Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

A Few Clouds

73°F

23°C

Humidity 94%
Wind Speed NE 6 mph
Barometer 29.93 in (1013.5 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 10 Dec 1:53 am EST
Extended Forecast for

Long Key FL

  • Overnight

    Overnight: A slight chance of showers.  Mostly cloudy, with a low around 72. Northeast wind 5 to 10 mph.  Chance of precipitation is 10%.

    Low: 72 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers.  Mostly sunny, with a high near 77. North wind 5 to 10 mph becoming light northwest.  Chance of precipitation is 10%.

    High: 77 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers.  Partly cloudy, with a low around 65. Northwest wind around 10 mph.  Chance of precipitation is 10%.

    Low: 65 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 75. North wind 5 to 10 mph.

    High: 75 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 68. North wind around 10 mph.

    Low: 68 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Friday Night

    Friday Night: A slight chance of showers.  Partly cloudy, with a low around 72. Chance of precipitation is 10%.

    Low: 72 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers.  Partly sunny, with a high near 77. Chance of precipitation is 20%.

    High: 77 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers.  Mostly cloudy, with a low around 72. Chance of precipitation is 40%.

    Low: 72 °F

    Chance
    Showers

Detailed Forecast

Overnight
A slight chance of showers. Mostly cloudy, with a low around 72. Northeast wind 5 to 10 mph. Chance of precipitation is 10%.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 77. North wind 5 to 10 mph becoming light northwest. Chance of precipitation is 10%.
Wednesday Night
A slight chance of showers. Partly cloudy, with a low around 65. Northwest wind around 10 mph. Chance of precipitation is 10%.
Thursday
Mostly sunny, with a high near 75. North wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 68. North wind around 10 mph.
Friday
Sunny, with a high near 76.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 72. Chance of precipitation is 10%.
Saturday
A slight chance of showers. Partly sunny, with a high near 77. Chance of precipitation is 20%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 72. Chance of precipitation is 40%.
Sunday
A chance of showers. Mostly cloudy, with a high near 78. Chance of precipitation is 30%.
Sunday Night
A slight chance of showers. Mostly cloudy, with a low around 70. Chance of precipitation is 20%.
Monday
A slight chance of showers. Mostly sunny, with a high near 77. Chance of precipitation is 20%.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 70. Chance of precipitation is 10%.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 76. Chance of precipitation is 10%.
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ABOUT THIS FORECAST

 
Point Forecast:
Long Key FL
 24.83°N 80.81°W (Elev. 0 ft)
1:15 am EST Dec 10, 2025
1am EST Dec 10, 2025-6pm EST Dec 16, 2025
 
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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