FNUS52 KKEY 300844 FWFKEY Fire Weather Planning Forecast for the Florida Keys National Weather Service Key West FL 444 AM EDT Wed Sep 30 2026 .Discussion... Moisture will continue to be transported northward from the western Caribbean today, resulting in well above normal rain/thunder chances. This will also help to keep afternoon min RH values in the 70 percentile. East to southeast winds have returned across the region and will steadily increase through the afternoon. Expect breezy conditions to develop and continue through Thursday night. FLZ076>078-302315- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the cities of Key Largo, Marathon, and Key West 444 AM EDT Wed Sep 30 2026 Today Tonight Thu Cloud Cover Pcldy Pcldy Pcldy Chance Precip (%) 70 70 70 Chance of Thunder (%) 50 50 50 Weather Type Tstms Tstms Tstms Max/Min Temp 88 78 89 Min/Max RH % 71 94 73 Wind 20ft AM (mph) E 7 E 12 Wind 20ft PM (mph) E 10 E 11 E 12 Precip Duration 9 12 10 Precip Begin 6 AM Continuing Continuing Precip End Continuing Continuing Continuing Precip Amount 0.46 0.43 0.36 Mixing Hgt(ft-agl) 3300 1200 2700 Transport Wnd (mph) E 18 E 21 E 21 Dispersion Index 34 23 42 Max LVORI 4 4 4 Remarks...None. $$ .FORECAST FOR DAYS 3 THROUGH 7... .THURSDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows around 80. East winds around 15 mph. .FRIDAY...Mostly cloudy with a chance of showers and thunderstorms. Highs in the upper 80s. East winds around 10 mph. .FRIDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows around 80. East winds around 10 mph. .SATURDAY...Mostly sunny with a chance of showers and thunderstorms. Highs in the upper 80s. East winds around 10 mph. .SATURDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows around 80. East winds around 10 mph. .SUNDAY...Mostly sunny with a chance of showers and thunderstorms. Highs in the upper 80s. East winds around 10 mph. .SUNDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Lows around 80. East winds around 10 mph. .MONDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs in the upper 80s. Southeast winds around 5 mph. .MONDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Lows in the upper 70s. Southeast winds around 5 mph. .TUESDAY...Mostly sunny with a chance of showers and thunderstorms. Highs in the upper 80s. Southeast winds around 5 mph. $$