FNUS52 KKEY 180833 FWFKEY Fire Weather Planning Forecast for the Florida Keys National Weather Service Key West FL 433 AM EDT Sat Jul 18 2026 .Discussion... Temperatures will remain slightly above normal with highs near 90, overnight lows in the lower 80s. Dew points will be in the mid to upper 70s. Minimum RH values will be 60% to 65% during the day, recovering to near 85% overnight. Waves of Sahara dust will continue to dominate the region for the next few days, continuing to yield to mainly slight chances. Most of the activity will continue to remain across the SE Gulf waters and northward. FLZ076>078-190130- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the cities of Key Largo, Marathon, and Key West 433 AM EDT Sat Jul 18 2026 Today Tonight Sun Cloud Cover Pcldy Pcldy Mclear Chance Precip (%) 20 20 20 Chance of Thunder (%) 20 20 20 Weather Type Tstms Tstms Tstms Max/Min Temp 91 82 91 Min/Max RH % 63 86 64 Wind 20ft AM (mph) SE 7 SE 7 Wind 20ft PM (mph) SE 6 SE 6 S 6 Precip Duration 1 1 1 Precip Begin 6 AM Continuing Continuing Precip End Continuing Continuing Continuing Precip Amount 0.01 0.00 0.00 Mixing Hgt(ft-agl) 3800 1600 3800 Transport Wnd (mph) SE 14 SE 16 SE 12 Dispersion Index 47 12 47 Max LVORI 3 4 3 Remarks...None. $$ .FORECAST FOR DAYS 3 THROUGH 7... .SUNDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 80s. Southeast winds around 5 mph. .MONDAY...Sunny with a slight chance of showers and thunderstorms. Highs in the lower 90s. Southeast winds around 5 mph. .MONDAY NIGHT...Partly cloudy. Lows in the lower 80s. Southeast winds around 5 mph. .TUESDAY...Sunny. Highs around 90. Southeast winds around 10 mph. .TUESDAY NIGHT...Mostly clear. Lows in the lower 80s. East winds around 5 mph. .WEDNESDAY...Sunny. Highs around 90. Southeast winds around 5 mph. .WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 80s. East winds around 5 mph. .THURSDAY...Sunny. Highs around 90. East winds around 5 mph. .THURSDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 80s. East winds around 5 mph. .FRIDAY...Sunny with a slight chance of showers. Highs around 90. East winds around 5 mph. $$ MJV