FNUS52 KKEY 250833 FWFKEY Fire Weather Planning Forecast for the Florida Keys National Weather Service Key West FL 433 AM EDT Tue Aug 25 2026 .Discussion... Chances of showers and thunderstorms expected for the next several days as moisture increases across the Keys. Relative humidity values are expected to recover to near 90 percent overnight with min RH values in the lower to mid 60s during the afternoon hours. Light to gentle east to southeasterly breezes are expected for the next several days peaking during the evenings and overnight and lulling in the afternoons. Breezes may occasionally become gentle to moderate. Dispersion indices are expected to be generally fair to good over the next couple of days. FLZ076>078-260130- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the cities of Key Largo, Marathon, and Key West 433 AM EDT Tue Aug 25 2026 Today Tonight Wed Cloud Cover Mclear Pcldy Pcldy Chance Precip (%) 30 50 50 Chance of Thunder (%) 30 50 50 Weather Type Tstms Tstms Tstms Max/Min Temp 92 81 91 Min/Max RH % 64 90 65 Wind 20ft AM (mph) E 5 SE 7 Wind 20ft PM (mph) E 5 E 6 SE 6 Precip Duration 2 2 2 Precip Begin 6 AM Continuing Continuing Precip End Continuing Continuing Continuing Precip Amount 0.02 0.07 0.06 Mixing Hgt(ft-agl) 3700 500 3600 Transport Wnd (mph) E 9 E 13 SE 13 Dispersion Index 33 11 46 Max LVORI 4 4 4 Remarks...None. $$ .FORECAST FOR DAYS 3 THROUGH 7... .WEDNESDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 80s. East winds around 10 mph. .THURSDAY...Mostly sunny with a chance of showers and thunderstorms. Highs around 90. Southeast winds around 5 mph. .THURSDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 80s. East winds around 5 mph. .FRIDAY...Mostly sunny with a chance of showers and thunderstorms. Highs around 90. East winds around 5 mph. .FRIDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 80s. East winds around 10 mph. .SATURDAY...Mostly sunny with a chance of showers and thunderstorms. Highs in the lower 90s. East winds around 5 mph. .SATURDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 80s. East winds around 10 mph. .SUNDAY...Mostly sunny with a chance of showers and thunderstorms. Highs in the lower 90s. East winds around 10 mph. .SUNDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 80s. East winds around 10 mph. .MONDAY...Mostly sunny with showers likely and a chance of thunderstorms. Highs around 90. East winds around 10 mph. $$ MJV