Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
Versions:
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148 FOCA52 TJSJ 040903 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 503 AM AST Thu Sep 4 2025 PRZ001-042000- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 503 AM AST Thu Sep 4 2025 Date Thu 09/04/25 Fri 09/05/25 Sat 09/06/25 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 80 91 Temp 86 90 91 86 83 81 80 79 85 89 90 86 83 82 81 80 86 90 91 85 82 Dewpt 74 74 75 74 75 75 75 75 75 77 76 76 76 76 76 76 75 76 76 76 76 RH 68 60 60 68 77 82 85 88 72 68 64 72 80 82 85 88 70 64 62 75 82 Wind dir E E E E E E SE SE E E E E E E E E E E E E E Wind spd 8 12 14 12 9 9 6 6 8 13 16 12 9 10 9 9 10 14 14 12 10 Clouds FW SC SC SC SC SC B1 B2 B2 B1 B2 B2 SC SC B1 B1 SC SC B2 B2 SC PoP 12hr 30 60 60 40 60 QPF 12hr 0.05 0.41 0.91 0.12 0.63 Rain shwrs S C S S C C L L C L L C C C C C C L L S Tstms S S S S S Heat index 94100102 94 90 87 84 83 94101102 96 91 89 87 86 96102103 94 88 Max heat 94 102 101 88 94 102 101 90 96 104 102 Heat Y Y Date Sun 09/07/25 Mon 09/08/25 Tue 09/09/25 Wed 09/10/25 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 78 89 79 91 79 90 78 90 Temp 78 84 89 82 80 86 91 83 80 85 90 82 79 85 90 82 Dewpt 75 75 76 75 75 75 76 75 75 76 76 76 75 76 76 76 PWind dir E E E E E E E E Wind char GN GN LT GN LT GN GN GN Avg clouds SC SC B1 B2 SC SC B1 B2 SC SC B1 B1 FW SC B1 B1 PoP 12hr 40 70 40 60 40 70 30 60 Rain shwrs C C L L C C L L C C L L S C L L Tstms S S S S S S S S $$ PRZ002-042000- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 503 AM AST Thu Sep 4 2025 Date Thu 09/04/25 Fri 09/05/25 Sat 09/06/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 91 79 90 80 90 Temp 86 90 91 86 83 81 80 79 85 89 90 86 83 82 81 80 86 89 90 84 81 Dewpt 76 76 76 76 76 77 76 76 78 78 77 78 77 78 77 77 78 78 77 77 76 RH 72 64 62 72 80 88 88 91 80 70 66 77 82 88 88 91 77 70 66 80 85 Wind dir E E E E E E E E E E E E E E E E E E E E E Wind spd 9 11 11 11 10 11 11 9 9 11 12 12 12 13 11 11 12 13 11 11 10 Clouds FW SC SC SC SC B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 30 60 60 60 60 QPF 12hr 0.08 0.47 0.92 0.21 0.60 Rain shwrs S S S C C C C L L L L L L L C C L L C C C Tstms S S S S S S Heat index 95101103 96 90 88 85 84 97103103 98 92 90 87 87 97103103 94 87 Max heat 95 103 102 89 97 104 103 91 97 103 102 Heat Y Y Date Sun 09/07/25 Mon 09/08/25 Tue 09/09/25 Wed 09/10/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 77 90 79 90 79 90 78 90 Temp 77 84 90 82 80 85 90 82 80 85 90 82 79 85 90 83 Dewpt 77 77 76 76 76 77 76 76 76 77 77 76 77 77 77 76 PWind dir E E E E E E E E Wind char GN GN GN GN GN GN GN GN Avg clouds B1 SC B1 B2 SC SC B1 B2 SC SC B1 B2 SC SC B1 B1 PoP 12hr 50 70 50 60 50 70 40 60 Rain shwrs C C L L C C L L C C L L C C L L Tstms S S S S S S S S $$ PRZ007-042000- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 503 AM AST Thu Sep 4 2025 Date Thu 09/04/25 Fri 09/05/25 Sat 09/06/25 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 88 77 88 78 89 Temp 83 87 88 83 80 79 78 77 84 87 88 84 81 79 78 78 85 88 89 83 80 Dewpt 71 69 71 72 73 73 72 72 72 72 74 74 74 74 73 73 74 72 73 73 73 RH 67 55 57 70 79 82 82 85 67 61 63 72 79 85 85 85 70 59 59 72 79 Wind dir E E SE SE E NE NE NE E E SE E E NE E NE E E SE E E Wind spd 4 12 14 10 8 5 5 4 4 13 17 12 9 6 6 5 6 14 11 11 9 Wind gust 25 28 Clouds FW SC SC SC CL CL SC SC SC SC SC SC CL CL SC SC SC SC SC SC FW PoP 12hr 20 20 10 20 20 QPF 12hr 0.04 0.05 0.12 0.02 0.14 Rain shwrs S S S S S S S S S S S S S S S Heat index 88 91 94 89 85 89 94 97 91 86 83 92 96 97 90 84 Max heat 88 94 93 84 89 97 96 85 92 97 96 Heat Y Y Date Sun 09/07/25 Mon 09/08/25 Tue 09/09/25 Wed 09/10/25 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 88 77 89 77 89 76 89 Temp 76 83 88 81 78 84 88 81 78 84 89 80 77 84 89 80 Dewpt 72 72 72 73 72 72 73 72 71 71 73 73 73 73 74 74 PWind dir E E E E E E E E Wind char LT GN LT GN LT GN LT GN Avg clouds FW FW FW SC FW FW SC SC FW SC SC SC FW FW FW SC PoP 12hr 5 20 20 30 40 40 10 20 Rain shwrs S S S S S S C C S C C S S S S S $$ PRZ008-042000- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 503 AM AST Thu Sep 4 2025 Date Thu 09/04/25 Fri 09/05/25 Sat 09/06/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 89 77 89 78 88 Temp 84 88 89 84 81 79 78 77 84 88 89 84 81 80 78 78 84 87 88 83 80 Dewpt 75 75 75 74 75 75 75 73 75 76 77 76 76 76 76 74 76 76 77 75 75 RH 74 66 64 72 82 88 91 87 74 68 68 77 85 88 94 88 77 70 70 77 85 Wind dir E E E E E E E E E E E E E E E E E E E E E Wind spd 11 12 10 10 11 10 8 9 9 14 16 9 10 10 11 9 10 10 12 13 12 Clouds FW FW B1 B2 B1 FW FW FW CL CL OV OV SC SC FW FW CL CL OV OV SC PoP 12hr 60 40 80 10 70 QPF 12hr 0.83 0.04 1.98 0 1.44 Rain shwrs C L C D D S S L L S Tstms S S S S S Heat index 91 98 99 91 86 83 92 99102 93 88 84 92 98100 90 84 Max heat 91 100 98 85 92 102 100 87 92 100 98 Heat Y Y Date Sun 09/07/25 Mon 09/08/25 Tue 09/09/25 Wed 09/10/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 76 88 77 88 76 88 76 88 Temp 76 83 88 80 78 83 88 80 77 83 88 80 77 83 88 80 Dewpt 75 75 76 75 75 75 76 74 75 75 77 76 75 75 77 75 PWind dir E E E E E E E E Wind char GN LT LT LT LT GN GN GN Avg clouds SC FW SC B2 FW FW SC B2 SC SC SC B2 SC SC SC SC PoP 12hr 10 80 10 80 50 80 40 50 Rain shwrs S S D D S S D D C C D D C C C C Tstms C C C C C C $$ PRZ010-042000- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 503 AM AST Thu Sep 4 2025 Date Thu 09/04/25 Fri 09/05/25 Sat 09/06/25 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 93 75 93 76 93 Temp 85 91 93 85 80 78 76 76 85 91 93 86 81 78 77 76 86 91 93 85 80 Dewpt 75 76 77 76 76 76 74 73 75 77 79 77 77 76 75 75 77 78 78 77 76 RH 72 62 60 75 88 94 94 90 72 64 64 75 88 94 94 97 75 66 62 77 88 Wind dir E E SW E NE E E NE E E SE E E E E E E E E E E Wind spd 4 2 5 2 4 8 4 4 4 2 3 2 1 5 4 4 4 2 2 4 8 Clouds CL FW OV OV SC CL FW FW CL CL OV OV CL CL CL CL CL CL B2 B2 CL PoP 12hr 80 20 80 0 60 QPF 12hr 1.51 0.02 2.02 0 1.03 Rain shwrs L D S D D L L Tstms S S S S S S Heat index 94104107 95 87 94105110 96 88 96106109 95 84 Max heat 94 107 106 84 94 110 108 85 96 109 107 Heat Y Y Date Sun 09/07/25 Mon 09/08/25 Tue 09/09/25 Wed 09/10/25 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 74 92 75 93 74 92 74 93 Temp 75 84 92 80 76 86 93 80 75 84 92 80 75 85 93 80 Dewpt 75 76 78 76 75 76 78 77 74 76 79 77 75 76 79 77 PWind dir E E E E E E E E Wind char LT LT LT LT LT LT LT LT Avg clouds CL CL SC B1 CL FW SC B2 SC SC SC B1 SC SC SC B2 PoP 12hr 0 80 10 70 50 60 20 80 Rain shwrs D D S L L C C L L S S D D Tstms C C S S S S C C $$ VIZ001-042000- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 503 AM AST Thu Sep 4 2025 Date Thu 09/04/25 Fri 09/05/25 Sat 09/06/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 91 80 90 81 91 Temp 86 90 91 86 83 82 81 80 86 89 90 86 84 82 81 81 87 90 91 86 82 Dewpt 77 76 76 77 76 77 77 77 78 78 78 78 78 78 77 77 78 78 77 77 77 RH 75 64 62 75 80 85 88 91 77 70 68 77 82 88 88 88 75 68 64 75 85 Wind dir E E E E E E E E E E E E E E E E E E E E E Wind spd 13 13 14 13 16 18 14 13 14 14 16 17 18 20 17 17 17 16 14 13 14 Clouds SC SC SC SC SC B2 B2 B1 B2 B2 B2 B2 B1 B1 B2 B2 SC SC SC SC B2 PoP 12hr 30 60 60 50 50 QPF 12hr 0.08 0.38 0.50 0.16 0.23 Rain shwrs S S S S C C C C L C C C C C C C C C C C C Tstms S S S S S S Heat index 97102103 97 92 90 88 87 98104104 98 94 92 89 89100104104 97 91 Max heat 97 103 103 91 98 105 104 93 100 105 104 Heat Y Y Date Sun 09/07/25 Mon 09/08/25 Tue 09/09/25 Wed 09/10/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 79 89 80 90 80 90 80 90 Temp 79 85 89 83 80 86 90 83 81 86 90 83 81 86 90 83 Dewpt 77 77 77 77 77 77 77 77 77 78 78 77 77 78 77 77 PWind dir E E E E E E E E Wind char BZ BZ BZ BZ BZ BZ BZ BZ Avg clouds B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 50 50 50 50 50 50 40 40 Rain shwrs C C C C C C C C C C C C C C C C $$ VIZ002-042000- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 503 AM AST Thu Sep 4 2025 Date Thu 09/04/25 Fri 09/05/25 Sat 09/06/25 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 91 80 91 Temp 86 90 91 86 83 81 80 79 86 90 91 86 83 82 81 80 86 90 91 85 81 Dewpt 76 75 76 76 76 76 76 76 78 77 77 77 77 77 77 77 77 76 76 77 76 RH 72 62 62 72 80 85 88 91 77 66 64 75 82 85 88 91 75 64 62 77 85 Wind dir E E E E E E E E E SE E E E E E E E E E E E Wind spd 12 13 14 13 12 13 12 12 13 14 16 14 14 16 16 14 14 16 14 13 13 Clouds SC SC FW SC SC B2 B1 B2 B2 B1 B2 B2 SC SC B2 B2 SC SC SC SC B2 PoP 12hr 30 60 60 50 50 QPF 12hr 0.06 0.37 0.47 0.15 0.23 Rain shwrs C S S S C C C L C C C C C C C C C C C C Tstms S S S Heat index 96101102 95 90 87 85 84 98103104 98 93 89 87 87 97102103 95 88 Max heat 96 102 102 89 98 104 104 91 97 103 102 Heat Y Y Date Sun 09/07/25 Mon 09/08/25 Tue 09/09/25 Wed 09/10/25 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 90 79 91 79 91 78 91 Temp 78 84 90 82 80 86 91 83 80 86 91 82 79 86 91 82 Dewpt 76 76 76 76 76 76 76 76 76 77 77 76 76 77 77 76 PWind dir E E E E E E E E Wind char GN GN GN BZ GN BZ BZ GN Avg clouds B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 50 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 $$