FPUS52 KKEY 271959 ZFPKEY Zone Forecasts for the Florida Keys National Weather Service Key West FL 359 PM EDT Fri Mar 27 2026 FLZ076>078-280915- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the communities of Key Largo, Marathon, and Key West 359 PM EDT Fri Mar 27 2026 .TONIGHT...Mostly clear with a slight chance of showers. Lows in the lower 70s. Northeast winds 10 to 15 mph, 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 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...Partly sunny with a slight chance of showers. Windy. Highs in the lower 80s. East winds near 20 mph. Chance of rain 20 percent. .SUNDAY NIGHT...Partly cloudy with a slight chance of showers. Windy. Lows in the lower 70s. East winds near 20 mph. Chance of rain 20 percent. .MONDAY...Partly sunny with a slight chance of showers. Windy with highs in the lower 80s. Chance of rain 20 percent. .MONDAY NIGHT...Mostly cloudy with a slight chance of showers and thunderstorms. Windy with lows in the lower 70s. Chance of rain 20 percent. .TUESDAY...Partly sunny in the morning, then becoming mostly sunny. A slight chance of showers. Windy with highs in the upper 70s. Chance of rain 10 percent. .TUESDAY NIGHT...Mostly cloudy with a slight chance of showers. Windy with lows in the lower 70s. Chance of rain 10 percent. .WEDNESDAY THROUGH FRIDAY...Mostly cloudy with a slight chance of showers. Breezy at times. Highs in the upper 70s. Lows in the lower 70s. Chance of rain 20 percent. $$