Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
662 FOCA52 TJSJ 030903 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 503 AM AST Wed Sep 3 2025 PRZ001-032000- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 503 AM AST Wed Sep 3 2025 Date Wed 09/03/25 Thu 09/04/25 Fri 09/05/25 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 89 90 85 82 Dewpt 76 76 76 75 75 75 75 74 75 75 75 75 75 75 75 74 75 76 76 76 76 RH 72 64 62 70 77 82 85 85 72 64 62 70 77 79 82 82 70 66 64 75 82 Wind dir SE E E E E SE SE SE E E E E E E SE E E E E E E Wind spd 8 11 14 11 8 9 8 5 9 12 13 12 9 9 5 6 10 13 14 13 10 Clouds B1 B1 B2 B1 SC SC B1 SC CL SC CL SC CL CL SC SC SC SC SC SC SC PoP 12hr 60 40 30 30 30 QPF 12hr 0.60 0.07 0.08 0.10 0.13 Rain shwrs C C L C S S C S S C S S C C C C C Tstms S Heat index 96101103 95 90 87 84 83 94 99100 94 90 88 86 85 95100102 95 90 Max heat 96 103 102 88 94 101 100 89 95 102 101 Heat Y Y Date Sat 09/06/25 Sun 09/07/25 Mon 09/08/25 Tue 09/09/25 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 79 90 79 90 78 91 Temp 80 85 90 82 80 85 89 82 80 85 90 82 80 85 90 82 Dewpt 76 76 76 76 75 75 76 75 75 75 75 75 75 75 76 76 PWind dir E E E E SE E E E Wind char GN GN GN GN LT GN LT GN Avg clouds B1 B1 B1 B2 SC SC SC B2 SC SC B1 B2 SC SC B1 B1 PoP 12hr 40 70 40 70 40 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 $$ PRZ002-032000- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 503 AM AST Wed Sep 3 2025 Date Wed 09/03/25 Thu 09/04/25 Fri 09/05/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 90 78 90 80 91 Temp 85 89 90 85 82 80 79 78 85 89 90 86 83 82 81 80 86 89 90 86 83 Dewpt 77 77 77 77 76 76 76 75 76 77 76 77 76 77 76 76 77 78 77 78 77 RH 77 68 66 77 82 88 91 91 75 68 64 75 80 85 85 88 75 70 66 77 82 Wind dir E SE SE SE E E E E E E E E E E E E E E E E E Wind spd 11 12 11 11 11 11 9 9 10 12 11 12 10 11 9 10 11 13 12 11 11 Clouds B1 SC B2 B2 B2 SC B2 B1 SC SC CL SC SC SC B2 B2 B2 B2 B2 B2 B2 PoP 12hr 50 50 30 50 60 QPF 12hr 0.45 0.19 0.06 0.25 0.81 Rain shwrs C C C C C C C C S S C S S C C C C L L L Tstms S S S S S S Heat index 96102102 96 88 85 94101102 96 91 89 86 86 97103103 98 92 Max heat 96 103 102 87 94 102 101 90 97 104 103 Heat Y Y Date Sat 09/06/25 Sun 09/07/25 Mon 09/08/25 Tue 09/09/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 80 91 79 90 78 89 76 90 Temp 81 86 91 83 80 85 90 82 79 84 89 81 78 84 89 81 Dewpt 77 78 78 76 77 77 77 76 76 77 76 76 77 77 77 76 PWind dir E E E E E E E E Wind char GN GN GN GN GN GN GN GN Avg clouds B2 B2 B2 B2 SC SC B1 B2 SC SC B1 B2 SC SC B1 B1 PoP 12hr 60 60 50 70 50 70 50 70 Rain shwrs L L L L C C L L C C L L C C L L Tstms S S S S S S S S S $$ PRZ007-032000- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 503 AM AST Wed Sep 3 2025 Date Wed 09/03/25 Thu 09/04/25 Fri 09/05/25 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 78 89 Temp 84 88 89 84 81 79 78 78 84 87 88 84 81 80 78 78 84 87 88 83 80 Dewpt 74 73 74 73 74 73 73 71 70 72 72 72 73 72 71 70 71 72 73 74 74 RH 72 61 61 70 79 82 85 79 63 61 59 67 77 77 79 76 65 61 61 74 82 Wind dir E SE SE SE E NE NE NE E E SE SE E NE NE NE E E SE SE E Wind spd 5 11 11 10 8 6 6 5 4 14 13 10 9 9 5 4 5 13 12 12 8 Wind gust 25 Clouds SC SC B2 B1 SC SC FW CL CL CL SC SC CL CL FW FW SC SC SC SC CL PoP 12hr 50 20 10 5 10 QPF 12hr 0.34 0.02 0.10 0.01 0.02 Rain shwrs S S C C S S S S S S S S Tstms S Heat index 91 96 97 90 86 83 88 94 95 89 86 83 89 94 95 90 85 Max heat 91 98 97 85 88 95 94 85 89 95 95 Heat Y Y Date Sat 09/06/25 Sun 09/07/25 Mon 09/08/25 Tue 09/09/25 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 89 77 89 77 88 76 90 Temp 78 84 89 81 78 84 88 80 77 84 88 81 78 84 89 80 Dewpt 73 73 73 73 72 72 72 73 72 73 73 72 71 72 73 73 PWind dir E E NE E E E E E Wind char LT GN LT GN LT GN LT GN Avg clouds FW SC SC SC FW FW FW SC FW FW SC SC FW SC SC SC PoP 12hr 20 30 5 20 10 30 40 40 Rain shwrs S S C C S S S S S S C C S C C S $$ PRZ008-032000- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 503 AM AST Wed Sep 3 2025 Date Wed 09/03/25 Thu 09/04/25 Fri 09/05/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 89 77 89 78 89 Temp 84 88 89 84 81 79 78 78 84 88 89 84 81 80 78 78 84 87 88 83 80 Dewpt 75 76 77 75 75 75 75 73 75 76 76 75 75 75 75 73 75 76 77 75 76 RH 74 68 68 74 82 88 91 85 74 68 66 74 82 85 91 85 74 70 70 77 88 Wind dir E E NE E E E E E E E E E E E E E E E NE E E Wind spd 5 4 6 4 2 4 5 6 10 11 11 6 9 8 8 8 10 12 14 10 16 Clouds SC SC OV OV SC SC CL CL CL CL CL B1 CL CL FW FW FW FW B2 B2 SC PoP 12hr 80 0 40 5 60 QPF 12hr 1.76 0 0.87 0 1.50 Rain shwrs C L D C L L S Tstms S S S S S Heat index 92 99101 91 86 83 92 99100 92 87 84 91 98100 91 87 Max heat 92 102 100 85 92 101 99 86 91 100 99 Heat Y Y Date Sat 09/06/25 Sun 09/07/25 Mon 09/08/25 Tue 09/09/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 77 88 77 89 77 88 75 89 Temp 78 83 88 80 77 83 88 80 77 83 88 80 77 83 88 80 Dewpt 76 76 77 76 75 76 76 74 75 75 76 74 75 75 77 75 PWind dir E E E E E E E E Wind char GN GN GN GN LT GN LT GN Avg clouds SC FW SC B2 FW FW SC B2 FW FW SC B2 SC SC SC B2 PoP 12hr 10 80 5 80 10 80 50 80 Rain shwrs S D D S S D D S S D D C C D D Tstms C C C C C C C C $$ PRZ010-032000- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 503 AM AST Wed Sep 3 2025 Date Wed 09/03/25 Thu 09/04/25 Fri 09/05/25 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 74 93 76 93 Temp 85 91 93 85 80 77 75 75 86 92 94 86 81 79 77 76 86 91 93 85 81 Dewpt 76 78 79 77 76 76 75 73 75 76 78 77 76 76 75 74 75 77 78 78 77 RH 75 66 64 77 88 97100 94 70 60 60 75 85 91 94 94 70 64 62 80 88 Wind dir E SE N NE E E NE E E E W NE E E E E E E NE E E Wind spd 4 2 2 4 3 4 4 4 4 1 2 6 1 6 4 3 5 2 6 6 2 Clouds SC SC B2 B2 SC SC CL CL CL CL B2 OV CL CL FW FW CL CL OV OV CL PoP 12hr 60 0 80 5 80 QPF 12hr 0.99 0 1.53 0 2.00 Rain shwrs S L C L D D D Tstms S S S S S S Heat index 95106110 95 85 95105110 97 88 95105108 97 88 Max heat 95 110 108 95 110 109 86 95 108 107 Heat Y Y Date Sat 09/06/25 Sun 09/07/25 Mon 09/08/25 Tue 09/09/25 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 75 93 75 93 73 93 Temp 76 86 93 80 76 85 93 80 76 85 93 80 75 85 93 80 Dewpt 75 77 79 76 75 76 78 76 74 76 78 77 74 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 CL SC B1 CL FW SC B2 SC SC SC SC PoP 12hr 0 70 0 80 10 80 50 50 Rain shwrs L L D D S D D C C C C Tstms S S C C C C $$ VIZ001-032000- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 503 AM AST Wed Sep 3 2025 Date Wed 09/03/25 Thu 09/04/25 Fri 09/05/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 90 80 91 81 92 Temp 86 89 90 86 83 82 81 80 86 90 91 87 84 83 82 81 87 90 91 87 84 Dewpt 78 77 77 76 76 76 76 75 77 77 76 77 76 77 76 77 78 78 78 78 77 RH 77 68 66 72 80 82 85 85 75 66 62 72 77 82 82 88 75 68 66 75 80 Wind dir E SE E E E E E E E E E E E E E E E E E E E Wind spd 14 14 16 14 16 16 13 14 13 13 16 14 16 14 14 16 16 16 16 16 18 Clouds B1 SC SC SC SC SC SC SC SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 PoP 12hr 40 20 30 40 40 QPF 12hr 0.11 0.02 0.07 0.23 0.19 Rain shwrs C S S S S S S S S S S C C C C C C C C C Tstms S S S Heat index 98102103 96 91 89 87 86 97102103 98 93 91 89 89 99105105100 94 Max heat 98 103 102 90 97 103 103 92 99 106 105 Heat Y Y Date Sat 09/06/25 Sun 09/07/25 Mon 09/08/25 Tue 09/09/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 81 90 80 90 80 89 79 91 Temp 82 86 90 83 81 86 90 83 81 85 89 83 80 86 90 83 Dewpt 77 78 77 77 77 77 77 77 77 77 77 77 77 78 77 77 PWind dir E E E E E E E E Wind char BZ BZ BZ BZ BZ BZ BZ BZ Avg clouds B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 50 50 50 50 50 50 50 50 Rain shwrs C C C C C C C C C C C C C C C C Tstms S $$ VIZ002-032000- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 503 AM AST Wed Sep 3 2025 Date Wed 09/03/25 Thu 09/04/25 Fri 09/05/25 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 92 79 92 Temp 86 90 91 86 83 82 81 80 87 91 92 86 83 81 80 79 86 90 91 86 83 Dewpt 76 76 76 76 76 75 75 75 76 76 76 76 76 76 76 76 77 77 77 78 77 RH 72 64 62 72 80 79 82 85 70 62 60 72 80 85 88 91 75 66 64 77 82 Wind dir E SE E E E E E E E E E E E E E E E E E E E Wind spd 13 16 16 13 12 12 12 11 11 13 14 13 12 13 13 13 14 14 14 14 16 Clouds B1 B1 SC SC SC SC SC SC SC SC FW SC SC SC B1 B1 B2 B2 B1 B1 SC PoP 12hr 40 20 30 50 50 QPF 12hr 0.09 0.04 0.07 0.24 0.19 Rain shwrs C C S S S S S S S C C C C C C C C C Tstms S S Heat index 96101102 96 91 88 86 86 97102104 96 91 87 85 84 97103104 98 92 Max heat 96 102 102 90 97 104 103 89 97 104 104 Heat Y Y Date Sat 09/06/25 Sun 09/07/25 Mon 09/08/25 Tue 09/09/25 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 80 91 78 90 77 90 78 91 Temp 81 86 91 82 79 85 90 81 78 85 90 82 80 85 90 82 Dewpt 77 77 77 76 76 76 76 76 76 77 76 76 76 77 76 76 PWind dir E E E E E E E E Wind char BZ GN GN GN GN GN GN GN Avg clouds B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 50 50 40 50 50 50 50 50 Rain shwrs C C C C C C C C C C C C C C C C $$