FPUS52 KKEY 091959 ZFPKEY Zone Forecasts for the Florida Keys National Weather Service Key West FL 359 PM EDT Mon Mar 9 2026 FLZ076>078-101115- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the communities of Key Largo, Marathon, and Key West 359 PM EDT Mon Mar 9 2026 .TONIGHT...Partly cloudy with a slight chance of showers. Lows in the mid 70s. East winds 10 to 15 mph. Chance of rain 10 percent. .TUESDAY...Mostly sunny with a slight chance of showers. Highs in the lower 80s. East winds 10 to 15 mph. Chance of rain 10 percent. .TUESDAY NIGHT...Mostly clear with a slight chance of showers. Lows in the mid 70s. East winds near 15 mph. Chance of rain 10 percent. .WEDNESDAY...Mostly sunny with a slight chance of showers. Highs in the lower 80s. East to southeast winds 10 to 15 mph. Chance of rain 10 percent. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A slight chance of showers. Lows in the lower to mid 70s. Southeast winds 10 to 15 mph. Chance of rain 10 percent. .THURSDAY...Partly cloudy with a slight chance of showers. Highs in the lower 80s. Chance of rain 20 percent. .THURSDAY NIGHT...Partly to mostly cloudy with a slight chance of showers. Lows in the lower 70s. Chance of rain 20 percent. .FRIDAY...Partly to mostly cloudy with a chance of showers and a slight chance of thunderstorms. Highs in the lower 80s. Chance of rain 30 percent. .FRIDAY NIGHT THROUGH SATURDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 70s. Highs in the lower 80s. Chance of rain 20 percent. .SUNDAY...Partly cloudy with a chance of showers and a slight chance of thunderstorms. Highs in the lower 80s. Chance of rain 30 percent. .SUNDAY NIGHT AND MONDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows in the lower 70s. Highs in the lower 80s. Chance of rain 30 percent. $$