FPUS62 KKEY 192000 SFTKEY STZ000-200900- Tabular State Forecast for the Florida Keys National Weather Service Key West FL 400 PM EDT Tue May 19 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 Wed Thu Fri Sat Sun Mon Tue May 20 May 21 May 22 May 23 May 24 May 25 May 26 ...Upper Keys... Key Largo Sunny Sunny Sunny Sunny Sunny Sunny Ptcldy 80/86 81/86 81/86 82/87 82/87 82/87 82/87 40/30 30/30 20/10 20/20 30/30 30/30 30/30 ...Middle Keys... Marathon Sunny Sunny Sunny Sunny Sunny Sunny Ptcldy 79/86 80/87 81/87 81/87 81/88 80/88 81/88 40/40 30/30 20/10 10/10 30/30 40/40 30/30 ...Lower Keys... Key West Sunny Sunny Sunny Sunny Sunny Ptcldy Ptcldy 80/90 81/91 81/91 82/92 82/92 81/92 82/92 40/30 30/30 20/10 10/10 20/20 30/30 30/30 $$