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

Significant Severe Weather in the Upper Midwest; Blizzard Conditions in the Cascades; Heavy Rain and Thunderstorms in Hawaii

Significant severe thunderstorms, including the risk for strong to intense tornadoes, are expected across the Upper Midwest this afternoon and evening. An atmospheric river will bring blizzard conditions to the northern Cascades. A powerful Kona storm is expected to impact Hawaii today into Saturday, bringing heavy rainfall and strong winds. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

A Few Clouds

81°F

27°C

Humidity 69%
Wind Speed E 13 mph
Barometer 30.13 in (1020.4 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 10 Mar 2:53 pm EDT
Extended Forecast for

Big Pine Key FL

  • This Afternoon

    This Afternoon: A slight chance of showers. Sunny, with a high near 83. East wind around 15 mph. Chance of precipitation is 10%.

    High: 83 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 73. East wind around 15 mph.

    Low: 73 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 83. East wind around 15 mph.

    High: 83 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 73. East wind around 15 mph.

    Low: 73 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 83. Southeast wind 10 to 15 mph.

    High: 83 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers. Partly cloudy, with a low around 72. Chance of precipitation is 20%.

    Low: 72 °F

    Slight Chance
    Showers

  • Friday

    Friday: A chance of showers. Mostly sunny, with a high near 83. Chance of precipitation is 30%.

    High: 83 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers. Partly sunny, with a high near 83. Chance of precipitation is 30%.

    High: 83 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
A slight chance of showers. Sunny, with a high near 83. East wind around 15 mph. Chance of precipitation is 10%.
Tonight
Partly cloudy, with a low around 73. East wind around 15 mph.
Wednesday
Sunny, with a high near 83. East wind around 15 mph.
Wednesday Night
Mostly clear, with a low around 73. East wind around 15 mph.
Thursday
Mostly sunny, with a high near 83. Southeast wind 10 to 15 mph.
Thursday Night
A slight chance of showers. Partly cloudy, with a low around 72. Chance of precipitation is 20%.
Friday
A chance of showers. Mostly sunny, with a high near 83. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 30%.
Saturday
A chance of showers. Partly sunny, with a high near 83. Chance of precipitation is 30%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 73. Chance of precipitation is 30%.
Sunday
A chance of showers. Partly sunny, with a high near 83. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 40%.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 83. 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 pm EDT Mar 10, 2026
Forecast Valid:
3pm EDT Mar 10, 2026-6pm EDT Mar 16, 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