FPUS52 KKEY 160756 ZFPKEY Zone Forecasts for the Florida Keys National Weather Service Key West FL 356 AM EDT Sat May 16 2026 FLZ076>078-162100- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the communities of Key Largo, Marathon, and Key West 356 AM EDT Sat May 16 2026 .TODAY...Mostly sunny this morning, then becoming partly sunny. A slight chance of showers and thunderstorms. Highs 85 to 90. East to southeast winds near 5 mph, increasing to 10 to 15 mph. Chance of rain 20 percent. .TONIGHT...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows near 80. East winds near 15 mph. Chance of rain 40 percent. .SUNDAY...Partly sunny in the morning, then becoming mostly sunny. A chance of showers and a slight chance of thunderstorms. Highs 85 to 90. East winds 10 to 15 mph. Chance of rain 50 percent. .SUNDAY NIGHT...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Becoming breezy. Lows in the lower 80s. East winds near 15 mph, increasing to 15 to 20 mph. Chance of rain 40 percent. .MONDAY...Mostly sunny with a chance of showers and a slight chance of thunderstorms. Breezy. Highs 85 to 90. East winds 15 to 20 mph. Chance of rain 40 percent. .MONDAY NIGHT...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Breezy. Lows in the lower 80s. Chance of rain 30 percent. .TUESDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Highs 85 to 90. Chance of rain 30 percent. .TUESDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Lows around 80. Chance of rain 20 percent. .WEDNESDAY THROUGH THURSDAY...Partly cloudy with a slight chance of showers and thunderstorms. Highs 85 to 90. Lows in the lower 80s. Chance of rain 10 percent. .THURSDAY NIGHT AND FRIDAY...Partly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 80s. Highs in the upper 80s to lower 90s. Chance of rain 20 percent. $$