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

Dangerous Cold and Gusty Winds Anticipated This Weekend

A significant arctic outbreak will bring frigid temperatures and dangerously cold wind chills to the Northeast and Mid-Atlantic this weekend. Strong winds which could produce tree damage and power outages, and periods of snow squalls are also possible. Relief from this cold and a warming trend is forecast to commence by the beginning to middle of next week. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Partly Cloudy

56°F

13°C

Humidity 77%
Wind Speed N 10 G 21 mph
Barometer 30.10 in (1019.3 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 6 Feb 1:53 am EST
Extended Forecast for

Key Colony Beach FL

  • Overnight

    Overnight: Partly cloudy, with a low around 52. Northwest wind around 15 mph.

    Low: 52 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 64. North wind 10 to 15 mph.

    High: 64 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 57. Northwest wind 10 to 15 mph.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 71. Northwest wind 10 to 15 mph.

    High: 71 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 57. Northwest wind around 15 mph becoming northeast after midnight.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 52. Northwest wind around 15 mph.
Friday
Mostly sunny, with a high near 64. North wind 10 to 15 mph.
Friday Night
Mostly clear, with a low around 57. Northwest wind 10 to 15 mph.
Saturday
Sunny, with a high near 71. Northwest wind 10 to 15 mph.
Saturday Night
Mostly clear, with a low around 57. Northwest wind around 15 mph becoming northeast after midnight.
Sunday
Sunny, with a high near 70.
Sunday Night
Mostly clear, with a low around 60.
Monday
Sunny, with a high near 71.
Monday Night
Mostly clear, with a low around 62.
Tuesday
Sunny, with a high near 74.
Tuesday Night
Mostly clear, with a low around 64.
Wednesday
Sunny, with a high near 76.
Wednesday Night
Mostly clear, with a low around 64.
Thursday
Sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Key Colony Beach FL
 24.74°N 81.02°W (Elev. 0 ft)
Last Update:
1:46 am EST Feb 6, 2026
Forecast Valid:
2am EST Feb 6, 2026-6pm EST Feb 12, 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