FNUS52 KKEY 010913 FWFKEY Fire Weather Planning Forecast for the Florida Keys National Weather Service Key West FL 513 AM EDT Mon Jun 1 2026 .Discussion... A moist air mass remains in place, and will keep the environment primed for showers and thunderstorms. Chances along the island chain are generally around 30 percent, but the best chances will be along the Upper Keys. Light and variable winds may also become southwesterly at times during the day, which would support cloudline development and periods of slow moving showers over the Keys. Relative humidity values will stay elevated while this air mass lingers with nighttime minimums around 65 to 70 percent, and recovering to near 90 percent during the daytime. FLZ076>078-020015- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the cities of Key Largo, Marathon, and Key West 513 AM EDT Mon Jun 1 2026 Today Tonight Tue Cloud Cover Pcldy Pcldy Pcldy Chance Precip (%) 30 10 20 Chance of Thunder (%) 20 10 20 Weather Type Tstms Tstms Tstms Max/Min Temp 90 80 90 Min/Max RH % 67 88 64 Wind 20ft AM (mph) Lgt/Var Lgt/Var Wind 20ft PM (mph) Lgt/Var Lgt/Var Lgt/Var Precip Duration 1 1 1 Precip Begin 6 AM Continuing Continuing Precip End Continuing Continuing Continuing Precip Amount 0.08 0.03 0.01 Mixing Hgt(ft-agl) 3200 600 2800 Transport Wnd (mph) W 6 W 7 NW 6 Dispersion Index 17 6 19 Max LVORI 5 6 5 Remarks...None. $$ .FORECAST FOR DAYS 3 THROUGH 7... .TUESDAY NIGHT...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows around 80. Southwest winds around 5 mph. .WEDNESDAY...Mostly cloudy with a chance of showers and thunderstorms. Highs in the upper 80s. Light winds. .WEDNESDAY NIGHT...Mostly cloudy with showers likely and a chance of thunderstorms. Lows in the upper 70s. Northeast winds around 5 mph. .THURSDAY...Mostly cloudy with showers likely and a chance of thunderstorms. Highs in the mid 80s. Northeast winds around 10 mph. .THURSDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 70s. Northeast winds around 10 mph. .FRIDAY...Partly sunny with a chance of showers and thunderstorms. Highs in the mid 80s. East winds around 10 mph. .FRIDAY NIGHT...Partly cloudy with a chance of showers. Lows in the upper 70s. East winds around 10 mph. .SATURDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs in the upper 80s. East winds around 10 mph. .SATURDAY NIGHT...Partly cloudy with a chance of showers and a slight chance of thunderstorms. Lows around 80. East winds around 10 mph. .SUNDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs in the upper 80s. East winds around 10 mph. $$