FPUS52 KKEY 190800 ZFPKEY Zone Forecasts for the Florida Keys National Weather Service Key West FL 400 AM EDT Fri Apr 19 2024 FLZ076>078-192115- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the communities of Key Largo, Marathon, and Key West 400 AM EDT Fri Apr 19 2024 .TODAY...Mostly sunny. Highs in the mid 80s. East to southeast winds 10 to 15 mph, decreasing to near 10 mph. .TONIGHT...Mostly clear. Lows in the mid 70s. East to southeast winds 5 to 10 mph. .SATURDAY...Mostly sunny. Highs in the mid 80s. East to southeast winds near 10 mph. .SATURDAY NIGHT...Mostly clear. Lows in the mid 70s. East to southeast winds near 10 mph, becoming southeast 10 to 15 mph after midnight. .SUNDAY...Mostly sunny. Highs in the mid 80s. Southeast winds 10 to 15 mph, decreasing to 5 to 10 mph in the afternoon. .SUNDAY NIGHT THROUGH MONDAY NIGHT...Mostly clear. Lows in the mid 70s. Highs in the mid 80s. .TUESDAY...Mostly sunny with a slight chance of showers. Highs in the mid 80s. Chance of rain 10 percent. .TUESDAY NIGHT THROUGH THURSDAY...Partly cloudy with a slight chance of showers. Lows in the mid 70s. Highs in the mid 80s. Chance of rain 10 percent. $$