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

Lake Effect Snow through Friday; Heavy Rain, Thunderstorms and Mountain Snow in California

Periods of moderate to heavy lake effect snow will continue through Friday downwind of Lake Erie and Ontario. Several additional inches of accumulating snow are expected. A Pacific storm will bring heavy rain and mountain snow across California, the Southwest and Intermountain West today. Isolated severe thunderstorms and scattered flash flooding is possible across parts of southern California. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

62°F

17°C

Humidity 62%
Wind Speed NE 7 mph
Barometer 30.18 in (1021.8 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 1 Jan 11:53 am EST
Extended Forecast for

3 Miles NE Islamorada FL

  • New Year's Day

    New Year's Day: Sunny, with a high near 65. Northwest wind 5 to 10 mph.

    High: 65 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 54. Northwest wind 5 to 10 mph.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 67. North wind around 5 mph becoming calm in the morning.

    High: 67 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60. Calm wind.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 72. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 72 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers. Mostly clear, with a low around 65. Chance of precipitation is 10%.

    Low: 65 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

Detailed Forecast

New Year's Day
Sunny, with a high near 65. Northwest wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 54. Northwest wind 5 to 10 mph.
Friday
Sunny, with a high near 67. North wind around 5 mph becoming calm in the morning.
Friday Night
Mostly clear, with a low around 60. Calm wind.
Saturday
Sunny, with a high near 72. Calm wind becoming southwest around 5 mph in the afternoon.
Saturday Night
A slight chance of showers. Mostly clear, with a low around 65. Chance of precipitation is 10%.
Sunday
Sunny, with a high near 76.
Sunday Night
Mostly clear, with a low around 64.
Monday
Sunny, with a high near 76.
Monday Night
Mostly clear, with a low around 67.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Partly cloudy, with a low around 68.
Wednesday
Sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Islamorada FL
 24.95°N 80.59°W (Elev. 0 ft)
Last Update:
11:15 am EST Jan 1, 2026
Forecast Valid:
12pm EST Jan 1, 2026-6pm EST Jan 7, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation