FNUS52 KKEY 310904 FWFKEY Fire Weather Planning Forecast for the Florida Keys National Weather Service Key West FL 404 AM EST Sat Jan 31 2026 .Discussion... Rain chances will remain well above normal today as a line of showers ahead of an approaching cold front. The window of opportunity for these showers will be during the afternoon and early evening, but thunderstorms are not expected with this activity. Light to gentle northwesterly transport winds in the morning will veer northerly and freshen dramatically by tonight, and strong northerly winds will continue through Sunday morning before having the opportunity to taper off. RH values are not necessarily a concern ahead of the front, but significantly dry air behind the front will filter in on Sunday, and will bring minimum RH value down to near 50%. FLZ076>078-010330- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the cities of Key Largo, Marathon, and Key West 404 AM EST Sat Jan 31 2026 Today Tonight Sun Cloud Cover Pcldy Pcldy Pcldy Chance Precip (%) 60 10 0 Chance of Thunder (%) 0 0 0 Weather Type Showers Showers None Max/Min Temp 70 40 58 Min/Max RH % 70 86 50 Wind 20ft AM (mph) NW 6 NW 18 G27 Wind 20ft PM (mph) NW 13 G24 NW 20 G32 NW 14 Precip Duration 2 1 Precip Begin 7 AM Continuing Precip End Continuing 6 AM Precip Amount 0.07 0.01 0.00 Mixing Hgt(ft-agl) 2400 2200 4000 Transport Wnd (mph) W 30 NW 31 NW 26 Dispersion Index 31 51 69 Max LVORI 4 3 3 Remarks...None. $$ .FORECAST FOR DAYS 3 THROUGH 7... .SUNDAY NIGHT...Mostly clear. Lows in the upper 40s. Northwest winds around 10 mph. .MONDAY...Sunny. Highs around 60. Northwest winds around 10 mph. .MONDAY NIGHT...Mostly clear. Lows in the lower 50s. North winds around 10 mph. .TUESDAY...Sunny. Highs in the upper 60s. North winds around 5 mph. .TUESDAY NIGHT...Partly cloudy. Lows around 60. Northeast winds around 5 mph. .WEDNESDAY...Mostly sunny. Highs around 70. East winds around 5 mph. .WEDNESDAY NIGHT...Mostly clear. Lows in the lower 60s. East winds around 5 mph. .THURSDAY...Sunny with a slight chance of showers. Highs around 70. North winds around 5 mph. .THURSDAY NIGHT...Partly cloudy with a slight chance of showers. Lows in the mid 50s. West winds around 10 mph. .FRIDAY...Sunny. Highs in the mid 60s. Northwest winds around 10 mph. $$