Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

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

Partly Cloudy

78°F

26°C

Humidity 79%
Wind Speed Calm
Barometer 29.92 in (1013.0 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 1 May 12:53 am EDT
Detailed forecast for

Monroe Middle Keys

Tonight
Mostly clear. Lows in the mid 70s. Southeast winds near 5 mph, becoming light and variable.
Friday
Mostly sunny. Highs in the mid 80s. Southeast winds 5 to 10 mph.
Friday Night
Mostly clear. Lows in the upper 70s. Southeast winds 5 to 10 mph, increasing to 10 to 15 mph.
Saturday
Mostly sunny with a slight chance of showers. Highs in the mid 80s. South winds 10 to 15 mph. Chance of rain 10 percent.
Saturday Night
Partly cloudy with a chance of showers with a slight chance of thunderstorms. Lows in the mid to upper 70s. south winds 5 to 10 mph. Chance of rain 30 percent.
Sunday
Mostly cloudy with a chance of showers and thunderstorms. Highs in the lower to mid 80s. Chance of rain 40 percent.
Sunday Night
Mostly cloudy with a chance of showers and thunderstorms. Lows in the mid 70s. Chance of rain 50 percent.
Monday And Monday Night
Mostly cloudy with a chance of showers and thunderstorms. Highs in the lower to mid 80s. Lows in the mid 70s. Chance of rain 30 percent.
Tuesday And Tuesday Night
Mostly cloudy with a slight chance of showers. Highs in the mid 80s. Lows in the upper 70s. Chance of rain 10 percent.
Wednesday Through Thursday
Mostly clear. Highs in the mid 80s. Lows in the upper 70s.



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403 PM EDT Thu Apr 30 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database