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

Fire Weather Concerns for the Plains; Thunderstorms in the Southeast; Record Warmth Spreads in the Southwest

Elevated to locally critical conditions will persist across the High Plains. Showers and scattered thunderstorms are expected over parts of the Southeast and Florida Peninsula. Clipper system will bring modest snowfall and strong winds from the Northern High Plains into the Upper Midwest this weekend. Record warmth will persist across the Southwest into the southern Plains. 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 E 6 mph
Barometer 29.98 in (1015.3 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 27 Feb 2:53 am EST
Extended Forecast for

Key Colony Beach FL

  • Overnight

    Overnight: Mostly cloudy, with a low around 68. East wind around 5 mph.

    Low: 68 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of showers before 7am. Mostly sunny, with a high near 81. East wind around 5 mph. Chance of precipitation is 10%.

    High: 81 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of showers. Mostly cloudy, with a low around 70. Southeast wind around 5 mph. Chance of precipitation is 10%.

    Low: 70 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers. Mostly sunny, with a high near 81. Southeast wind around 5 mph becoming calm. Chance of precipitation is 10%.

    High: 81 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers. Partly cloudy, with a low around 67. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 20%.

    Low: 67 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers. Mostly sunny, with a high near 79. Chance of precipitation is 10%.

    High: 79 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: A slight chance of showers. Partly cloudy, with a low around 69. Chance of precipitation is 20%.

    Low: 69 °F

    Slight Chance
    Showers

  • Monday

    Monday: A slight chance of showers. Sunny, with a high near 80. Chance of precipitation is 10%.

    High: 80 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers. Mostly clear, with a low around 72. Chance of precipitation is 20%.

    Low: 72 °F

    Slight Chance
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 68. East wind around 5 mph.
Friday
A slight chance of showers before 7am. Mostly sunny, with a high near 81. East wind around 5 mph. Chance of precipitation is 10%.
Friday Night
A slight chance of showers. Mostly cloudy, with a low around 70. Southeast wind around 5 mph. Chance of precipitation is 10%.
Saturday
A slight chance of showers. Mostly sunny, with a high near 81. Southeast wind around 5 mph becoming calm. Chance of precipitation is 10%.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 67. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 20%.
Sunday
A slight chance of showers. Mostly sunny, with a high near 79. Chance of precipitation is 10%.
Sunday Night
A slight chance of showers. Partly cloudy, with a low around 69. Chance of precipitation is 20%.
Monday
A slight chance of showers. Sunny, with a high near 80. Chance of precipitation is 10%.
Monday Night
A slight chance of showers. Mostly clear, with a low around 72. Chance of precipitation is 20%.
Tuesday
A slight chance of showers. Sunny, with a high near 80. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 72. Chance of precipitation is 20%.
Wednesday
A slight chance of showers. Sunny, with a high near 81. Chance of precipitation is 20%.
Wednesday Night
A slight chance of showers. Partly cloudy, with a low around 72. Chance of precipitation is 20%.
Thursday
A slight chance of showers. Mostly sunny, with a high near 81. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Key Colony Beach FL
 24.71°N 81.02°W (Elev. 0 ft)
Last Update:
2:15 am EST Feb 27, 2026
Forecast Valid:
3am EST Feb 27, 2026-6pm EST Mar 5, 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