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

Hazardous Weather Conditions

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

A Few Clouds

75°F

24°C

Humidity 84%
Wind Speed E 14 G 22 mph
Barometer 29.94 in (1013.7 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 9 Apr 3:53 am EDT
Extended Forecast for

Key Colony Beach FL

  • Overnight

    Overnight: A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Northeast wind around 15 mph. Chance of precipitation is 50%.

    Low: 73 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms. Mostly sunny, with a high near 79. Northeast wind around 15 mph. Chance of precipitation is 30%.

    High: 79 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers. Mostly cloudy, with a low around 74. Northeast wind around 15 mph. Chance of precipitation is 30%.

    Low: 74 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers. 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 73. Breezy, with a northeast wind 15 to 20 mph. Chance of precipitation is 20%.

    Low: 73 °F

    Slight Chance
    Showers and
    Breezy

  • Saturday

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

    High: 78 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 72. Breezy.

    Low: 72 °F

    Mostly Clear
    and Breezy
    then Partly
    Cloudy

  • Sunday

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

    High: 79 °F

    Sunny and
    Breezy

  • Sunday Night

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

    Low: 73 °F

    Mostly Clear
    and Windy

Detailed Forecast

Overnight
A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Northeast wind around 15 mph. Chance of precipitation is 50%.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 79. Northeast wind around 15 mph. Chance of precipitation is 30%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 74. Northeast wind around 15 mph. Chance of precipitation is 30%.
Friday
A chance of showers. 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 73. Breezy, with a northeast wind 15 to 20 mph. Chance of precipitation is 20%.
Saturday
A slight chance of showers. Mostly sunny, with a high near 78. Chance of precipitation is 10%.
Saturday Night
Mostly clear, with a low around 72. Breezy.
Sunday
Sunny, with a high near 79. Breezy.
Sunday Night
Mostly clear, with a low around 73. Windy.
Monday
Sunny, with a high near 79. Windy.
Monday Night
Partly cloudy, with a low around 73. Windy.
Tuesday
Mostly sunny, with a high near 79. Breezy.
Tuesday Night
Partly cloudy, with a low around 74. Windy.
Wednesday
Mostly sunny, with a high near 79.
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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:
4:15 am EDT Apr 9, 2026
Forecast Valid:
4am EDT Apr 9, 2026-6pm EDT Apr 15, 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