FPUS52 KKEY 100759 ZFPKEY Zone Forecasts for the Florida Keys National Weather Service Key West FL 359 AM EDT Tue Sep 10 2024 FLZ076>078-102000- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the communities of Key Largo, Marathon, and Key West 359 AM EDT Tue Sep 10 2024 ...HEAT ADVISORY IN EFFECT FROM 10 AM THIS MORNING TO 7 PM EDT THIS EVENING... .TODAY...Partly sunny with a chance of showers and a slight chance of thunderstorms. Highs in the lower 90s. East to southeast winds near 5 mph. Chance of rain 40 percent. Heat index values up to 110. .TONIGHT...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows in the lower 80s. Northeast to east winds near 5 mph, becoming east to southeast 5 to 10 mph. Chance of rain 40 percent. .WEDNESDAY...Partly sunny with a chance of showers and a slight chance of thunderstorms. Highs in the lower 90s. Southeast winds 5 to 10 mph. Chance of rain 30 percent. Heat index values up to 110. .WEDNESDAY NIGHT...Partly cloudy with a chance of showers and a slight chance of thunderstorms. Lows in the lower 80s. Southeast winds 5 to 10 mph. Chance of rain 30 percent. .THURSDAY...Partly sunny with a slight chance of showers and thunderstorms. Highs in the lower 90s. Southeast to south winds near 5 mph, becoming variable in the afternoon. Chance of rain 20 percent. Heat index values up to 110. .THURSDAY NIGHT AND FRIDAY...Partly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 80s. Highs in the lower 90s. Chance of rain 20 percent. .FRIDAY NIGHT...Partly cloudy with a chance of showers and a slight chance of thunderstorms. Lows in the lower 80s. Chance of rain 30 percent. .SATURDAY THROUGH MONDAY...Partly cloudy with a chance of showers and a slight chance of thunderstorms. Highs in the lower 90s. Lows in the lower 80s. Chance of rain 40 percent. $$