FOUS52 KKEY 200800 PFMKEY Point Forecast Matrices National Weather Service Key West FL 400 AM EDT Wed May 20 2026 FLZ078-202000- Key West-Monroe FL 24.55N 81.75W Elev. 3 ft 400 AM EDT Wed May 20 2026 Date Wed 05/20/26 Thu 05/21/26 Fri 05/22/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 90 81 91 81 91 Temp 81 82 86 88 88 84 83 82 81 83 87 89 89 84 83 83 81 83 87 89 89 85 Dewpt 74 74 75 75 75 74 74 74 74 74 75 75 75 74 75 75 75 75 76 75 75 75 RH 79 77 70 66 66 72 74 77 79 74 68 64 64 72 77 77 82 77 70 64 64 72 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 11 11 11 12 12 13 13 13 12 11 10 10 11 12 13 12 11 11 10 10 11 12 Clouds SC SC SC SC FW FW FW FW FW FW FW FW FW FW FW SC SC FW FW FW FW FW PoP 12hr 30 20 20 20 10 QPF 12hr 0.03 0.02 0 0 0 Rain shwrs C C C C C S S S S S S S S S S S S S S S S S Tstms S S S S S S S S S S S S S S S S S S S S S S Heat index 86 88 95 98 98 91 90 88 86 90 96 99 99 91 90 90 87 90 98 99 99 94 Max heat 88 98 99 90 90 99 101 92 90 99 99 Date Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 82 92 82 91 81 92 82 92 Temp 83 84 90 86 83 84 89 86 83 84 90 86 83 84 89 86 Dewpt 75 75 76 75 75 75 76 74 75 75 75 74 75 75 76 75 PWind dir E E E E E E E E Wind char GN GN GN BZ BZ BZ BZ BZ Avg clouds FW FW FW FW FW SC SC FW SC SC SC FW SC SC SC SC PoP 12hr 10 10 10 5 20 5 20 10 Rain shwrs S S S S S S S S S S S S Tstms S S S S S S S S $$ FLZ077-202000- Marathon-Monroe FL 24.72N 81.04W Elev. 5 ft 400 AM EDT Wed May 20 2026 Date Wed 05/20/26 Thu 05/21/26 Fri 05/22/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 86 80 87 80 87 Temp 81 81 84 85 85 83 82 82 82 82 85 85 85 83 83 82 81 82 85 85 85 83 Dewpt 74 75 74 74 74 74 74 74 74 75 75 75 75 75 75 75 75 75 75 75 75 75 RH 79 82 72 70 70 74 77 77 77 79 72 72 72 77 77 79 82 79 72 72 72 77 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 11 12 12 12 13 13 12 12 11 11 11 11 12 13 13 12 11 11 11 11 12 12 Clouds SC SC SC FW FW SC FW FW FW FW FW FW FW FW FW SC SC FW FW FW FW FW PoP 12hr 30 20 20 20 20 QPF 12hr 0.01 0 0 0 0 Rain shwrs C C C C C S S S S S S S S S S S S S S S S S Tstms S S S S S S S S S S S S S S S S S S S S S S Heat index 86 87 91 93 93 90 88 88 88 89 94 94 94 90 90 89 87 89 94 94 94 90 Max heat 87 94 94 89 89 94 95 90 89 94 95 Date Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 81 88 81 87 81 88 81 88 Temp 83 83 86 85 83 83 86 85 83 83 86 85 83 83 86 85 Dewpt 75 76 75 75 75 75 75 74 74 75 75 74 75 75 75 75 PWind dir E E E E E E E E Wind char GN GN GN GN GN GN GN GN Avg clouds FW FW FW FW FW SC SC SC FW SC FW FW SC SC SC SC PoP 12hr 20 20 20 10 20 10 30 20 Rain shwrs S S S S S S S S S S S S C C S S Tstms S S S S S S S S S S S S $$