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

Early Heat Wave in the West; Fire Concerns in the Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Elevated to critical fire weather conditions are expected today across the High Plains and southern Plains. Lake effect snow downwind of the Great Lakes will taper off today. Read More >

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Mostly Cloudy

73°F

23°C

Humidity 84%
Wind Speed NE 7 G 20 mph
Barometer 30.02 in (1016.5 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 17 Mar 11:53 am EDT
Extended Forecast for

Lower Matecumbe Beach FL

  • This Afternoon

    This Afternoon: A chance of showers. Cloudy, with a high near 76. North wind around 15 mph. Chance of precipitation is 50%.

    High: 76 °F

    Chance
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms. Cloudy, with a low around 64. North wind around 15 mph. Chance of precipitation is 40%.

    Low: 64 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm. Cloudy, with a high near 74. North wind around 15 mph. Chance of precipitation is 60%.

    High: 74 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Cloudy, with a low around 67. Breezy, with a northeast wind 15 to 20 mph. Chance of precipitation is 60%.

    Low: 67 °F

    Showers
    Likely and
    Breezy

  • Thursday

    Thursday: A chance of showers. Mostly cloudy, with a high near 76. Breezy, with a north wind 15 to 20 mph. Chance of precipitation is 40%.

    High: 76 °F

    Chance
    Showers and
    Breezy

  • Thursday Night

    Thursday Night: A slight chance of showers. Mostly cloudy, with a low around 66. Chance of precipitation is 20%.

    Low: 66 °F

    Slight Chance
    Showers

  • Friday

    Friday: A slight chance of showers. Mostly sunny, with a high near 76. Chance of precipitation is 20%.

    High: 76 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 67. Breezy.

    Low: 67 °F

    Mostly Clear
    and Breezy

  • Saturday

    Saturday: Sunny, with a high near 75. Breezy.

    High: 75 °F

    Sunny and
    Breezy then
    Sunny

Detailed Forecast

This Afternoon
A chance of showers. Cloudy, with a high near 76. North wind around 15 mph. Chance of precipitation is 50%.
Tonight
A chance of showers and thunderstorms. Cloudy, with a low around 64. North wind around 15 mph. Chance of precipitation is 40%.
Wednesday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 74. North wind around 15 mph. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm. Cloudy, with a low around 67. Breezy, with a northeast wind 15 to 20 mph. Chance of precipitation is 60%.
Thursday
A chance of showers. Mostly cloudy, with a high near 76. Breezy, with a north wind 15 to 20 mph. Chance of precipitation is 40%.
Thursday Night
A slight chance of showers. Mostly cloudy, with a low around 66. Chance of precipitation is 20%.
Friday
A slight chance of showers. Mostly sunny, with a high near 76. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 67. Breezy.
Saturday
Sunny, with a high near 75. Breezy.
Saturday Night
Mostly clear, with a low around 70.
Sunday
Sunny, with a high near 77.
Sunday Night
Mostly clear, with a low around 71.
Monday
A slight chance of showers. Sunny, with a high near 77. Chance of precipitation is 10%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lower Matecumbe Beach FL
 24.87°N 80.73°W (Elev. 0 ft)
Last Update:
11:15 am EDT Mar 17, 2026
Forecast Valid:
12pm EDT Mar 17, 2026-6pm EDT Mar 23, 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