FOUS52 KKEY 190800 PFMKEY Point Forecast Matrices National Weather Service Key West FL 400 AM EDT Tue May 19 2026 FLZ078-192000- Key West-Monroe FL 24.55N 81.75W Elev. 3 ft 400 AM EDT Tue May 19 2026 Date Tue 05/19/26 Wed 05/20/26 Thu 05/21/26 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 80 90 81 91 Temp 81 82 86 88 89 85 82 82 81 82 87 88 88 84 83 82 81 83 87 89 89 85 Dewpt 75 75 75 75 75 75 74 74 74 74 75 75 74 74 74 74 74 74 75 74 74 73 RH 82 79 70 66 64 72 77 77 79 77 68 66 63 72 74 77 79 74 68 61 61 67 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 13 13 13 13 14 13 14 14 12 11 11 11 12 12 12 12 10 10 9 8 9 10 Clouds SC SC SC SC SC SC FW SC SC FW FW FW FW FW FW FW FW FW FW FW CL FW PoP 12hr 40 30 30 30 20 QPF 12hr 0.14 0.22 0.02 0 0 Rain shwrs C C C C 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 S S S S Heat index 87 89 95 98 99 94 88 88 86 88 96 98 97 91 90 88 86 90 96 98 98 92 Max heat 89 98 99 90 88 98 99 90 90 98 98 Date Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 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 91 81 92 81 92 81 92 Temp 83 83 89 86 83 84 89 87 83 84 90 87 83 84 90 87 Dewpt 74 74 75 74 75 75 75 74 75 75 76 75 75 75 75 74 PWind dir E E E SE E E E E Wind char GN LT GN GN GN GN GN BZ Avg clouds FW SC FW FW FW SC FW FW FW SC SC FW SC SC SC SC PoP 12hr 10 10 5 5 20 10 30 10 Rain shwrs S S S S C C S S Tstms S S S S $$ FLZ077-192000- Marathon-Monroe FL 24.72N 81.04W Elev. 5 ft 400 AM EDT Tue May 19 2026 Date Tue 05/19/26 Wed 05/20/26 Thu 05/21/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 86 79 86 80 87 Temp 81 81 84 84 85 83 82 82 81 81 84 85 85 83 83 82 81 82 85 85 85 83 Dewpt 75 75 75 75 75 75 75 74 74 75 75 74 74 74 74 74 74 74 74 74 74 74 RH 82 82 74 74 72 77 79 77 79 82 74 70 70 74 74 77 79 77 70 70 70 74 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 13 12 13 13 14 13 14 13 12 10 10 11 12 12 12 11 10 9 9 10 10 10 Clouds SC SC SC SC SC SC SC SC SC FW FW FW FW FW FW FW FW FW FW FW FW FW PoP 12hr 40 40 30 30 20 QPF 12hr 0.14 0 0 0 0 Rain shwrs C C C C C C C C C C C C C C C C C S S S S Tstms S S S S S S S S S S S S S S S S S S S S S Heat index 87 87 92 92 94 90 89 88 86 87 92 93 93 90 90 88 86 88 93 93 93 90 Max heat 87 92 94 89 87 94 94 90 88 93 94 Date Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 81 87 81 88 81 88 81 88 Temp 83 83 86 85 83 83 86 85 83 83 86 85 83 83 86 86 Dewpt 74 74 74 74 75 75 75 75 75 75 75 75 75 75 75 74 PWind dir E E E E E E E E Wind char GN GN GN GN GN GN GN GN Avg clouds FW SC FW FW FW SC FW FW FW SC SC FW SC SC SC SC PoP 12hr 10 10 10 10 30 10 40 20 Rain shwrs S S S S C C S S C C S S Tstms S S S S C C S S $$