FPUS52 KKEY 210800 ZFPKEY Zone Forecasts for the Florida Keys National Weather Service Key West FL 400 AM EDT Tue Apr 21 2026 FLZ076>078-212300- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the communities of Key Largo, Marathon, and Key West 400 AM EDT Tue Apr 21 2026 .TODAY...Partly sunny this morning, then becoming mostly sunny in the afternoon. A chance of showers. Windy. Highs near 80. Northeast winds near 20 mph, becoming northeast to east and increasing to 20 to 25 mph. Chance of rain 30 percent. .TONIGHT...Partly cloudy and windy. Lows in the lower 70s. Northeast to east winds 20 to 25 mph, decreasing to near 20 mph. .WEDNESDAY...Partly sunny. Windy, becoming breezy. Highs near 80. East winds near 20 mph, decreasing to 15 to 20 mph. .WEDNESDAY NIGHT...Mostly cloudy with 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...Mostly cloudy with a chance of showers. 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. Chance of rain 40 percent. .FRIDAY...Partly cloudy with a chance of showers and a slight chance of thunderstorms. Highs in the lower 80s. Chance of rain 40 percent. .FRIDAY NIGHT...Partly cloudy with a slight chance of showers. Lows in the mid 70s. Chance of rain 10 percent. .SATURDAY THROUGH MONDAY...Mostly clear. Highs in the lower to mid 80s. Lows in the mid 70s. $$ MJV