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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Fair

75°F

24°C

Humidity 64%
Wind Speed NE 12 G 21 mph
Barometer 30.03 in (1016.8 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 20 Mar 1:53 pm EDT
Extended Forecast for

Plantation Key FL

  • This Afternoon

    This Afternoon: Sunny, with a high near 76. Breezy, with a northeast wind around 20 mph.

    High: 76 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 65. Northeast wind around 15 mph.

    Low: 65 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 76. North wind 10 to 15 mph.

    High: 76 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 68. Northeast wind 5 to 10 mph.

    Low: 68 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 77. North wind around 5 mph.

    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

  • Monday Night

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

    Low: 69 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 76. Breezy, with a northeast wind around 20 mph.
Tonight
Mostly clear, with a low around 65. Northeast wind around 15 mph.
Saturday
Sunny, with a high near 76. North wind 10 to 15 mph.
Saturday Night
Mostly clear, with a low around 68. Northeast wind 5 to 10 mph.
Sunday
Sunny, with a high near 77. North wind around 5 mph.
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 70.
Wednesday
A slight chance of showers. Sunny, with a high near 78. Chance of precipitation is 10%.
Wednesday Night
A slight chance of showers. Mostly clear, with a low around 70. Chance of precipitation is 10%.
Thursday
Sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Plantation Key FL
 24.97°N 80.56°W (Elev. 0 ft)
Last Update:
1:40 pm EDT Mar 20, 2026
Forecast Valid:
2pm EDT Mar 20, 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