FPUS52 KKEY 151421 AAA ZFPKEY Zone Forecasts for the Florida Keys...UPDATED National Weather Service Key West FL 1021 AM EDT Thu Oct 15 2026 FLZ076>078-152115- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the communities of Key Largo, Marathon, and Key West 1021 AM EDT Thu Oct 15 2026 Updated to lower first period PoPs .THIS AFTERNOON...Mostly sunny to partly cloudy. A slight chance of showers and thunderstorms. Highs in the upper 80s. East winds 10 to 15 mph. Chance of rain 20 percent. .TONIGHT...Partly cloudy with a chance of showers and a slight chance of thunderstorms. Lows in the lower 80s. East winds near 15 mph, becoming east to southeast. Chance of rain 40 percent. .FRIDAY...Partly cloudy with a chance of showers and a slight chance of thunderstorms. Highs in the upper 80s. East to southeast winds near 10 mph, decreasing to 5 to 10 mph. Chance of rain 40 percent. .FRIDAY NIGHT...Partly to mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows in the upper 70s. Northeast to east winds 5 to 10 mph, decreasing to near 5 mph. Chance of rain 50 percent. .SATURDAY...Showers likely with a chance of thunderstorms. Highs in the upper 80s. Light and variable winds in the morning, becoming north to northeast and increasing to near 10 mph during the afternoon. Chance of rain 60 percent. .SATURDAY NIGHT...Showers with a chance of thunderstorms. Becoming windy late. Lows in the upper 70s. Chance of rain 80 percent. .SUNDAY...Showers with a chance of thunderstorms. Windy. Highs in the mid 80s. Chance of rain 80 percent. .SUNDAY NIGHT AND MONDAY...Showers likely with a chance of thunderstorms. Windy. Lows in the upper 70s. Highs in the mid 80s. Chance of rain 70 percent. .MONDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Windy. Lows in the upper 70s. Chance of rain 50 percent. .TUESDAY...Partly sunny in the morning, then becoming mostly sunny. A chance of showers and thunderstorms. Windy. Highs in the mid 80s. Chance of rain 40 percent. .TUESDAY NIGHT...Partly cloudy with a chance of showers and a slight chance of thunderstorms. Windy. Lows in the mid 70s. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny with a chance of showers and a slight chance of thunderstorms. Windy. Highs in the mid 80s. Chance of rain 40 percent. $$