Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
Versions:
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138 FOCA52 TJSJ 191832 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 232 PM AST Sat Sep 19 2026 PRZ001-200800- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 232 PM AST Sat Sep 19 2026 Date 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue AST 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 92 79 92 79 Temp 87 83 81 80 79 87 91 92 86 83 81 80 79 87 91 92 86 83 81 80 79 87 Dewpt 76 75 76 75 74 75 75 75 75 75 76 75 74 75 75 75 76 75 76 75 74 75 RH 70 77 85 85 85 68 60 58 70 77 85 85 85 68 60 58 72 77 85 85 85 68 Wind dir E E SE SE SE SE E E E E SE SE SE SE E E E SE SE SE SE SE Wind spd 12 8 6 5 4 5 11 12 11 8 5 5 4 5 13 14 12 9 5 4 5 8 Clouds SC SC SC SC B2 B2 B2 B1 B1 B1 SC B2 B1 SC SC B2 B2 B2 B2 SC SC SC PoP 12hr 50 60 50 50 50 QPF 12hr 0.22 0.39 0.19 0.34 0.14 Rain shwrs S S C S C C L C C C C C C S S C C C C S S S Tstms S S Heat index 97 90 88 84 83 96102103 96 90 88 84 83 96102103 97 90 88 84 83 96 Max heat 104 90 96 103 102 89 96 103 102 89 96 Date 09/22 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 AST 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 92 79 91 79 92 79 92 79 92 Temp 92 83 80 86 91 83 80 87 92 83 80 87 92 83 80 87 92 83 Dewpt 75 75 75 75 76 75 75 75 76 75 75 76 75 75 75 76 73 73 PWind dir E E E SE E SE E SE E Wind char GN GN GN LT GN LT GN LT GN Avg clouds SC SC FW SC SC SC SC SC B1 B1 SC SC B1 B1 SC SC SC SC PoP 12hr 30 10 30 30 40 30 40 20 30 Rain shwrs C C S S S C C C C C C C C C S S C C $$ PRZ002-200800- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 232 PM AST Sat Sep 19 2026 Date 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 81 90 81 90 81 Temp 86 84 82 81 81 86 89 90 86 84 82 81 81 86 89 90 86 84 82 81 81 86 Dewpt 75 75 75 75 75 75 75 75 75 74 75 75 75 75 76 75 76 75 75 75 75 75 RH 70 74 79 82 82 70 64 62 70 72 79 82 82 70 66 62 72 74 79 82 82 70 Wind dir E E E E E E SE SE SE E SE SE SE SE SE SE SE SE E E E E Wind spd 8 6 8 6 4 6 9 8 8 6 8 5 5 8 11 9 8 8 6 6 9 11 Clouds SC SC B1 B1 B2 B2 B2 B1 SC B1 B2 B2 B1 B1 B1 B1 B1 B2 B2 SC SC SC PoP 12hr 60 60 50 50 50 QPF 12hr 0.31 0.25 0.26 0.24 0.15 Rain shwrs S S C C L L L C C C C C C C C C C C C S S C Heat index 95 91 89 88 87 95 99100 95 91 89 88 87 95101100 96 91 89 88 87 95 Max heat 100 91 95 101 101 90 95 101 100 91 95 Date 09/22 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 90 81 90 81 90 81 90 81 90 Temp 90 84 81 86 90 84 81 86 90 84 81 86 90 84 81 86 90 84 Dewpt 75 75 75 75 76 75 75 76 76 75 75 76 76 76 75 76 74 74 PWind dir E E E E SE E SE E E Wind char GN GN GN GN GN GN GN GN GN Avg clouds SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC PoP 12hr 30 30 40 40 40 40 40 30 30 Rain shwrs C C C C C C C C C C C C C C C C C S $$ PRZ007-200800- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 232 PM AST Sat Sep 19 2026 Date 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue AST 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 77 90 77 90 77 Temp 84 81 79 78 77 85 89 90 84 81 79 78 77 85 89 90 84 81 79 78 77 85 Dewpt 73 76 75 74 73 75 77 77 77 76 75 74 73 76 78 77 77 76 75 74 73 75 RH 70 85 88 88 87 72 68 66 80 85 88 88 87 75 70 66 80 85 88 88 87 72 Wind dir SE NE NE NE NE E SE SE SE E NE NE NE E SE SE SE E E E NE E Wind spd 6 5 4 4 3 5 10 10 8 5 5 4 5 6 12 10 8 5 4 4 4 6 Clouds B1 SC FW SC SC SC B1 B1 SC SC SC CL SC SC SC SC SC FW FW SC SC SC PoP 12hr 30 40 30 20 20 QPF 12hr 0.09 0.19 0.04 0.22 0.03 Rain shwrs C C C S S C C C C S S S S S S S S S Heat index 91 87 83 93101103 95 87 83 94103103 95 87 83 93 Max heat 98 86 93 104 102 86 94 104 102 86 93 Date 09/22 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 AST 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 76 91 76 90 77 91 77 91 Temp 90 80 77 85 91 81 77 84 90 81 78 85 91 81 78 85 91 81 Dewpt 77 76 73 75 77 76 74 76 77 76 74 76 77 76 74 71 73 75 PWind dir E E E E E E E E E Wind char GN LT GN LT GN LT GN LT GN Avg clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 10 20 20 10 20 20 20 5 40 Rain shwrs S S S S S S S S S S S S S S S S C C $$ PRZ008-200800- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 232 PM AST Sat Sep 19 2026 Date 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 76 88 77 88 76 Temp 83 80 78 77 76 83 87 88 83 80 79 78 77 83 87 88 83 80 78 77 76 83 Dewpt 77 77 76 75 74 76 76 76 77 77 76 75 73 76 76 77 77 77 76 75 74 76 RH 82 91 94 94 94 80 70 68 82 91 91 91 87 80 70 70 82 91 94 94 94 80 Wind dir E E E E E E NE NE NE E SE SE E E E NE NE E SE SE E E Wind spd 6 9 9 5 5 8 6 8 8 9 4 8 5 5 6 8 8 5 3 3 4 6 Clouds B1 B1 SC FW SC FW FW SC B2 B2 B2 SC FW FW FW OV OV B1 B1 FW FW CL PoP 12hr 40 60 50 70 40 QPF 12hr 0.08 0.95 0.14 0.72 0.08 Rain shwrs C C S S S L C C S L L C C Tstms S S S S S Heat index 92 85 91 97 99 93 87 92 98100 92 85 91 Max heat 100 91 100 99 85 92 100 99 91 Date 09/22 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 88 77 88 76 88 76 88 76 88 Temp 88 80 78 83 88 80 77 83 88 80 77 83 88 80 77 83 88 80 Dewpt 77 77 75 76 77 77 75 76 77 77 75 77 77 77 75 76 75 74 PWind dir E E E E E E NE E NE Wind char LT GN GN LT GN LT LT LT LT Avg clouds FW SC CL CL FW SC SC FW SC B2 SC SC SC B2 SC SC SC B1 PoP 12hr 30 0 20 5 60 30 70 10 40 Rain shwrs C C S S S S L L C C L L S S C C Tstms S S S S $$ PRZ010-200800- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 232 PM AST Sat Sep 19 2026 Date 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue AST 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 75 92 75 92 75 Temp 85 80 78 76 76 85 90 92 85 80 78 76 76 85 90 92 85 80 78 76 76 85 Dewpt 78 77 76 75 74 76 78 77 78 77 76 75 74 76 78 78 78 77 76 75 74 76 RH 80 91 94 97 94 75 68 62 80 91 94 97 94 75 68 64 80 91 94 97 94 75 Wind dir NE E E E E E W W NE E E E E E SE S NE E E E E E Wind spd 2 4 4 4 4 3 2 4 6 2 4 8 5 5 1 3 6 5 3 5 4 4 Clouds OV OV B1 FW FW FW FW SC OV B2 B2 SC FW FW FW OV OV B2 B2 FW FW CL PoP 12hr 70 80 60 90 60 QPF 12hr 0.19 1.02 0.12 1.22 0.12 Rain shwrs L L C S D C L S D D L L Tstms S S S S S S S S S Heat index 96 87 94105105 96 87 94105107 96 87 94 Max heat 106 83 94 108 106 83 94 107 106 83 94 Date 09/22 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 AST 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 92 75 92 75 92 75 92 75 92 Temp 92 80 76 85 92 80 76 85 92 80 76 85 92 80 76 85 92 80 Dewpt 78 77 75 76 78 77 75 76 78 77 75 76 78 77 75 76 74 74 PWind dir E E NW E SE E E E S Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC B1 SC FW SC B1 SC SC SC B2 SC SC SC B1 SC FW SC B1 PoP 12hr 50 10 50 20 70 20 60 5 60 Rain shwrs C C S S C C S S L L S S L L S S L L Tstms S S S S S S S S $$ VIZ001-200800- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 232 PM AST Sat Sep 19 2026 Date 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 82 91 82 91 82 Temp 87 85 83 82 82 87 90 91 87 85 83 82 82 87 90 91 87 85 83 82 82 86 Dewpt 73 75 76 76 76 75 75 74 75 75 76 76 76 75 75 75 75 75 76 76 76 75 RH 63 72 80 82 82 68 62 58 68 72 80 82 82 68 62 60 68 72 80 82 82 70 Wind dir E E E E E E SE SE SE E SE SE SE E SE SE E E E E E E Wind spd 9 11 11 11 10 11 10 9 9 10 9 9 10 11 12 12 11 12 14 16 14 13 Clouds SC SC SC SC B1 B1 B1 B1 SC B1 B1 SC SC SC SC B1 B1 SC SC SC SC SC PoP 12hr 40 40 40 40 20 QPF 12hr 0.11 0.16 0.09 0.13 0.05 Rain shwrs S S C C C C C C C C C S S S S C C S S S S S Heat index 95 93 92 90 90 97101100 97 93 92 90 90 97101102 97 93 92 90 90 95 Max heat 98 93 97 102 101 93 97 102 101 93 95 Date 09/22 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 89 82 89 82 91 82 89 82 89 Temp 89 84 82 86 89 84 82 87 91 85 82 86 89 84 82 86 89 84 Dewpt 75 75 76 76 75 76 77 76 75 76 77 76 75 76 77 74 74 75 PWind dir E E E E E E E E E Wind char GN BZ BZ GN GN GN GN GN GN Avg clouds SC SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 SC SC SC SC SC PoP 12hr 30 30 30 40 40 40 40 30 30 Rain shwrs S C C C S C C C C C C C C S S C C S $$ VIZ002-200800- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 232 PM AST Sat Sep 19 2026 Date 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue AST 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 81 89 81 91 81 Temp 88 84 83 82 81 86 88 89 86 83 82 81 81 87 90 91 87 84 83 82 81 85 Dewpt 75 75 75 75 75 75 76 76 75 75 75 75 75 76 76 76 76 75 75 75 75 76 RH 66 74 77 79 82 70 68 66 70 77 79 82 82 70 64 62 70 74 77 79 82 75 Wind dir E E E E E E SE SE SE E E E E E SE SE E E E E E E Wind spd 9 10 9 9 8 9 10 10 9 9 8 9 9 10 12 11 11 11 11 11 12 12 Clouds SC SC SC B1 B2 B1 B1 B1 B2 SC SC SC SC SC SC SC SC SC SC B1 B1 SC PoP 12hr 50 50 30 30 40 QPF 12hr 0.20 0.20 0.04 0.09 0.09 Rain shwrs S C C C C C C C C C S S S S S C C S S C C S Heat index 97 92 90 88 87 94 99100 94 91 89 88 87 97102103 97 92 90 88 87 95 Max heat 103 91 94 100 99 90 97 103 102 91 95 Date 09/22 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat 09/26/26 AST 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 80 88 81 89 81 89 81 89 Temp 88 82 80 85 88 83 81 86 89 83 81 86 89 83 81 86 89 83 Dewpt 76 75 76 76 76 76 76 76 77 76 76 77 77 76 77 77 74 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 SC SC SC SC SC SC SC B1 B1 B1 B1 B1 SC SC SC SC SC SC PoP 12hr 30 30 30 40 40 40 30 30 30 Rain shwrs S C C C S C C C C C C C C S S C C C $$