FPUS62 KKEY 202014 SFTKEY STZ000-210900- Tabular State Forecast for the Florida Keys National Weather Service Key West FL 414 PM EDT Sun Sep 20 2026 ROWS INCLUDE... Daily predominant daytime weather 6AM-6PM Forecast temperatures...early morning low/daytime high Probability of precipitation nighttime 6PM-6AM/daytime 6AM-6PM - indicates temperatures below zero MM indicates missing data FCST FCST FCST FCST FCST FCST FCST Mon Tue Wed Thu Fri Sat Sun Sep 21 Sep 22 Sep 23 Sep 24 Sep 25 Sep 26 Sep 27 ...Upper Keys... Key Largo Tstrms Tstrms Tstrms Tstrms Tstrms Tstrms Tstrms 80/86 80/87 81/86 80/86 80/87 80/86 79/86 60/60 60/70 70/70 70/70 70/70 70/70 70/70 ...Middle Keys... Marathon Tstrms Tstrms Tstrms Tstrms Tstrms Tstrms Tstrms 80/88 80/89 80/88 80/88 80/89 81/88 80/88 70/60 70/70 70/70 70/70 60/50 50/60 60/70 ...Lower Keys... Key West Tstrms Tstrms Tstrms Tstrms Ptcldy Tstrms Tstrms 78/90 79/90 80/90 80/90 80/90 79/90 80/89 70/50 70/70 70/70 70/70 50/40 50/60 60/70 $$