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

Tracking Winter Weather and Frigid Temperatures Through This Weekend

A clipper storm will move across the Great Lakes through this weekend with periods of light snow, gusty winds, and lake effect snow bands which could make for hazardous travel at times. A frigid airmass will spread eastward behind this storm into the Midwest and Eastern U.S. through the weekend. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

54°F

12°C

Humidity 45%
Wind Speed N 10 mph
Barometer 30.21 in (1023.0 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 16 Jan 9:53 am EST
Extended Forecast for

Key Colony Beach FL

  • Today

    Today: Sunny, with a high near 65. Northeast wind 5 to 10 mph.

    High: 65 °F

    Sunny

  • Tonight

    Tonight: A slight chance of showers after 1am. Partly cloudy, with a low around 65. East wind around 10 mph. Chance of precipitation is 10%.

    Low: 65 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers. Partly sunny, with a high near 75. Northeast wind around 5 mph. Chance of precipitation is 20%.

    High: 75 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers. Mostly cloudy, with a low around 67. Northeast wind 5 to 10 mph. Chance of precipitation is 20%.

    Low: 67 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers. Partly sunny, with a high near 75. North wind 10 to 15 mph. Chance of precipitation is 20%.

    High: 75 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: A slight chance of showers. Mostly cloudy, with a low around 57. Breezy. Chance of precipitation is 10%.

    Low: 57 °F

    Slight Chance
    Showers and
    Breezy

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 59.

    Low: 59 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 65. Northeast wind 5 to 10 mph.
Tonight
A slight chance of showers after 1am. Partly cloudy, with a low around 65. East wind around 10 mph. Chance of precipitation is 10%.
Saturday
A slight chance of showers. Partly sunny, with a high near 75. Northeast wind around 5 mph. Chance of precipitation is 20%.
Saturday Night
A slight chance of showers. Mostly cloudy, with a low around 67. Northeast wind 5 to 10 mph. Chance of precipitation is 20%.
Sunday
A slight chance of showers. Partly sunny, with a high near 75. North wind 10 to 15 mph. Chance of precipitation is 20%.
Sunday Night
A slight chance of showers. Mostly cloudy, with a low around 57. Breezy. Chance of precipitation is 10%.
M.L.King Day
Mostly sunny, with a high near 67.
Monday Night
Mostly cloudy, with a low around 59.
Tuesday
Mostly sunny, with a high near 73.
Tuesday Night
Partly cloudy, with a low around 65.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 75. Breezy. Chance of precipitation is 10%.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 69. Breezy. Chance of precipitation is 20%.
Thursday
A slight chance of showers. Partly sunny, with a high near 78. Chance of precipitation is 20%.
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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:
10:03 am EST Jan 16, 2026
Forecast Valid:
10am EST Jan 16, 2026-6pm EST Jan 22, 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