FNUS52 KKEY 200929 FWFKEY Fire Weather Planning Forecast for the Florida Keys National Weather Service Key West FL 429 AM EST Tue Jan 20 2026 .Discussion... Dry air will remain entrenched across the Keys for today and tonight. Moisture will begin to increase Wednesday leading to slight chance returning to the forecast along the Island Chain. An expansive high pressure system will traverse across the eastern United States through mid week. This will result in windy conditions for today and tonight, becoming breezy for Wednesday and Wednesday evening as breezes slowly slacken. Breezes further slacken Wednesday night as the high moves into the western North Atlantic and weakens modestly. Min RH values are expected to be in the lower 60s percent today and in the lower 60s percent for Wednesday with good RH recovery overnight to near 100 percent. FLZ076>078-210315- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the cities of Key Largo, Marathon, and Key West 429 AM EST Tue Jan 20 2026 Today Tonight Wed Cloud Cover Pcldy Pcldy Pcldy Chance Precip (%) 0 0 10 Chance of Thunder (%) 0 0 0 Weather Type None None Showers Max/Min Temp 72 63 76 Min/Max RH % 62 99 71 Wind 20ft AM (mph) NE 14 G23 NE 12 G20 Wind 20ft PM (mph) NE 14 NE 14 NE 12 Precip Duration 1 Precip Begin 7 AM Precip End Continuing Precip Amount 0.00 0.00 0.00 Mixing Hgt(ft-agl) 2800 1600 2900 Transport Wnd (mph) NE 28 E 30 NE 24 Dispersion Index 48 41 49 Max LVORI 4 4 4 Remarks...None. $$ .FORECAST FOR DAYS 3 THROUGH 7... .WEDNESDAY NIGHT...Mostly cloudy with a chance of showers. Lows in the upper 60s. Northeast winds around 10 mph. .THURSDAY...Partly sunny with a chance of showers. Highs in the upper 70s. Northeast winds around 5 mph. .THURSDAY NIGHT...Partly cloudy with a slight chance of showers. Lows around 70. Northeast winds around 5 mph. .FRIDAY...Mostly sunny with a slight chance of showers. Highs in the upper 70s. East winds around 5 mph. .FRIDAY NIGHT...Mostly clear with a slight chance of showers. Lows in the lower 70s. East winds around 5 mph. .SATURDAY...Sunny with a slight chance of showers. Highs around 80. East winds around 5 mph. .SATURDAY NIGHT...Mostly clear with a slight chance of showers. Lows in the lower 70s. East winds around 5 mph. .SUNDAY...Sunny with a slight chance of showers. Highs around 80. Southeast winds around 5 mph. .SUNDAY NIGHT...Mostly clear with a slight chance of showers. Lows in the upper 60s. Northwest winds around 5 mph. .MONDAY...Mostly sunny with a slight chance of showers. Highs in the mid 70s. North winds around 10 mph. $$ MJV