Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73° N Lon: 81.05° W Elev: 13 ft.

Fair

83°F

28°C

Humidity 82%
Wind Speed S 5 mph
Barometer 29.99 in (1015.3 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 13 Aug 4:53 am EDT
Detailed forecast for

Monroe Middle Keys

Today
Partly cloudy with a slight chance of showers and thunderstorms. Highs near 90. East to southeast winds near 5 mph, becoming light and variable. Chance of rain 20 percent.
Tonight
Partly cloudy with a slight chance of showers and thunderstorms. Lows in the lower to mid 80s. Light and variable winds, becoming east to southeast and increasing to near 10 mph. Chance of rain 20 percent.
Friday
Partly cloudy with a chance of showers and thunderstorms. Highs near 90. East winds near 10 mph, increasing to 10 to 15 mph. Chance of rain 30 percent.
Friday Night
Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 80s. East to southeast winds 10 to 15 mph. Chance of rain 40 percent.
Saturday
Partly cloudy with a chance of showers and thunderstorms. Highs near 90. East to southeast winds 10 to 15 mph, decreasing to near 10 mph. Chance of rain 40 percent.
Saturday Night
Partly cloudy with a chance of showers and a slight chance of thunderstorms. Lows in the lower to mid 80s. chance of rain 30 percent.
Sunday And Sunday Night
Mostly clear. Highs in the lower 90s. Lows in the lower to mid 80s.
Monday Through Wednesday
Mostly clear with a slight chance of showers. Highs near 90. Lows in the lower to mid 80s. Chance of rain 10 percent.



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359 AM EDT Thu Aug 13 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database