FNUS52 KKEY 170822 FWFKEY Fire Weather Planning Forecast for the Florida Keys National Weather Service Key West FL 422 AM EDT Wed Jun 17 2026 .Discussion... A stray shower or thunderstorm is possible this morning across the Middle and Upper Keys, otherwise, mainly dry conditions expected to continue. Moisture trapped in the boundary layer will aid in allowing afternoon min RH values to remain in the 60 percentile and recover overnight to near 90 percent. Southerly breezes will remain such that dispersion indices will remain in the poor to fair category. FLZ076>078-172345- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the cities of Key Largo, Marathon, and Key West 422 AM EDT Wed Jun 17 2026 Today Tonight Thu Cloud Cover Mclear Pcldy Mclear Chance Precip (%) 10 10 10 Chance of Thunder (%) 10 10 10 Weather Type Tstms Tstms Tstms Max/Min Temp 90 81 91 Min/Max RH % 66 89 67 Wind 20ft AM (mph) SE 6 SE 6 Wind 20ft PM (mph) S 6 Lgt/Var SE 5 Precip Duration 1 1 1 Precip Begin 8 AM 8 PM Continuing Precip End 2 PM Continuing 6 PM Precip Amount 0.01 0.01 0.00 Mixing Hgt(ft-agl) 3100 1400 3200 Transport Wnd (mph) S 9 SE 8 SE 9 Dispersion Index 35 7 31 Max LVORI 4 5 4 Remarks...None. $$ .FORECAST FOR DAYS 3 THROUGH 7... .THURSDAY NIGHT...Mostly clear. Lows in the lower 80s. Southeast winds around 5 mph. .FRIDAY...Sunny with a slight chance of showers and thunderstorms. Highs in the upper 80s. Southeast winds around 5 mph. .FRIDAY NIGHT...Mostly clear with a slight chance of showers and thunderstorms. Lows in the lower 80s. Southeast winds around 5 mph. .SATURDAY...Sunny with a slight chance of showers and thunderstorms. Highs in the upper 80s. Southeast winds around 5 mph. .SATURDAY NIGHT...Mostly clear. Lows in the lower 80s. South winds around 5 mph. .SUNDAY...Sunny with a slight chance of showers and thunderstorms. Highs in the upper 80s. Light winds. .SUNDAY NIGHT...Mostly clear. Lows in the lower 80s. Southeast winds around 5 mph. .MONDAY...Sunny with a slight chance of showers. Highs around 90. Southeast winds around 5 mph. .MONDAY NIGHT...Mostly clear with a slight chance of showers and thunderstorms. Lows in the lower 80s. East winds around 5 mph. .TUESDAY...Sunny with a slight chance of showers. Highs around 90. East winds around 5 mph. $$