FPUS52 KKEY 262055 ZFPKEY Zone Forecasts for the Florida Keys National Weather Service Key West FL 355 PM EST Thu Feb 26 2026 FLZ076>078-271245- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the communities of Key Largo, Marathon, and Key West 355 PM EST Thu Feb 26 2026 .TONIGHT...Partly cloudy. A slight chance of showers late. Lows in the upper 60s. East to southeast winds near 10 mph, decreasing to 5 to 10 mph. Chance of rain 10 percent. .FRIDAY...Partly sunny. Highs in the lower 80s. East to southeast winds 5 to 10 mph. .FRIDAY NIGHT...Partly cloudy with a slight chance of showers. Lows in the upper 60s. East to southeast winds 5 to 10 mph. Chance of rain 20 percent. .SATURDAY...Partly cloudy with a slight chance of showers. Highs in the lower 80s. Southeast winds near 5 mph. Chance of rain 10 percent. .SATURDAY NIGHT...Partly cloudy with a slight chance of showers. Lows in the upper 60s. Northeast winds near 5 mph. Chance of rain 20 percent. .SUNDAY...Mostly sunny with a slight chance of showers. Highs near 80. Chance of rain 10 percent. .SUNDAY NIGHT AND MONDAY...Partly cloudy with a slight chance of showers. Lows near 70. Highs near 80. Chance of rain 10 percent. .MONDAY NIGHT THROUGH TUESDAY NIGHT...Partly cloudy with a slight chance of showers. Lows in the upper 60s. Highs near 80. Chance of rain 20 percent. .WEDNESDAY THROUGH THURSDAY...Partly cloudy with a slight chance of showers. Highs in the lower 80s. Lows near 70. Chance of rain 20 percent. $$