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

Atmospheric River Continues Areas of Heavy Rain and Snow for California This Weekend

An atmospheric river will continue to bring gusty winds, moderate to heavy rainfall, and potential flooding to southern California and the southern Great Basin through Sunday. Periods of heavy snow will continue as well above 7,000 feet over the Sierra Nevada mountains associated with this atmospheric river. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

74°F

23°C

Humidity 76%
Wind Speed Vrbl 5 mph
Barometer 29.98 in (1015.1 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 16 Nov 10:53 am EST
Extended Forecast for

Long Key FL

  • Today

    Today: Sunny, with a high near 79. Northwest wind around 5 mph.

    High: 79 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 67. Northwest wind around 5 mph.

    Low: 67 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 79. North wind around 5 mph becoming calm in the morning.

    High: 79 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 67. Calm wind becoming northeast around 5 mph after midnight.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 80. East wind 5 to 10 mph.

    High: 80 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 79. Northwest wind around 5 mph.
Tonight
Mostly clear, with a low around 67. Northwest wind around 5 mph.
Monday
Sunny, with a high near 79. North wind around 5 mph becoming calm in the morning.
Monday Night
Mostly clear, with a low around 67. Calm wind becoming northeast around 5 mph after midnight.
Tuesday
Sunny, with a high near 80. East wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 70.
Wednesday
Sunny, with a high near 81.
Wednesday Night
Mostly clear, with a low around 72.
Thursday
Sunny, with a high near 80.
Thursday Night
Mostly clear, with a low around 74.
Friday
Sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 72.
Saturday
Sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Long Key FL
 24.83°N 80.81°W (Elev. 0 ft)
Last Update:
11:15 am EST Nov 16, 2025
Forecast Valid:
11am EST Nov 16, 2025-6pm EST Nov 22, 2025
 
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