FOUS52 KKEY 192000 PFMKEY Point Forecast Matrices National Weather Service Key West FL 400 PM EDT Tue May 19 2026 FLZ078-200800- Key West-Monroe FL 24.55N 81.75W Elev. 3 ft 400 PM EDT Tue May 19 2026 Date 05/19/26 Wed 05/20/26 Thu 05/21/26 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 80 90 81 91 81 Temp 89 85 82 82 81 82 87 88 88 84 83 82 81 83 87 89 89 85 83 83 81 83 Dewpt 75 75 74 74 74 74 75 75 74 74 74 74 74 74 75 74 74 73 74 74 74 74 RH 64 72 77 77 79 77 68 66 63 72 74 77 79 74 68 61 61 67 74 74 79 74 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 14 13 14 14 12 11 11 11 12 12 12 12 10 10 9 8 9 10 11 11 10 9 Clouds SC SC FW SC SC FW FW FW FW FW FW FW FW FW FW FW CL FW FW SC SC FW PoP 12hr 30 30 30 20 10 QPF 12hr 0.22 0.02 0 0 0 Rain shwrs C C C C C C C C C C C C C S S S S Tstms S S S S S S S S S S S S S S S S S Heat index 99 94 88 88 86 88 96 98 97 91 90 88 86 90 96 98 98 92 90 90 86 90 Max heat 99 90 88 98 99 90 90 98 98 90 90 Date 05/22 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 91 82 92 82 92 81 92 82 92 Temp 89 86 83 84 89 87 83 84 90 87 83 84 90 87 83 84 90 87 Dewpt 75 74 75 75 75 75 75 75 76 75 75 75 75 74 75 75 76 75 PWind dir E E E E E E E E E Wind char LT GN GN GN GN GN BZ BZ BZ Avg clouds FW FW FW FW FW FW FW SC FW FW FW SC SC SC SC B1 B1 SC PoP 12hr 10 10 5 20 10 30 20 30 10 Rain shwrs S S S S C C S S C C S S Tstms S S S S S S S S $$ FLZ077-200800- Marathon-Monroe FL 24.72N 81.04W Elev. 5 ft 400 PM EDT Tue May 19 2026 Date 05/19/26 Wed 05/20/26 Thu 05/21/26 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 79 86 80 87 81 Temp 85 83 82 82 81 81 84 85 85 83 83 82 81 82 85 85 85 83 83 83 81 83 Dewpt 75 75 75 74 74 75 75 74 74 74 74 74 74 74 74 74 74 74 74 74 74 74 RH 72 77 79 77 79 82 74 70 70 74 74 77 79 77 70 70 70 74 74 74 79 74 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 14 13 14 13 12 10 10 11 12 12 12 11 10 9 9 10 10 10 11 10 10 9 Clouds SC SC SC SC SC FW FW FW FW FW FW FW FW FW FW FW FW FW FW SC SC FW PoP 12hr 40 30 30 20 10 QPF 12hr 0 0 0 0 0 Rain shwrs C C C C C C C C C C C C C S S S S S Tstms S S S S S S S S S S S S S S S S S S Heat index 94 90 89 88 86 87 92 93 93 90 90 88 86 88 93 93 93 90 90 90 86 90 Max heat 94 89 87 94 94 90 88 93 94 90 90 Date 05/22 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 87 81 87 81 88 80 88 81 88 Temp 86 85 83 83 86 85 83 83 86 85 83 83 86 85 83 83 86 85 Dewpt 74 74 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 PWind dir E E E E E E E E E Wind char GN GN GN GN GN GN GN GN GN Avg clouds FW FW FW SC FW FW FW SC SC FW FW SC SC SC SC B1 SC SC PoP 12hr 10 10 10 30 20 40 20 30 20 Rain shwrs S S S S C C S S C C S S C C S S Tstms S S S S S S C C S S S S S S $$