Expires:202405191200;;442257 FPUS52 KKEY 182018 ZFPKEY Zone Forecasts for the Florida Keys National Weather Service Key West FL 418 PM EDT Sat May 18 2024 FLZ076>078-191200- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the communities of Key Largo, Marathon, and Key West 418 PM EDT Sat May 18 2024 ...HEAT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING... ...HEAT ADVISORY MAY BE REQUIRED SUNDAY... .TONIGHT...Partly cloudy with a slight chance of showers. Lows in the lower to mid 80s. Southeast winds 5 to 10 mph, increasing to 10 to 15 mph. Chance of rain 10 percent. .SUNDAY...Mostly sunny with a slight chance of showers. Highs in the lower to mid 90s. Southeast to south winds 10 to 15 mph, becoming southwest to west 5 to 10 mph in the afternoon. Chance of rain 10 percent. Heat index values up to 110. .SUNDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and a slight chance of thunderstorms. Lows near 80. West to northwest winds 5 to 10 mph. Chance of rain 40 percent. .MONDAY...Partly cloudy with a chance of showers and a slight chance of thunderstorms. Highs near 90. West winds 5 to 10 mph. Chance of rain 30 percent. .MONDAY NIGHT...Partly cloudy with a chance of showers and a slight chance of thunderstorms. Lows near 80. Northwest winds near 10 mph. Chance of rain 40 percent. .TUESDAY...Partly cloudy with a chance of showers and a slight chance of thunderstorms. Highs near 90. Chance of rain 30 percent. .TUESDAY NIGHT THROUGH SATURDAY...Mostly clear with a slight chance of showers and thunderstorms. Lows in the lower 80s. Highs near 90. Chance of rain 20 percent. $$ CLR