FNUS52 KKEY 180825 FWFKEY Fire Weather Planning Forecast for the Florida Keys National Weather Service Key West FL 425 AM EDT Sun Oct 18 2026 .Discussion... A cold front will pass over the Florida Keys this morning. Winds freshened rapidly before sunrise, and windy conditions are on track to persist through Tuesday. Shower chances will remain elevated today and tonight while the front lingers near the island chain. Min RH values today will remain higher, lower to mid 70s percent, but will decrease to the upper 60s on Monday. FLZ076>078-182315- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the cities of Key Largo, Marathon, and Key West 425 AM EDT Sun Oct 18 2026 Today Tonight Mon Cloud Cover Pcldy Pcldy Pcldy Chance Precip (%) 60 50 40 Chance of Thunder (%) 20 20 20 Weather Type Tstms Tstms Tstms Max/Min Temp 85 76 86 Min/Max RH % 74 91 69 Wind 20ft AM (mph) NE 15 NE 16 Wind 20ft PM (mph) NE 16 NE 16 G25 NE 16 Precip Duration 10 4 2 Precip Begin 6 AM Continuing Continuing Precip End Continuing Continuing Continuing Precip Amount 0.41 0.61 0.67 Mixing Hgt(ft-agl) 2800 1700 3700 Transport Wnd (mph) E 21 NE 29 NE 24 Dispersion Index 41 40 61 Max LVORI 4 4 4 Remarks...None. $$ .FORECAST FOR DAYS 3 THROUGH 7... .MONDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Lows in the mid 70s. Northeast winds around 15 mph. .TUESDAY...Sunny with a slight chance of showers. Highs in the mid 80s. Northeast winds around 15 mph. .TUESDAY NIGHT...Mostly clear with a slight chance of showers. Lows in the mid 70s. Northeast winds around 15 mph. .WEDNESDAY...Sunny with a slight chance of showers. Highs in the mid 80s. North winds around 15 mph. .WEDNESDAY NIGHT...Mostly clear with a slight chance of showers. Lows in the mid 70s. Northeast winds around 15 mph. .THURSDAY...Sunny with a slight chance of showers and thunderstorms. Highs in the lower 80s. Northeast winds around 15 mph. .THURSDAY NIGHT...Mostly clear with a slight chance of showers. Lows in the mid 70s. Northeast winds around 10 mph. .FRIDAY...Sunny with a chance of showers. Highs in the lower 80s. North winds around 10 mph. .FRIDAY NIGHT...Mostly clear with a chance of showers. Lows in the mid 70s. Northeast winds around 10 mph. .SATURDAY...Sunny with a chance of showers. Highs in the lower 80s. North winds around 15 mph. $$