Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
782 FOCA52 TJSJ 100903 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 503 AM AST Wed Sep 10 2025 PRZ001-102000- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 503 AM AST Wed Sep 10 2025 Date Wed 09/10/25 Thu 09/11/25 Fri 09/12/25 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 91 79 92 Temp 86 90 91 86 83 82 81 80 86 90 91 86 83 81 80 79 87 91 92 86 82 Dewpt 76 76 76 76 76 76 76 75 76 76 76 76 75 76 75 75 75 76 75 75 75 RH 72 64 62 72 80 82 85 85 72 64 62 72 77 85 85 88 68 62 58 70 79 Wind dir SE E E E E E SE E E E E E E E E E SE E E E E Wind spd 5 12 14 12 9 8 9 9 10 14 14 12 9 6 6 6 8 11 16 12 6 Clouds SC B1 B2 B2 B1 SC SC B2 SC SC SC SC SC SC SC SC SC SC SC SC B1 PoP 12hr 60 50 20 20 40 QPF 12hr 0.60 0.09 0.11 0.03 0.53 Rain shwrs C C L C C C S C S S S S S S S S S S C C C Tstms S S Heat index 96102103 96 91 89 87 85 96102103 96 90 87 85 96103103 95 89 Max heat 96 103 102 91 96 103 102 89 96 103 102 Heat Y Y Date Sat 09/13/25 Sun 09/14/25 Mon 09/15/25 Tue 09/16/25 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 92 79 91 79 92 79 92 Temp 79 86 92 83 80 86 91 83 80 87 92 83 80 87 92 83 Dewpt 74 75 75 75 75 75 76 76 75 76 76 76 76 76 76 76 PWind dir SE E SE E SE E E E Wind char LT GN LT GN LT GN LT GN Avg clouds B1 B1 SC SC SC SC SC B1 SC SC SC B1 B2 B2 B2 B2 PoP 12hr 40 30 20 40 30 50 50 60 Rain shwrs C C C C S S C C C C C C C C L L Tstms S S S S S S S C C $$ PRZ002-102000- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 503 AM AST Wed Sep 10 2025 Date Wed 09/10/25 Thu 09/11/25 Fri 09/12/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 89 81 89 80 90 Temp 85 88 89 86 83 82 81 81 86 88 89 85 83 81 80 80 86 89 90 86 83 Dewpt 77 78 78 78 78 78 77 76 77 77 77 77 76 76 76 76 77 77 76 76 75 RH 77 72 70 77 85 88 88 85 75 70 68 77 80 85 88 88 75 68 64 72 77 Wind dir SE SE E E E E E E E E E E E E E E E E E E E Wind spd 10 12 11 10 10 10 11 10 11 13 11 9 8 8 9 9 10 10 10 8 6 Clouds B1 B2 B2 B2 B2 B1 SC B2 B2 SC SC SC SC SC SC SC SC SC SC SC B2 PoP 12hr 60 50 50 30 50 QPF 12hr 0.64 0.12 0.08 0.05 0.46 Rain shwrs C C L C C C C C C S S S S S C C S S C C C Tstms S S Heat index 96102103 98 93 91 88 87 97100102 96 91 87 86 86 97102102 96 90 Max heat 96 103 103 93 97 102 99 89 97 103 100 Heat Y Y Date Sat 09/13/25 Sun 09/14/25 Mon 09/15/25 Tue 09/16/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 80 90 80 90 80 90 80 90 Temp 81 86 90 83 81 86 90 83 81 86 90 83 81 86 90 83 Dewpt 75 77 76 76 76 77 76 77 77 77 77 76 77 78 77 77 PWind dir E E E E E E E E Wind char LT GN GN GN GN GN GN GN Avg clouds B2 B1 SC SC CL FW SC B1 SC SC SC B1 B2 B1 B1 B2 PoP 12hr 50 30 20 40 30 50 50 60 Rain shwrs C C C C S C C C C C C C C L L Tstms S S S S S S S C C $$ PRZ007-102000- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 503 AM AST Wed Sep 10 2025 Date Wed 09/10/25 Thu 09/11/25 Fri 09/12/25 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 91 77 91 Temp 85 89 90 85 82 80 79 78 86 90 91 85 81 79 78 77 85 90 91 85 81 Dewpt 72 73 73 74 74 74 72 72 70 69 72 72 72 71 70 69 71 71 70 70 70 RH 65 59 58 70 77 82 79 82 59 50 54 65 74 77 76 76 63 54 50 61 69 Wind dir E SE SE SE E E NE NE E E SE SE E NE NE NE E SE SE SE E Wind spd 10 11 10 10 6 5 6 5 5 14 12 10 6 5 3 4 5 12 12 9 6 Clouds FW SC SC SC SC SC SC SC CL SC FW FW SC SC CL CL FW FW SC SC FW PoP 12hr 10 30 10 10 20 QPF 12hr 0.04 0.04 0.02 0.01 0.15 Rain shwrs S S S S S S C S S S S S S S Heat index 91 97 98 93 88 84 91 95 99 91 85 90 96 97 90 85 Max heat 91 98 97 86 91 99 97 84 90 98 96 Heat Y Y Date Sat 09/13/25 Sun 09/14/25 Mon 09/15/25 Tue 09/16/25 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 91 77 90 77 91 77 92 Temp 78 85 91 81 78 85 90 81 78 85 91 81 78 86 92 82 Dewpt 68 71 73 71 71 71 72 74 70 68 73 74 72 73 74 73 PWind dir E E E E E E NE E Wind char LT GN LT GN LT GN LT GN Avg clouds FW FW FW FW CL CL FW SC SC SC FW FW FW FW SC SC PoP 12hr 10 10 0 20 20 5 5 20 Rain shwrs S S S S S S S S S S $$ PRZ008-102000- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 503 AM AST Wed Sep 10 2025 Date Wed 09/10/25 Thu 09/11/25 Fri 09/12/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 87 77 88 76 89 Temp 82 86 87 83 80 79 78 77 83 87 88 83 80 78 77 76 84 88 89 83 80 Dewpt 75 75 76 76 77 77 75 73 76 76 77 76 76 76 75 73 75 76 76 75 75 RH 79 70 70 80 91 94 91 87 80 70 70 80 88 94 94 90 74 68 66 77 85 Wind dir E E NE NE E E E E E E NE NE E E E E E E NE NE E Wind spd 5 4 9 9 5 6 6 11 10 10 5 10 16 13 8 8 8 5 5 3 8 Clouds CL FW B2 B2 SC SC SC SC FW CL B1 B1 B2 B2 SC SC CL CL B2 B2 B2 PoP 12hr 60 20 50 50 60 QPF 12hr 1.04 0.03 0.77 0.05 0.89 Rain shwrs L L S S S S C C C C S S L L L Tstms S S S S S S S S S Heat index 89 95 98 91 87 91 98100 91 86 92 99100 90 85 Max heat 89 98 96 91 100 99 92 100 99 Heat Y Y Date Sat 09/13/25 Sun 09/14/25 Mon 09/15/25 Tue 09/16/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 76 88 76 87 77 89 77 88 Temp 77 83 88 80 77 82 87 80 78 84 89 81 78 83 88 80 Dewpt 75 75 75 74 74 74 76 75 75 76 77 75 75 76 77 76 PWind dir E NE E NE E E E E Wind char LT LT GN GN LT GN GN GN Avg clouds B2 B1 SC B1 SC FW FW SC CL FW SC SC SC FW SC B1 PoP 12hr 60 60 10 40 10 20 10 50 Rain shwrs L L L L S S C C S S S S S C C Tstms S S S S S S S S $$ PRZ010-102000- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 503 AM AST Wed Sep 10 2025 Date Wed 09/10/25 Thu 09/11/25 Fri 09/12/25 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 76 93 75 94 Temp 85 91 93 86 81 79 77 77 86 91 93 85 80 78 76 76 86 92 94 86 81 Dewpt 76 77 76 77 78 76 75 75 76 76 79 78 77 76 75 74 76 77 78 77 76 RH 75 64 58 75 91 91 94 94 72 62 64 80 91 94 97 94 72 62 60 75 85 Wind dir E SE SE N NE E E E E E NW NE E E E E E E SW NE E Wind spd 8 10 8 9 2 3 3 4 4 2 4 10 10 5 5 3 2 2 5 4 3 Clouds CL FW B1 B2 SC FW SC FW CL FW B2 B2 B2 B2 SC SC CL CL B2 B2 B2 PoP 12hr 50 20 60 50 60 QPF 12hr 0.42 0.01 1.05 0.04 1.00 Rain shwrs C C S S L L C C S S L L C Tstms S S S S S S S Heat index 94105106 97 89 96103110 97 87 96106110 97 87 Max heat 94 106 105 87 96 110 109 96 110 109 Heat Y Y Date Sat 09/13/25 Sun 09/14/25 Mon 09/15/25 Tue 09/16/25 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 94 75 92 75 94 75 94 Temp 76 86 94 81 76 85 92 80 76 86 94 81 76 86 94 81 Dewpt 75 75 78 76 75 76 78 77 75 77 79 77 75 76 79 77 PWind dir E SE E E E SE E E Wind char LT LT LT LT LT LT LT LT Avg clouds B2 SC SC SC CL CL SC B1 CL CL SC SC CL CL SC B1 PoP 12hr 50 50 0 60 0 50 0 60 Rain shwrs C C C C L L C C L L Tstms S S S S S S S S C C $$ VIZ001-102000- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 503 AM AST Wed Sep 10 2025 Date Wed 09/10/25 Thu 09/11/25 Fri 09/12/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 91 83 91 83 91 Temp 88 90 91 88 85 84 83 83 88 90 91 88 85 84 83 83 88 90 91 88 85 Dewpt 78 78 78 79 78 78 77 77 77 77 76 77 77 77 77 77 77 77 76 76 76 RH 72 68 66 75 80 82 82 82 70 66 62 70 77 80 82 82 70 66 62 68 75 Wind dir SE SE E E E E E E E E E E E E E E E E E E E Wind spd 16 16 14 13 16 18 14 17 16 16 13 11 11 14 13 13 13 13 11 9 12 Clouds B2 B2 B1 B1 B2 B2 B2 B2 SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 50 50 20 30 20 QPF 12hr 0.63 0.12 0.05 0.05 0.02 Rain shwrs C C C C C C C C S S S S S S C C S S S S S Heat index 102105106103 97 95 92 92100103103100 96 94 92 92100103103 99 94 Max heat 102 106 106 97 100 103 103 94 100 105 103 Heat Y Y Date Sat 09/13/25 Sun 09/14/25 Mon 09/15/25 Tue 09/16/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 83 91 82 91 82 92 82 92 Temp 83 88 91 85 82 87 91 85 82 88 92 85 83 88 92 85 Dewpt 76 77 76 76 76 78 77 77 77 78 77 77 78 78 77 78 PWind dir E E E E E E E E Wind char GN GN GN BZ BZ BZ BZ BZ Avg clouds SC SC SC SC CL FW FW SC CL FW SC SC SC SC SC B1 PoP 12hr 20 30 5 20 20 20 20 40 Rain shwrs S S C C S S S S S S S C C Tstms S $$ VIZ002-102000- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 503 AM AST Wed Sep 10 2025 Date Wed 09/10/25 Thu 09/11/25 Fri 09/12/25 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 79 90 79 91 Temp 85 89 90 85 82 81 80 79 85 89 90 85 82 81 80 79 86 90 91 86 83 Dewpt 77 78 77 78 77 76 76 76 77 76 76 76 76 76 76 75 76 76 75 75 75 RH 77 70 66 80 85 85 88 91 77 66 64 75 82 85 88 88 72 64 60 70 77 Wind dir SE E E E E E E E E E E E E E E E E E E E E Wind spd 14 16 14 13 13 16 13 13 16 14 13 11 10 12 11 11 12 12 11 10 10 Clouds B2 B2 B1 B1 B1 B1 B2 B1 CL SC FW FW SC SC SC SC SC SC SC SC SC PoP 12hr 50 50 10 20 20 QPF 12hr 0.18 0.10 0.02 0.03 0.02 Rain shwrs C C C C C C C C S S S S S S S S S S S S Heat index 96103103 97 90 87 86 96100102 94 89 87 86 96102102 95 90 Max heat 96 103 102 89 96 102 100 89 96 102 101 Heat Y Y Date Sat 09/13/25 Sun 09/14/25 Mon 09/15/25 Tue 09/16/25 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 91 78 90 78 91 78 91 Temp 80 86 91 82 79 85 90 82 79 86 91 82 79 86 91 82 Dewpt 75 76 76 76 76 76 76 77 77 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 BZ Avg clouds SC SC SC SC SC SC SC SC SC SC SC SC B2 B1 SC SC PoP 12hr 20 20 20 20 30 50 50 30 Rain shwrs S S S S S S S S S C C C C C C C Tstms S S S $$