FPUS52 KKEY 210118 AAA ZFPKEY Zone Forecasts for the Florida Keys...UPDATED National Weather Service Key West FL 918 PM EDT Mon Apr 20 2026 FLZ076>078-210815- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the communities of Key Largo, Marathon, and Key West 918 PM EDT Mon Apr 20 2026 Updated to raise PoPs for the second period. .REST OF TONIGHT...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Becoming breezy. Lows in the lower 70s. Northeast winds 10 to 15 mph, increasing to 15 to 20 mph. Chance of rain 40 percent. .TUESDAY...Partly cloudy with a chance of showers. Windy. Highs near 80. Northeast winds near 20 mph, increasing to 20 to 25 mph. Chance of rain 30 percent. .TUESDAY NIGHT...Partly cloudy and windy. Lows in the lower 70s. East winds 20 to 25 mph, decreasing to near 20 mph. .WEDNESDAY...Partly sunny. Windy, becoming breezy. Highs in the upper 70s. East winds near 20 mph, decreasing to 15 to 20 mph. .WEDNESDAY NIGHT...Mostly cloudy with a slight chance of showers. Lows in the lower 70s. East winds near 15 mph. Chance of rain 10 percent. .THURSDAY...Mostly cloudy with a slight chance of showers. Highs near 80. Chance of rain 10 percent. .THURSDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Breezy. lows in the lower 70s. Chance of rain 30 percent. .FRIDAY AND FRIDAY NIGHT...Mostly cloudy with a slight chance of showers. Highs in the lower 80s. Lows in the mid 70s. Chance of rain 10 percent. .SATURDAY THROUGH MONDAY...Mostly clear. Highs in the lower 80s. Lows in the mid 70s. $$ BT/AP