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

Early Spring Heat Wave in the Southwest U.S.; Critical Fire Weather in the Central Rockies and Plains

An unusual early Spring heat wave will continue much above-normal temperatures over the Southwest U.S. through early next week. Many locations are likely to set records for the highest-ever March temperature. Periods of critical fire weather will persist from the central Rockies to the central Plains through Saturday as gusty winds and low relative humidity continue. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

75°F

24°C

Humidity 58%
Wind Speed NE 12 G 21 mph
Barometer 29.98 in (1015.0 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 19 Mar 4:53 pm EDT
Extended Forecast for

Plantation Key FL

  • This Afternoon

    This Afternoon: A slight chance of showers. Mostly sunny, with a high near 74. Northeast wind around 15 mph. Chance of precipitation is 10%.

    High: 74 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A slight chance of showers. Partly cloudy, with a low around 65. Northeast wind around 15 mph. Chance of precipitation is 10%.

    Low: 65 °F

    Slight Chance
    Showers

  • Friday

    Friday: A slight chance of showers. Mostly sunny, with a high near 74. North wind around 15 mph. Chance of precipitation is 20%.

    High: 74 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 64. Northeast wind 10 to 15 mph.

    Low: 64 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 76. North wind 5 to 10 mph.

    High: 76 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

Detailed Forecast

This Afternoon
A slight chance of showers. Mostly sunny, with a high near 74. Northeast wind around 15 mph. Chance of precipitation is 10%.
Tonight
A slight chance of showers. Partly cloudy, with a low around 65. Northeast wind around 15 mph. Chance of precipitation is 10%.
Friday
A slight chance of showers. Mostly sunny, with a high near 74. North wind around 15 mph. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 64. Northeast wind 10 to 15 mph.
Saturday
Sunny, with a high near 76. North wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 67.
Sunday
Sunny, with a high near 77.
Sunday Night
Mostly clear, with a low around 69.
Monday
Sunny, with a high near 78.
Monday Night
Mostly clear, with a low around 69.
Tuesday
Sunny, with a high near 78.
Tuesday Night
Mostly clear, with a low around 71.
Wednesday
A slight chance of showers. Sunny, with a high near 78. Chance of precipitation is 10%.
Wednesday Night
Mostly clear, with a low around 71.
Thursday
A slight chance of showers. Sunny, with a high near 79. Chance of precipitation is 10%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Plantation Key FL
 24.97°N 80.56°W (Elev. 0 ft)
Last Update:
5:15 pm EDT Mar 19, 2026
Forecast Valid:
5pm EDT Mar 19, 2026-6pm EDT Mar 26, 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