FPUS52 KKEY 290800 ZFPKEY Zone Forecasts for the Florida Keys National Weather Service Key West FL 400 AM EDT Sun Mar 29 2026 FLZ076>078-292145- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the communities of Key Largo, Marathon, and Key West 400 AM EDT Sun Mar 29 2026 .TODAY...Partly cloudy in the morning, then becoming mostly sunny. A slight chance of showers. Becoming breezy. Highs in the lower 80s. Northeast to east winds 10 to 15 mph, increasing to 15 to 20 mph in the afternoon. Chance of rain 10 percent. .TONIGHT...Partly cloudy with a chance of showers. Breezy. Lows in the lower 70s. Northeast to east winds 15 to 20 mph, becoming east. Chance of rain 30 percent. .MONDAY...Partly cloudy with a slight chance of showers and thunderstorms. Breezy. Highs in the lower 80s. East winds 15 to 20 mph. Chance of rain 30 percent. .MONDAY NIGHT...Partly cloudy with a chance of showers and a slight chance of thunderstorms. Breezy. Lows in the lower 70s. East winds 15 to 20 mph. Chance of rain 30 percent. .TUESDAY...Partly cloudy with a chance of showers. Breezy, becoming windy. Highs in the lower 80s. East winds 15 to 20 mph, increasing to near 20 mph. Chance of rain 30 percent. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of showers. Windy. Lows in the lower 70s. Chance of rain 10 percent. .WEDNESDAY...Mostly cloudy with a slight chance of showers. Breezy. Highs in the lower 80s. Chance of rain 10 percent. .WEDNESDAY NIGHT AND THURSDAY...Mostly cloudy with a slight chance of showers and thunderstorms. Breezy at times. Lows in the lower 70s. Highs in the lower 80s. Chance of rain 20 percent. .THURSDAY NIGHT...Partly to mostly cloudy with a chance of showers. Windy with lows in the lower 70s. Chance of rain 30 percent. .FRIDAY...Partly cloudy with a slight chance of showers and thunderstorms. Windy with highs in the lower 80s. Chance of rain 20 percent. .FRIDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Breezy with lows in the lower 70s. Chance of rain 20 percent. .SATURDAY...Partly sunny with a slight chance of showers. Breezy with highs near 80. Chance of rain 20 percent. $$ MJV