FPUS52 KKEY 270800 ZFPKEY Zone Forecasts for the Florida Keys National Weather Service Key West FL 400 AM EDT Fri Mar 27 2026 FLZ076>078-272145- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the communities of Key Largo, Marathon, and Key West 400 AM EDT Fri Mar 27 2026 .TODAY...Partly cloudy in the morning, then becoming mostly sunny. A slight chance of showers. Highs in the lower 80s. Northeast to east winds 10 to 15 mph. Chance of rain 10 percent. .TONIGHT...Mostly clear with a slight chance of showers. Lows in the lower 70s. Northeast to east winds 10 to 15 mph, becoming northeast and decreasing to 5 to 10 mph. Chance of rain 10 percent. .SATURDAY...Mostly sunny with a slight chance of showers. Highs in the lower 80s. Northeast winds 5 to 10 mph, becoming northeast to east and increasing to near 10 mph. Chance of rain 10 percent. .SATURDAY NIGHT...Mostly clear with a slight chance of showers. Becoming breezy. Lows in the lower 70s. Northeast winds 10 to 15 mph, increasing to 15 to 20 mph. Chance of rain 20 percent. .SUNDAY...Mostly sunny with a slight chance of showers. Windy. Highs near 80. Northeast to east winds near 20 mph. Chance of rain 20 percent. .SUNDAY NIGHT AND MONDAY...Partly cloudy with a slight chance of showers. Windy at times. Lows in the lower 70s. Highs near 80. Chance of rain 20 percent. .MONDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of showers. Windy with lows in the lower 70s. Chance of rain 20 percent. .TUESDAY THROUGH THURSDAY...Mostly cloudy with a slight chance of showers. Windy at times. Highs in the lower 80s. Lows in the lower 70s. Chance of rain 10 percent. $$ MJV