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

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Partly Cloudy

75°F

24°C

Humidity 76%
Wind Speed NE 14 G 28 mph
Barometer 30.04 in (1017.1 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 10 Apr 3:53 am EDT
Extended Forecast for

Key Colony Beach FL

  • Overnight

    Overnight: A chance of showers. Partly cloudy, with a low around 73. Northeast wind around 15 mph. Chance of precipitation is 30%.

    Low: 73 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers, mainly before 8am. Mostly sunny, with a high near 79. Northeast wind around 15 mph. Chance of precipitation is 30%.

    High: 79 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers. Partly cloudy, with a low around 72. Northeast wind around 15 mph. Chance of precipitation is 20%.

    Low: 72 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers. Mostly sunny, with a high near 78. Northeast wind around 15 mph. Chance of precipitation is 10%.

    High: 78 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 73. Northeast wind around 15 mph.

    Low: 73 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 79. Breezy.

    High: 79 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73. Breezy.

    Low: 73 °F

    Mostly Clear
    and Breezy

  • Monday

    Monday: Sunny, with a high near 79. Breezy.

    High: 79 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 74. Windy.

    Low: 74 °F

    Partly Cloudy
    and Windy

Detailed Forecast

Overnight
A chance of showers. Partly cloudy, with a low around 73. Northeast wind around 15 mph. Chance of precipitation is 30%.
Friday
A chance of showers, mainly before 8am. Mostly sunny, with a high near 79. Northeast wind around 15 mph. Chance of precipitation is 30%.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 72. Northeast wind around 15 mph. Chance of precipitation is 20%.
Saturday
A slight chance of showers. Mostly sunny, with a high near 78. Northeast wind around 15 mph. Chance of precipitation is 10%.
Saturday Night
Partly cloudy, with a low around 73. Northeast wind around 15 mph.
Sunday
Sunny, with a high near 79. Breezy.
Sunday Night
Mostly clear, with a low around 73. Breezy.
Monday
Sunny, with a high near 79. Breezy.
Monday Night
Partly cloudy, with a low around 74. Windy.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 74. Breezy.
Wednesday
Mostly sunny, with a high near 80.
Wednesday Night
Mostly clear, with a low around 74.
Thursday
Mostly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Key Colony Beach FL
 24.71°N 81.02°W (Elev. 0 ft)
Last Update:
4:15 am EDT Apr 10, 2026
Forecast Valid:
4am EDT Apr 10, 2026-6pm EDT Apr 16, 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