FNUS52 KKEY 280830 FWFKEY Fire Weather Planning Forecast for the Florida Keys National Weather Service Key West FL 430 AM EDT Fri Aug 28 2026 .Discussion... Chances of showers and thunderstorms expected for the next several days as ample moisture remains across the Keys, except slight chances for tonight. Relative humidity values are expected to recover to the upper 80s percent overnight with min RH values in the mid 60s during the afternoon hours, except low to mid 50s for Big Pine Key. 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>078-290115- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the cities of Key Largo, Marathon, and Key West 430 AM EDT Fri Aug 28 2026 Today Tonight Sat Cloud Cover Mclear Mclear Mclear Chance Precip (%) 30 20 40 Chance of Thunder (%) 30 20 40 Weather Type Tstms Tstms Tstms Max/Min Temp 92 82 92 Min/Max RH % 64 88 64 Wind 20ft AM (mph) SE 6 E 6 Wind 20ft PM (mph) E 5 E 5 E 5 Precip Duration 2 1 2 Precip Begin 6 AM Continuing Continuing Precip End Continuing Continuing Continuing Precip Amount 0.05 0.05 0.08 Mixing Hgt(ft-agl) 3400 1900 3300 Transport Wnd (mph) E 8 E 15 E 12 Dispersion Index 28 8 41 Max LVORI 4 4 3 Remarks...None. $$ .FORECAST FOR DAYS 3 THROUGH 7... .SATURDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 80s. East winds around 10 mph. .SUNDAY...Mostly sunny with a chance of showers and thunderstorms. Highs in the lower 90s. East winds around 5 mph. .SUNDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 80s. East winds around 10 mph. .MONDAY...Mostly sunny with a chance of showers and thunderstorms. Highs in the lower 90s. East winds around 5 mph. .MONDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 80s. East winds around 10 mph. .TUESDAY...Mostly sunny with a chance of showers and thunderstorms. Highs around 90. East winds around 5 mph. .TUESDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 80s. East winds around 10 mph. .WEDNESDAY...Mostly sunny with a chance of showers and thunderstorms. Highs around 90. East winds around 5 mph. .WEDNESDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 80s. East winds around 10 mph. .THURSDAY...Mostly sunny with a chance of showers and thunderstorms. Highs around 90. East winds around 5 mph. $$ MJV