FPUS52 KKEY 160800 ZFPKEY Zone Forecasts for the Florida Keys National Weather Service Key West FL 400 AM EDT Fri Oct 16 2026 FLZ076>078-162145- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the communities of Key Largo, Marathon, and Key West 400 AM EDT Fri Oct 16 2026 .TODAY...Mostly sunny with a chance of showers and a slight chance of thunderstorms. Highs in the upper 80s. East winds 5 to 10 mph. Chance of rain 30 percent. .TONIGHT...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows near 80. East winds near 5 mph. Chance of rain 50 percent. .SATURDAY...Showers likely with a chance of thunderstorms. Highs in the mid 80s. North winds 5 to 10 mph. Chance of rain 60 percent. .SATURDAY NIGHT...Showers with a chance of thunderstorms. Becoming breezy with lows in the upper 70s. Northeast winds near 15 mph, increasing to 15 to 20 mph. Chance of rain 80 percent. .SUNDAY...Showers with a chance of thunderstorms. Breezy with highs in the mid 80s. Northeast winds 15 to 20 mph. Chance of rain 80 percent. .SUNDAY NIGHT...Showers likely with a chance of thunderstorms. Becoming windy with lows in the mid 70s. Chance of rain 60 percent. .MONDAY...Showers likely with a slight chance of thunderstorms. Windy with highs in the mid 80s. Chance of rain 60 percent. .MONDAY NIGHT AND TUESDAY...Partly cloudy. A chance of showers and a slight chance of thunderstorms. Windy. Lows in the mid 70s. Highs in the mid 80s. Chance of rain 30 percent. .TUESDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Windy with lows in the mid 70s. Chance of rain 20 percent. .WEDNESDAY...Mostly sunny with a chance of showers. Windy with highs in the mid 80s. Chance of rain 30 percent. .WEDNESDAY NIGHT...Mostly clear with a slight chance of showers. Windy with lows in the mid 70s. Chance of rain 20 percent. .THURSDAY...Sunny with a chance of showers. Breezy with highs in the mid 80s. Chance of rain 40 percent. $$