FPUS52 KKEY 012000 ZFPKEY Zone Forecasts for the Florida Keys National Weather Service Key West FL 400 PM EDT Mon Jun 1 2026 FLZ076>078-021030- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the communities of Key Largo, Marathon, and Key West 400 PM EDT Mon Jun 1 2026 .TONIGHT...Mostly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 80s. West winds near 5 mph. Chance of rain 10 percent. .TUESDAY...Partly sunny with a slight chance of showers and thunderstorms. Highs in the upper 80s. West to northwest winds near 5 mph, becoming southwest to west. Chance of rain 20 percent. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows near 80. West winds near 5 mph, becoming light and variable. Chance of rain 40 percent. .WEDNESDAY...Mostly cloudy with a chance of showers and thunderstorms. Highs in the mid 80s. West winds near 5 mph, becoming northwest to north and increasing to 5 to 10 mph. Chance of rain 50 percent. .WEDNESDAY NIGHT...Showers likely with a chance of thunderstorms. Lows in the upper 70s. Northeast winds 5 to 10 mph, becoming east. Chance of rain 60 percent. .THURSDAY...Showers likely with a chance of thunderstorms. Lows in the upper 70s. Highs in the mid 80s. Chance of rain 60 percent. .THURSDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 70s. Chance of rain 50 percent. .FRIDAY...Partly sunny with a chance of showers and thunderstorms. Highs in the mid 80s. Chance of rain 40 percent. .FRIDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers. Breezy with lows in the upper 70s. Chance of rain 30 percent. .SATURDAY THROUGH SUNDAY...Partly cloudy with a slight chance of showers and thunderstorms. Highs in the mid 80s. Lows near 80. Chance of rain 20 percent. .SUNDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows near 80. Chance of rain 30 percent. .MONDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs in the upper 80s. Chance of rain 20 percent. $$