Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
Versions:
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654 FOCA52 TJSJ 020903 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 503 AM AST Tue Sep 2 2025 PRZ001-022000- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 503 AM AST Tue Sep 2 2025 Date Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 AST 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 91 79 90 79 90 Temp 86 90 91 86 83 81 80 79 85 89 90 85 82 81 80 79 85 89 90 85 82 Dewpt 75 76 76 76 75 76 75 75 76 76 76 75 75 76 75 75 75 75 75 75 75 RH 70 64 62 72 77 85 85 88 75 66 64 72 79 85 85 88 72 64 62 72 79 Wind dir SE E E E SE SE SE SE E E E E E E E E E E E E E Wind spd 6 11 14 12 9 6 5 5 9 14 14 11 10 8 6 8 8 13 14 12 9 Clouds B2 B1 B2 B1 SC B2 B1 B1 SC SC B2 B2 SC SC SC SC SC SC SC SC FW PoP 12hr 60 60 50 30 30 QPF 12hr 0.49 0.21 0.62 0.08 0.09 Rain shwrs C C L C C L C C S S C C S S C C S S C C Tstms S S S Heat index 95102103 96 90 87 84 83 95100102 94 89 87 84 83 94 99100 94 89 Max heat 95 103 103 89 95 102 101 88 94 101 100 Heat Y Y Date Fri 09/05/25 Sat 09/06/25 Sun 09/07/25 Mon 09/08/25 AST 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 79 90 80 90 79 91 79 89 Temp 80 85 90 83 81 86 90 82 80 86 91 83 80 85 89 82 Dewpt 75 75 76 76 76 76 76 76 75 76 76 75 75 75 76 75 PWind dir E E E E E E E E Wind char LT GN GN GN GN GN LT GN Avg clouds FW SC SC B2 SC SC B1 B2 SC SC SC SC SC SC SC B2 PoP 12hr 20 60 40 70 40 50 20 70 Rain shwrs S S L L C C L L C C C C S S L L Tstms S S S S S S S S $$ PRZ002-022000- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 503 AM AST Tue Sep 2 2025 Date Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 91 79 88 78 90 Temp 86 90 91 86 83 81 80 79 84 87 88 84 81 80 79 78 85 89 90 85 82 Dewpt 77 77 77 77 77 77 77 76 77 77 77 77 77 77 76 76 77 77 77 77 76 RH 75 66 64 75 82 88 91 91 80 72 70 80 88 91 91 94 77 68 66 77 82 Wind dir SE SE SE SE SE SE E E SE SE E E E E E E E E E E E Wind spd 10 10 10 9 10 9 9 10 11 12 13 11 11 11 10 9 10 12 11 12 11 Clouds B1 B2 B2 B2 B2 B2 B1 B2 B2 B2 SC SC SC SC B1 B1 SC SC SC SC SC PoP 12hr 60 60 50 40 30 QPF 12hr 0.39 0.29 0.20 0.11 0.06 Rain shwrs C C C L L L C C C C C C C C C C S S C C S Tstms S S S Heat index 97103105 97 92 88 85 84 94 99100 94 88 85 95102102 96 90 Max heat 97 106 105 90 94 100 99 87 95 103 102 Heat Y Y Date Fri 09/05/25 Sat 09/06/25 Sun 09/07/25 Mon 09/08/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 79 90 80 90 79 90 78 89 Temp 80 85 90 83 81 86 90 82 80 85 90 82 79 84 89 81 Dewpt 76 77 77 77 77 78 78 77 77 77 77 76 76 77 77 76 PWind dir E E E E E E E E Wind char GN GN GN GN GN GN GN GN Avg clouds SC B1 SC B2 SC SC B1 B2 SC SC B1 B2 SC SC B1 B2 PoP 12hr 50 60 50 70 50 60 40 70 Rain shwrs C C L L C C L L C C L L C C L L Tstms S S S S S S S S S S $$ PRZ007-022000- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 503 AM AST Tue Sep 2 2025 Date Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 AST 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 91 77 88 77 88 Temp 86 90 91 85 81 79 78 77 83 87 88 83 80 79 78 77 83 87 88 83 80 Dewpt 75 78 78 79 74 74 73 73 73 72 73 73 73 73 72 71 70 72 73 70 73 RH 70 68 66 82 79 85 85 87 72 61 61 72 79 82 82 82 65 61 61 65 79 Wind dir E SE SE SE E E NE NE E SE SE E E NE E E E SE SE SE E Wind spd 5 10 10 8 6 6 4 5 8 12 12 10 9 5 5 4 6 13 13 11 8 Clouds SC SC B1 SC SC SC SC SC FW FW SC SC FW FW CL CL CL CL SC SC FW PoP 12hr 40 20 10 0 10 QPF 12hr 0.16 0.04 0.03 0 0.10 Rain shwrs S C C S S S S S S S S S Heat index 95105106 98 86 83 89 94 95 89 85 88 93 95 87 85 Max heat 95 106 106 85 89 95 95 84 88 96 94 Heat Y Y Date Fri 09/05/25 Sat 09/06/25 Sun 09/07/25 Mon 09/08/25 AST 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 77 88 78 89 77 90 77 88 Temp 78 83 88 81 79 84 89 81 78 85 90 81 78 83 88 80 Dewpt 71 71 73 74 73 73 73 73 72 72 73 69 71 71 72 73 PWind dir NE E E E E E E E Wind char LT GN LT GN LT GN LT GN Avg clouds FW FW FW FW FW FW SC SC FW FW FW FW CL FW SC SC PoP 12hr 10 10 20 30 10 20 10 30 Rain shwrs S S S S S C C S S S S S C C $$ PRZ008-022000- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 503 AM AST Tue Sep 2 2025 Date Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 89 77 88 77 88 Temp 84 88 89 84 81 79 78 77 83 87 88 83 80 79 78 77 83 87 88 83 80 Dewpt 74 75 77 74 75 75 75 73 75 76 76 75 75 76 75 73 75 76 76 75 75 RH 72 66 68 72 82 88 91 87 77 70 68 77 85 91 91 87 77 70 68 77 85 Wind dir E E E NE E SE E SE E NE E E E E E E E E E E E Wind spd 6 4 8 3 2 6 4 3 5 5 8 5 3 4 8 8 10 10 12 11 5 Clouds SC SC OV OV B2 SC SC SC CL FW OV OV SC SC CL CL CL CL B1 B1 CL PoP 12hr 80 50 70 5 40 QPF 12hr 1.12 0.09 1.86 0.01 0.87 Rain shwrs C L D C S L L S S C C Tstms S S S S S Heat index 91 98102 91 87 91 98 99 91 86 91 97 99 90 86 Max heat 91 102 100 85 91 99 98 84 91 99 98 Heat Y Y Date Fri 09/05/25 Sat 09/06/25 Sun 09/07/25 Mon 09/08/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 77 88 78 88 77 89 77 88 Temp 78 83 88 81 79 84 88 80 78 84 89 81 78 83 88 80 Dewpt 75 75 76 76 76 76 77 76 76 75 77 75 75 75 76 75 PWind dir E E E E E E E E Wind char GN GN GN GN GN GN GN GN Avg clouds FW FW SC B1 CL FW SC B1 FW FW SC SC CL FW SC B2 PoP 12hr 5 60 5 60 5 50 10 70 Rain shwrs L L S L L S S C C S L L Tstms S S S S S S S S $$ PRZ010-022000- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 503 AM AST Tue Sep 2 2025 Date Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 AST 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 92 74 92 74 93 Temp 85 91 92 84 79 77 75 75 84 90 92 84 79 77 75 75 85 91 93 85 80 Dewpt 76 77 78 77 77 76 75 75 76 77 78 77 77 76 75 74 76 77 78 77 77 RH 75 64 64 80 94 97100100 77 66 64 80 94 97100 97 75 64 62 77 91 Wind dir E S N NE E E E E E W N E E E E E E E E E E Wind spd 3 1 4 3 2 5 5 4 4 1 2 4 5 6 4 3 4 2 4 3 3 Clouds SC SC OV OV B2 SC SC SC CL FW OV OV FW FW CL CL CL CL OV OV CL PoP 12hr 80 60 70 5 80 QPF 12hr 1.20 0.14 1.86 0.01 1.53 Rain shwrs C L D L L L D D Tstms S S S S S S S Heat index 94105107 94 94104107 94 84 95105109 96 87 Max heat 94 107 105 94 107 106 95 109 107 Heat Y Y Date Fri 09/05/25 Sat 09/06/25 Sun 09/07/25 Mon 09/08/25 AST 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 75 93 76 93 75 94 75 93 Temp 76 85 93 81 77 86 93 80 76 86 94 81 76 85 93 80 Dewpt 74 75 78 77 75 77 79 77 75 76 79 77 75 76 78 76 PWind dir E E E E E E E E Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW SC B1 CL CL SC B1 CL CL SC B1 CL FW SC B1 PoP 12hr 5 70 5 80 0 70 10 60 Rain shwrs L L D D L L S L L Tstms S S C C S S S S $$ VIZ001-022000- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 503 AM AST Tue Sep 2 2025 Date Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 89 80 88 80 90 Temp 86 88 89 85 83 81 80 80 85 87 88 85 82 81 80 80 86 89 90 86 84 Dewpt 77 77 77 77 77 77 77 77 78 77 77 77 76 76 76 76 77 77 77 77 76 RH 75 70 68 77 82 88 91 91 80 72 70 77 82 85 88 88 75 68 66 75 77 Wind dir SE SE SE SE E E E E E E E E E E E E E E E E E Wind spd 14 13 13 12 13 13 13 14 16 17 16 16 16 16 16 14 14 16 16 14 14 Clouds B1 SC B2 B2 SC SC B1 B2 B1 B2 SC SC B1 B1 B1 B1 SC SC SC SC SC PoP 12hr 50 50 50 40 30 QPF 12hr 0.15 0.16 0.20 0.14 0.07 Rain shwrs C C C C C S C C C C C C C C C C S S S S C Tstms S S Heat index 97100102 96 92 89 87 87 96 99 99 95 90 88 86 86 97101103 97 92 Max heat 97 102 103 90 96 100 99 89 97 103 102 Heat Y Y Date Fri 09/05/25 Sat 09/06/25 Sun 09/07/25 Mon 09/08/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 81 91 81 91 80 91 80 90 Temp 81 87 91 84 82 87 91 83 81 86 91 83 81 86 90 82 Dewpt 76 78 77 78 78 78 77 77 77 77 77 77 76 77 76 76 PWind dir E E E E E E E E Wind char BZ BZ BZ BZ BZ GN BZ BZ Avg clouds B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 40 50 50 50 50 50 50 50 Rain shwrs C C C C C C C C C C C C C C C C Tstms S S S S S S $$ VIZ002-022000- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 503 AM AST Tue Sep 2 2025 Date Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 AST 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 91 79 89 78 91 Temp 86 90 91 86 83 81 80 79 85 88 89 84 81 80 79 78 86 90 91 86 83 Dewpt 77 77 77 77 76 76 77 76 77 77 76 76 76 76 76 75 76 75 76 76 76 RH 75 66 64 75 80 85 91 91 77 70 66 77 85 88 91 91 72 62 62 72 80 Wind dir E SE SE SE E E E E E E E E E E E E E E E E E Wind spd 13 14 13 12 11 11 11 12 14 17 14 13 12 14 12 11 13 12 16 13 12 Clouds B1 B1 B1 B1 SC SC B1 B2 SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 40 50 30 30 30 QPF 12hr 0.14 0.15 0.11 0.08 0.07 Rain shwrs C C C C C S C C C C S S C C S S S S S S C Heat index 97103105 97 91 87 85 84 95100100 93 88 85 95100102 95 90 Max heat 97 106 103 89 95 101 99 86 95 102 102 Heat Y Y Date Fri 09/05/25 Sat 09/06/25 Sun 09/07/25 Mon 09/08/25 AST 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 79 92 80 90 79 91 78 90 Temp 80 87 92 84 81 86 90 82 80 86 91 82 79 85 90 82 Dewpt 76 77 77 77 77 77 77 76 76 77 77 76 76 76 76 76 PWind dir E E E E E E E E Wind char GN BZ BZ BZ GN GN GN GN Avg clouds B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 40 50 50 50 30 50 50 50 Rain shwrs C C C C C C C C C C C C C C C C Tstms S S S S S S $$