Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
559 FOCA52 TJSJ 040903 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 503 AM AST Mon Aug 4 2025 PRZ001-042000- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 503 AM AST Mon Aug 4 2025 Date Mon 08/04/25 Tue 08/05/25 Wed 08/06/25 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 78 89 Temp 86 90 91 88 84 82 81 81 86 89 90 86 82 80 79 79 85 88 89 86 82 Dewpt 75 76 76 75 75 75 75 75 75 76 75 76 76 76 75 75 75 76 76 76 75 RH 70 64 62 66 74 79 82 82 70 66 62 72 82 88 88 88 72 68 66 72 79 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 10 13 16 12 10 9 9 9 9 13 14 13 11 8 6 6 8 12 16 13 9 Clouds SC SC SC SC FW SC SC SC SC SC SC SC SC SC B1 B1 SC SC SC SC SC PoP 12hr 30 20 30 40 20 QPF 12hr 0.31 0.04 0.18 0.10 0.08 Rain shwrs S S C C S S S S C C C S S C C S S S S S Obvis H H H H H H Heat index 96 99 97 97 91 89 86 87 95101101 96 89 86 83 93 99100 96 89 Max heat 96 99 101 91 95 101 100 88 93 100 100 Heat Y Y Date Thu 08/07/25 Fri 08/08/25 Sat 08/09/25 Sun 08/10/25 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 92 78 91 78 91 79 91 Temp 80 87 92 83 79 86 91 82 79 86 91 83 80 86 91 83 Dewpt 74 75 75 75 74 74 74 74 74 75 75 75 74 74 75 75 PWind dir E E E E E E E E Wind char LT GN LT GN LT GN LT GN Avg clouds SC SC SC SC SC SC SC SC SC SC SC FW B1 B1 B2 B1 PoP 12hr 30 30 20 20 30 40 60 60 Rain shwrs S C C S S S S S S C C C C L L C Tstms S S S $$ PRZ002-042000- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 503 AM AST Mon Aug 4 2025 Date Mon 08/04/25 Tue 08/05/25 Wed 08/06/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 90 81 90 79 90 Temp 87 89 90 87 84 83 82 82 87 89 90 87 83 81 80 80 86 89 90 87 83 Dewpt 76 76 76 76 76 76 75 75 76 76 76 76 76 76 75 75 76 76 76 76 75 RH 70 66 64 70 77 80 79 79 70 66 64 70 80 85 85 85 72 66 64 70 77 Wind dir E E E E E E E E E E E E E E E E E E E E E Wind spd 12 14 14 10 10 9 10 10 11 12 11 11 10 9 8 8 10 11 10 10 9 Clouds SC SC SC FW SC SC SC SC SC SC B1 B1 SC SC B2 B2 B2 B2 SC SC SC PoP 12hr 20 20 40 60 50 QPF 12hr 0.05 0.05 0.25 0.15 0.12 Rain shwrs S S S S S S S S C C C C C L L C C C C C Obvis H H H H H H H H Heat index 97 98 96 98 93 91 88 88 97101102 97 90 88 84 85 96101102 97 91 Max heat 97 100 100 92 97 103 101 89 96 102 101 Heat Y Y Date Thu 08/07/25 Fri 08/08/25 Sat 08/09/25 Sun 08/10/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 80 90 81 90 80 90 80 90 Temp 81 86 90 84 82 87 90 83 81 86 90 83 81 86 90 84 Dewpt 74 75 75 75 74 75 75 75 75 75 75 75 75 75 76 75 PWind dir E E E E E E E E Wind char GN GN LT GN LT GN GN GN Avg clouds SC SC SC B1 B1 B1 SC SC B1 B1 SC SC B1 B1 B2 B1 PoP 12hr 30 40 40 40 40 40 60 60 Rain shwrs C C C C C C C C C C C C C L L C Tstms S S S $$ PRZ007-042000- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 503 AM AST Mon Aug 4 2025 Date Mon 08/04/25 Tue 08/05/25 Wed 08/06/25 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 90 76 92 76 90 Temp 85 89 90 86 81 79 77 78 86 91 92 87 81 79 77 77 85 89 90 86 81 Dewpt 75 77 77 77 76 74 72 72 74 76 77 77 76 73 73 72 75 76 78 77 75 RH 72 68 66 75 85 85 85 82 68 62 62 72 85 82 87 85 72 66 68 75 82 Wind dir E SE SE SE E NE NE NE E SE SE E E NE NE NE E E E E E Wind spd 10 13 14 11 8 5 5 5 5 16 16 12 9 5 4 4 4 14 14 12 8 Wind gust 26 26 25 Clouds FW FW SC FW FW CL FW FW SC FW SC SC FW FW FW FW CL CL SC SC CL PoP 12hr 10 5 20 5 30 QPF 12hr 0.02 0.02 0.10 0.01 0.09 Rain shwrs S S S S S C C Obvis H H H H H H H H Heat index 94 99 97 97 87 94103106 99 88 82 93101105 97 86 Max heat 94 99 100 84 94 106 105 86 93 105 103 Heat Y Y Date Thu 08/07/25 Fri 08/08/25 Sat 08/09/25 Sun 08/10/25 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 90 76 91 76 91 76 91 Temp 77 85 90 81 77 85 91 81 77 85 91 81 77 85 91 82 Dewpt 73 73 77 75 72 73 76 75 72 73 77 76 72 74 77 75 PWind dir NE E E E E E NE E Wind char LT GN LT GN LT GN LT GN Avg clouds CL FW FW FW CL FW FW CL CL FW SC SC SC SC SC B1 PoP 12hr 10 10 5 5 5 20 20 40 Rain shwrs S S S S S S S S S C C $$ PRZ008-042000- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 503 AM AST Mon Aug 4 2025 Date Mon 08/04/25 Tue 08/05/25 Wed 08/06/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 89 77 89 77 88 Temp 84 88 89 85 81 79 78 78 84 88 89 85 81 79 78 78 84 87 88 84 80 Dewpt 75 76 76 76 77 76 75 75 75 75 75 74 75 76 76 76 75 75 76 75 75 RH 74 68 66 75 88 91 91 91 74 66 64 70 82 91 94 94 74 68 68 74 85 Wind dir E E E E E E E E E E NE E E E E E E E NE E E Wind spd 6 5 11 13 12 8 12 10 11 10 16 14 14 13 13 11 12 11 12 9 10 Clouds CL CL SC B2 SC FW FW FW FW FW SC SC SC SC FW FW SC SC SC SC SC PoP 12hr 50 20 30 30 30 QPF 12hr 1.18 0.02 0.06 0.05 0.09 Rain shwrs S C S S S S C C S S C C S Tstms S Obvis H H H H H H H Heat index 92 96 94 95 88 84 93 98 99 93 87 84 92 97 99 92 85 Max heat 92 96 99 87 93 99 98 86 92 99 98 Heat Y Y Date Thu 08/07/25 Fri 08/08/25 Sat 08/09/25 Sun 08/10/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 76 88 76 89 76 88 77 88 Temp 77 83 88 80 77 84 89 80 77 83 88 81 78 84 88 81 Dewpt 75 73 75 75 75 73 75 75 75 74 75 75 76 74 75 75 PWind dir E NE E E E E E E Wind char GN GN GN GN GN GN GN BZ Avg clouds SC FW FW SC FW FW FW SC CL FW FW FW CL SC B2 B2 PoP 12hr 20 40 5 30 5 5 60 60 Rain shwrs S S C C S S C C L L L Tstms S S S $$ PRZ010-042000- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 503 AM AST Mon Aug 4 2025 Date Mon 08/04/25 Tue 08/05/25 Wed 08/06/25 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 94 75 93 Temp 86 92 93 87 81 78 76 77 87 93 94 88 81 79 76 77 86 92 93 87 80 Dewpt 76 78 79 78 77 76 75 73 75 77 79 77 76 76 74 74 76 77 78 77 76 RH 72 64 64 75 88 94 97 87 68 60 62 70 85 91 94 90 72 62 62 72 88 Wind dir E E E E NE E E E E E S E E E E E E E E E E Wind spd 4 2 3 6 5 6 6 4 3 4 5 4 5 8 10 8 5 2 4 1 2 Clouds CL CL SC B1 SC CL FW FW FW FW SC SC B2 B2 FW FW CL CL OV OV SC PoP 12hr 40 20 50 50 70 QPF 12hr 0.61 0.02 0.37 0.05 1.45 Rain shwrs C C S S S C C C L L S Tstms S S S S Obvis H H H H H H Heat index 96103104101 88 96107107100 88 96106109 99 86 Max heat 96 104 104 85 96 107 107 86 96 109 107 Heat Y Y Date Thu 08/07/25 Fri 08/08/25 Sat 08/09/25 Sun 08/10/25 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 93 74 93 74 93 74 93 Temp 75 86 93 80 75 86 93 80 75 86 93 80 75 86 93 81 Dewpt 74 75 78 76 74 75 77 75 73 75 78 76 74 75 78 76 PWind dir E NE E E E E E E Wind char LT LT LT LT LT LT LT LT Avg clouds SC FW FW SC CL CL FW SC FW FW SC B1 CL FW B1 B1 PoP 12hr 10 50 0 50 5 60 40 60 Rain shwrs S S C C C C L L C L L Tstms S S S S S S $$ VIZ001-042000- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 503 AM AST Mon Aug 4 2025 Date Mon 08/04/25 Tue 08/05/25 Wed 08/06/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 90 80 90 78 89 Temp 87 90 90 87 83 82 81 81 86 89 90 86 82 80 79 79 85 88 89 86 83 Dewpt 77 76 76 76 76 77 76 76 76 76 76 77 76 76 76 76 76 76 76 76 76 RH 72 64 64 70 80 85 85 85 72 66 64 75 82 88 91 91 75 68 66 72 80 Wind dir E E E E E E E E E E E E E E E E E E E E E Wind spd 17 19 17 13 13 16 16 16 16 13 13 13 13 13 13 13 13 13 13 12 12 Clouds SC SC SC CL FW SC SC SC SC SC SC SC SC SC SC SC B1 B1 SC SC SC PoP 12hr 20 20 30 40 40 QPF 12hr 0.05 0.04 0.18 0.07 0.10 Rain shwrs S S S S S S S C S S S S S S C C S S C Obvis H H H H H H H H Heat index 99 98 96 97 92 90 87 87 96101102 98 89 86 83 94 99100 96 91 Max heat 99 100 101 91 96 103 101 88 94 100 100 Date Thu 08/07/25 Fri 08/08/25 Sat 08/09/25 Sun 08/10/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 80 92 81 91 81 92 81 92 Temp 81 87 92 85 82 87 91 84 82 88 92 85 82 88 92 85 Dewpt 76 75 75 76 75 75 75 75 76 76 75 76 76 76 76 76 PWind dir E E E E E E E E Wind char GN GN GN GN GN GN GN GN Avg clouds SC SC SC SC B1 B1 SC SC B1 B1 SC SC B2 B2 B2 B1 PoP 12hr 30 40 40 40 40 50 60 60 Rain shwrs C C S C C C C C C C C C C L L C Tstms S S S S S $$ VIZ002-042000- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 503 AM AST Mon Aug 4 2025 Date Mon 08/04/25 Tue 08/05/25 Wed 08/06/25 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 90 78 90 79 90 Temp 86 89 90 86 82 80 79 79 85 89 90 87 83 81 80 80 86 89 90 86 82 Dewpt 76 76 76 76 75 76 75 75 76 76 76 76 76 76 75 75 75 76 76 76 75 RH 72 66 64 72 79 88 88 88 75 66 64 70 80 85 85 85 70 66 64 72 79 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 19 17 16 14 12 13 14 13 14 14 13 13 12 11 12 11 12 14 13 11 11 Clouds SC SC SC CL FW SC SC SC SC SC SC SC SC SC SC SC B1 B1 SC SC FW PoP 12hr 20 30 30 40 40 QPF 12hr 0.04 0.06 0.16 0.06 0.07 Rain shwrs S S S S S S S C C S S S S S S C C S S Obvis H H H H H H H H Heat index 96 98 96 96 89 86 83 95101102 97 90 88 84 85 95101102 96 89 Max heat 96 99 99 88 95 102 101 89 95 102 101 Date Thu 08/07/25 Fri 08/08/25 Sat 08/09/25 Sun 08/10/25 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 90 78 89 78 90 79 90 Temp 79 85 90 82 79 85 89 82 79 85 90 83 80 86 90 83 Dewpt 75 75 75 75 75 75 75 74 75 75 75 75 75 76 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 SC SC SC FW FW SC SC SC SC B2 B2 B1 SC PoP 12hr 10 30 30 20 30 50 50 50 Rain shwrs S S C C C S S S C C C C C C C Tstms S S S S $$