FNUS52 KKEY 120917 FWFKEY Fire Weather Planning Forecast for the Florida Keys National Weather Service Key West FL 417 AM EST Fri Dec 12 2025 .Discussion... Low rain chances are expected for today and tonight. Breezes will be light to gentle. This will promote poor to fair dispersion indices. Min RH values will dip just below 60% today before recovering tonight. Over the weekend, a front will approach the Keys resulting in elevated rain chances and freshening breezes. FLZ076>078-130245- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the cities of Key Largo, Marathon, and Key West 417 AM EST Fri Dec 12 2025 Today Tonight Sat Cloud Cover Pcldy Pcldy Pcldy Chance Precip (%) 0 10 30 Chance of Thunder (%) 0 0 0 Weather Type None Showers Showers Max/Min Temp 79 71 80 Min/Max RH % 59 86 72 Wind 20ft AM (mph) NE 6 E 6 Wind 20ft PM (mph) E 6 E 6 E 7 Precip Duration 1 2 Precip Begin 7 PM Continuing Precip End Continuing Continuing Precip Amount 0.00 0.00 0.04 Mixing Hgt(ft-agl) 2900 1600 3200 Transport Wnd (mph) E 14 E 13 E 14 Dispersion Index 39 14 43 Max LVORI 3 4 3 Remarks...None. $$ .FORECAST FOR DAYS 3 THROUGH 7... .SATURDAY NIGHT...Cloudy with showers likely and a slight chance of thunderstorms. Lows in the lower 70s. East winds around 5 mph. .SUNDAY...Partly sunny with a chance of showers. Highs in the upper 70s. North winds around 5 mph. .SUNDAY NIGHT...Partly cloudy with a slight chance of showers. Lows in the upper 60s. North winds around 10 mph. .MONDAY...Sunny with a slight chance of showers. Highs in the mid 70s. North winds around 15 mph. .MONDAY NIGHT...Partly cloudy with a slight chance of showers. Lows in the upper 60s. Northeast winds around 15 mph. .TUESDAY...Sunny with a slight chance of showers. Highs in the mid 70s. Northeast winds around 10 mph. .TUESDAY NIGHT...Partly cloudy with a slight chance of showers. Lows around 70. Northeast winds around 10 mph. .WEDNESDAY...Mostly sunny with a slight chance of showers. Highs in the upper 70s. East winds around 10 mph. .WEDNESDAY NIGHT...Partly cloudy with a slight chance of showers. Lows in the lower 70s. East winds around 10 mph. .THURSDAY...Partly sunny with a slight chance of showers. Highs around 80. East winds around 10 mph. $$