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

Heavy Mountain Snow in the Northwest U.S.; Wintry Mix in the Northeast U.S.

Two more cold fronts will pass through the Northwest U.S. this week with heavy mountain snow continuing across the Cascades, and northern Rockies. A quick moving storm system will bring mixed precipitation including some freezing rain across the Northeast U.S. overnight into Wednesday. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

N/A

Humidity NA
Wind Speed Calm
Barometer 30.04 in (1017.3 mb)
Dewpoint N/A
Visibility 10.00 mi
Last update 7 Jan 12:53 am EST
Extended Forecast for

Key Colony Beach FL

  • Overnight

    Overnight: Partly cloudy, with a low around 68. East wind around 5 mph.

    Low: 68 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 76. Northeast wind around 5 mph.

    High: 76 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers. Mostly clear, with a low around 69. Northeast wind 5 to 10 mph. Chance of precipitation is 10%.

    Low: 69 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers. Sunny, with a high near 76. East wind around 10 mph. Chance of precipitation is 10%.

    High: 76 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 71. East wind around 10 mph.

    Low: 71 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Friday Night

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

    Low: 72 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers. Sunny, with a high near 77. Chance of precipitation is 10%.

    High: 77 °F

    Slight Chance
    Showers

  • Saturday Night

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

    Low: 72 °F

    Slight Chance
    Showers

Detailed Forecast

Overnight
Partly cloudy, with a low around 68. East wind around 5 mph.
Wednesday
Mostly sunny, with a high near 76. Northeast wind around 5 mph.
Wednesday Night
A slight chance of showers. Mostly clear, with a low around 69. Northeast wind 5 to 10 mph. Chance of precipitation is 10%.
Thursday
A slight chance of showers. Sunny, with a high near 76. East wind around 10 mph. Chance of precipitation is 10%.
Thursday Night
Mostly clear, with a low around 71. East wind around 10 mph.
Friday
Sunny, with a high near 77.
Friday Night
A slight chance of showers. Mostly clear, with a low around 72. Chance of precipitation is 10%.
Saturday
A slight chance of showers. Sunny, with a high near 77. Chance of precipitation is 10%.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 72. Chance of precipitation is 10%.
Sunday
A slight chance of showers. Mostly sunny, with a high near 78. Chance of precipitation is 10%.
Sunday Night
A slight chance of showers. Partly cloudy, with a low around 71. Chance of precipitation is 20%.
Monday
A slight chance of showers. Mostly sunny, with a high near 74. Chance of precipitation is 20%.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 67. Chance of precipitation is 10%.
Tuesday
Mostly sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Key Colony Beach FL
 24.74°N 81.02°W (Elev. 0 ft)
Last Update:
12:15 am EST Jan 7, 2026
Forecast Valid:
1am EST Jan 7, 2026-6pm EST Jan 13, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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