FNUS52 KKEY 300827 FWFKEY Fire Weather Planning Forecast for the Florida Keys National Weather Service Key West FL 427 AM EDT Sun Aug 30 2026 .Discussion... Chances of showers and thunderstorms expected for the next several days as ample moisture remains across the Keys. Relative humidity values are expected to recover to the lower 90s percent overnight with min RH values in the mid 60s during the afternoon hours. Generally, light to gentle east to southeasterly breezes are expected for the next several days, occasionally becoming gentle to moderate breezes. Dispersion indices are expected to be generally fair over the next couple of days. FLZ076>078-310045- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the cities of Key Largo, Marathon, and Key West 427 AM EDT Sun Aug 30 2026 Today Tonight Mon Cloud Cover Pcldy Pcldy Mclear Chance Precip (%) 50 40 40 Chance of Thunder (%) 50 40 40 Weather Type Tstms Tstms Tstms Max/Min Temp 90 81 90 Min/Max RH % 67 93 66 Wind 20ft AM (mph) SE 8 E 5 Wind 20ft PM (mph) E 6 E 6 Lgt/Var Precip Duration 2 2 2 Precip Begin 6 AM Continuing Continuing Precip End Continuing Continuing Continuing Precip Amount 0.07 0.10 0.05 Mixing Hgt(ft-agl) 3200 600 3200 Transport Wnd (mph) E 10 E 15 E 10 Dispersion Index 39 12 36 Max LVORI 4 5 4 Remarks...None. $$ .FORECAST FOR DAYS 3 THROUGH 7... .MONDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 80s. East winds around 5 mph. .TUESDAY...Mostly sunny with a chance of showers and thunderstorms. Highs around 90. East winds around 5 mph. .TUESDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 80s. East winds around 10 mph. .WEDNESDAY...Partly sunny with showers likely and a chance of thunderstorms. Highs around 90. East winds around 5 mph. .WEDNESDAY NIGHT...Mostly cloudy with showers likely and a chance of thunderstorms. Lows in the lower 80s. East winds around 10 mph. .THURSDAY...Partly sunny with showers and thunderstorms likely. Highs around 90. East winds around 10 mph. .THURSDAY NIGHT...Mostly cloudy with showers and thunderstorms likely. Lows in the lower 80s. East winds around 10 mph. .FRIDAY...Partly sunny with a chance of showers and thunderstorms. Highs around 90. Southeast winds around 10 mph. .FRIDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 80s. Southeast winds around 10 mph. .SATURDAY...Mostly sunny with a chance of showers and thunderstorms. Highs around 90. Southeast winds around 5 mph. $$ MJV