostly sunny, with a high near 84. Northeast wind around 5 mph becoming southeast in the afternoon. Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 74. East wind around 5 mph. Chance of precipitation is 40%.

    Low: 74 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 50%.

    High: 84 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 74. Chance of precipitation is 50%.

    Low: 74 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 83. Chance of precipitation is 60%.

    High: 83 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Chance of precipitation is 40%.

    Low: 74 °F

    Chance
    Showers

Detailed Forecast

Overnight
Partly cloudy, with a low around 76. Southeast wind around 15 mph.
Thursday
A slight chance of showers after 8am. Mostly sunny, with a high near 85. Southeast wind around 10 mph. Chance of precipitation is 20%.
Thursday Night
A chance of showers. Partly cloudy, with a low around 74. West wind around 5 mph. Chance of precipitation is 30%.
Friday
A slight chance of showers. Mostly sunny, with a high near 84. Northeast wind around 5 mph becoming southeast in the afternoon. Chance of precipitation is 20%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 74. East wind around 5 mph. Chance of precipitation is 40%.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 74. Chance of precipitation is 50%.
Sunday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 83. Chance of precipitation is 60%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Chance of precipitation is 40%.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 80. Chance of precipitation is 50%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 40%.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 77. Chance of precipitation is 50%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 66. Breezy. Chance of precipitation is 30%.
Wednesday
A chance of showers. Partly sunny, with a high near 74. Breezy. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Big Pine Key FL
 24.65°N 81.31°W (Elev. 0 ft)
Last Update:
2:15 am EDT Mar 12, 2026
Forecast Valid:
2am EDT Mar 12, 2026-6pm EDT Mar 18, 2026
 
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