Point Forecast Matrices
Issued by NWS Key West, FL
Issued by NWS Key West, FL
808 FOUS52 KKEY 182000 PFMKEY Point Forecast Matrices National Weather Service Key West FL 400 PM EDT Fri Sep 18 2026 FLZ078-190800- Key West-Monroe FL 24.55N 81.75W Elev. 3 ft 400 PM EDT Fri Sep 18 2026 Date 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 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 79 90 79 Temp 88 83 82 81 81 82 86 88 87 83 82 81 80 81 86 88 88 83 82 81 80 82 Dewpt 75 75 76 76 75 75 75 75 75 74 75 75 75 75 75 75 74 74 74 75 75 75 RH 66 77 82 85 82 79 70 66 68 74 79 82 85 82 70 66 63 74 77 82 85 79 Wind dir E NE E E E E E E E E E SE S S S S S S S S S S Wind spd 6 6 6 6 5 4 3 3 4 4 5 6 5 4 4 4 3 3 5 9 8 6 Clouds B1 SC SC B1 B1 B1 B1 SC SC B1 SC B1 SC SC SC SC SC SC B1 B1 SC SC PoP 12hr 60 60 60 60 60 QPF 12hr 0.17 0.15 0.10 0.17 0.20 Rain shwrs C L L L L L L L L L L L L L L L L L L L L L Tstms C C C C C C C C C C C C C C C C C C C C C C Heat index 98 90 89 87 87 89 95 98 96 90 89 87 85 87 95 98 97 90 88 87 85 89 Max heat 100 90 89 98 99 89 87 98 98 90 89 Date 09/21 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 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 90 81 90 79 90 80 90 81 90 Temp 88 84 81 82 88 85 82 82 88 84 81 82 87 84 82 82 88 85 Dewpt 75 74 76 76 76 75 76 76 77 76 77 77 77 76 76 76 76 75 PWind dir S S S SE SE SE S SE E Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC B1 B1 B1 B1 B1 B2 B1 B1 B1 B2 B2 B1 B1 B1 B1 SC PoP 12hr 60 70 70 70 70 80 60 60 70 Rain shwrs L L L L L L L L L L D D L L L L L L Tstms C C C C C C C C C C C C C C C C C C $$ FLZ077-190800- Marathon-Monroe FL 24.72N 81.04W Elev. 5 ft 400 PM EDT Fri Sep 18 2026 Date 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 80 88 80 88 80 Temp 87 84 83 83 82 82 85 86 86 84 83 82 81 82 85 86 86 84 83 82 81 82 Dewpt 75 75 75 75 75 75 75 75 74 74 74 75 74 75 75 75 74 74 74 75 74 75 RH 68 74 77 77 79 79 72 70 68 72 74 79 79 79 72 70 68 72 74 79 79 79 Wind dir E NE E E E E E E E E SE SE S S S S S S S S S SW Wind spd 5 6 8 6 5 4 4 4 4 4 6 8 5 4 4 4 4 4 6 8 8 6 Clouds SC SC SC SC B1 B1 B1 SC SC B1 SC SC SC B1 SC SC SC SC B1 B1 B1 SC PoP 12hr 60 60 60 60 60 QPF 12hr 0.12 0.12 0.07 0.12 0.24 Rain shwrs L L L L L L L L L L L L L L L L L L L L L L Tstms C C C C C C C C C C C C C C C C C C C C C C Heat index 96 92 90 90 89 89 94 95 94 91 90 89 86 89 94 95 94 91 90 89 86 89 Max heat 98 92 90 95 95 90 89 95 95 91 89 Date 09/21 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 88 82 89 81 88 81 88 80 88 Temp 86 85 83 83 86 85 83 83 86 85 83 83 86 85 83 82 86 85 Dewpt 75 75 75 76 76 75 76 76 77 76 76 76 76 76 76 76 76 75 PWind dir S S S SE S SE S SE E Wind char LT GN GN LT LT LT LT LT LT Avg clouds SC B1 B1 B1 B1 B1 B1 B2 B1 B2 B2 B2 B1 B2 B1 B1 SC SC PoP 12hr 60 70 70 80 80 70 70 60 70 Rain shwrs L L L L L L D D D D L L L L L L L L Tstms C C C C C C C C C C C C C C C C C C $$