FPUS52 KKEY 270800 ZFPKEY Zone Forecasts for the Florida Keys National Weather Service Key West FL 400 AM EDT Mon Apr 27 2026 FLZ076>078-272300- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the communities of Key Largo, Marathon, and Key West 400 AM EDT Mon Apr 27 2026 .TODAY...Mostly sunny with a slight chance of showers. Highs in the mid 80s. Light and variable winds. Chance of rain 10 percent. .TONIGHT...Mostly clear with a slight chance of showers. Lows in the mid 70s. North to northeast winds 5 to 10 mph, becoming northeast to east and increasing to near 10 mph. Chance of rain 10 percent. .TUESDAY...Mostly sunny with a slight chance of showers. Highs in the mid 80s. Northeast to east winds near 10 mph. Chance of rain 10 percent. .TUESDAY NIGHT...Mostly clear with a slight chance of showers. Lows in the mid 70s. East winds 10 to 15 mph. Chance of rain 10 percent. .WEDNESDAY...Mostly sunny with a slight chance of showers. Highs in the mid 80s. East winds near 10 mph, becoming east to southeast and decreasing to 5 to 10 mph. Chance of rain 10 percent. .WEDNESDAY NIGHT AND THURSDAY...Mostly clear. A slight chance of showers. Lows in the mid 70s. Highs in the mid 80s. Chance of rain 10 percent. .THURSDAY NIGHT THROUGH SATURDAY...Mostly clear. Lows in the mid 70s. Highs in the mid 80s. .SATURDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. .SUNDAY...Partly sunny with a slight chance of showers and thunderstorms. Highs in the mid 80s. Chance of rain 20 percent. $$ MJV