FPUS52 KKEY 281952 ZFPKEY Zone Forecasts for the Florida Keys National Weather Service Key West FL 352 PM EDT Sat Mar 28 2026 FLZ076>078-291100- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the communities of Key Largo, Marathon, and Key West 352 PM EDT Sat Mar 28 2026 .TONIGHT...Partly cloudy with a chance of showers and a slight chance of thunderstorms. Lows in the lower 70s. Northeast to east winds near 10 mph, increasing to near 15 mph. Chance of rain 30 percent. .SUNDAY...Partly cloudy in the morning, then becoming mostly sunny. A slight chance of showers and thunderstorms. Becoming breezy. Highs in the lower 80s. Northeast to east winds near 15 mph, increasing to 15 to 20 mph. Chance of rain 20 percent. .SUNDAY NIGHT...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 chance of showers and a slight chance of thunderstorms. Breezy. Highs in the lower 80s. East winds 15 to 20 mph. Chance of rain 40 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 40 percent. .TUESDAY...Partly sunny with a chance of showers and a slight chance of thunderstorms. Breezy. Highs in the lower 80s. Chance of rain 30 percent. .TUESDAY NIGHT AND WEDNESDAY...Mostly cloudy. Breezy at times. Lows in the lower 70s. Highs near 80. .WEDNESDAY NIGHT AND THURSDAY...Mostly cloudy with a slight chance of showers. Breezy at times. Lows in the mid 70s. Highs in the lower 80s. Chance of rain 10 percent. .THURSDAY NIGHT AND FRIDAY...Partly cloudy with a slight chance of showers. Breezy at times. Lows in the mid 70s. Highs in the lower 80s. Chance of rain 10 percent. $$