Storm Impacting the Southwest U.S.

A slow moving weather disturbance will continue to bring periodic rain showers, a few isolated thunderstorms, and a localized flash flooding across the Southwest. The threat will expand into the Southern Plains Wednesday night. Moderate to heavy snow across the Sierra Nevada and southern Utah Ranges will continue into the overnight period. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

73°F

23°C

Humidity 90%
Wind Speed NE 6 mph
Barometer 30.07 in (1018.3 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 19 Nov 2:53 am EST
Extended Forecast for

Key Colony Beach FL

  • Overnight

    Overnight: Mostly clear, with a low around 73. East wind around 10 mph.

    Low: 73 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78. East wind around 10 mph.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 72. Northeast wind 5 to 10 mph.

    Low: 72 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 78. East wind 5 to 10 mph.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 73. East wind around 10 mph.

    Low: 73 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Saturday Night

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

    Low: 72 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 73. East wind around 10 mph.
Wednesday
Sunny, with a high near 78. East wind around 10 mph.
Wednesday Night
Mostly clear, with a low around 72. Northeast wind 5 to 10 mph.
Thursday
Sunny, with a high near 78. East wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 73. East wind around 10 mph.
Friday
Sunny, with a high near 78.
Friday Night
Mostly clear, with a low around 73.
Saturday
Sunny, with a high near 78.
Saturday Night
Mostly clear, with a low around 72.
Sunday
Sunny, with a high near 78.
Sunday Night
Mostly clear, with a low around 72.
Monday
Sunny, with a high near 78.
Monday Night
Mostly clear, with a low around 73.
Tuesday
Sunny, with a high near 79.
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ABOUT THIS FORECAST

 
Point Forecast:
Key Colony Beach FL
 24.74°N 81.02°W (Elev. 0 ft)
3:15 am EST Nov 19, 2025
3am EST Nov 19, 2025-6pm EST Nov 25, 2025
 
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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