FPUS52 KKEY 220800 ZFPKEY Zone Forecasts for the Florida Keys National Weather Service Key West FL 400 AM EDT Wed Apr 22 2026 FLZ076>078-222315- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the communities of Key Largo, Marathon, and Key West 400 AM EDT Wed Apr 22 2026 .TODAY...Mostly sunny and breezy. Highs in the lower 80s. East winds 15 to 20 mph. .TONIGHT...Increasing cloudiness. A slight chance of showers. Breezy in the evening. Lows in the lower 70s. East winds 15 to 20 mph, decreasing to near 15 mph. Chance of rain 20 percent. .THURSDAY...Partly sunny with a chance of showers and a slight chance of thunderstorms. Highs in the lower 80s. East winds near 15 mph. Chance of rain 30 percent. .THURSDAY NIGHT...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows in the lower 70s. East winds near 15 mph, becoming east to southeast and decreasing to near 10 mph. Chance of rain 40 percent. .FRIDAY...Partly sunny in the morning, then becoming mostly sunny. A chance of showers and a slight chance of thunderstorms. Highs in the lower 80s. East to southeast winds near 10 mph, decreasing to 5 to 10 mph. Chance of rain 40 percent. .FRIDAY NIGHT...Partly cloudy with a slight chance of showers. Lows in the mid 70s. Chance of rain 20 percent. .SATURDAY...Mostly sunny with a slight chance of showers. Highs in the lower to mid 80s. Chance of rain 10 percent. .SATURDAY NIGHT THROUGH TUESDAY...Mostly clear. Lows in the mid 70s. Highs in the lower to mid 80s. $$ MJV