Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
Versions:
1
2
507 FOCA52 TJSJ 010903 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 503 AM AST Fri Aug 1 2025 PRZ001-012000- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 503 AM AST Fri Aug 1 2025 Date Fri 08/01/25 Sat 08/02/25 Sun 08/03/25 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 87 83 81 80 80 86 89 90 87 83 81 80 80 86 90 91 88 84 Dewpt 76 76 77 77 77 76 76 76 77 76 76 77 76 76 76 75 76 76 76 76 76 RH 75 66 66 72 82 85 88 88 75 66 64 72 80 85 88 85 72 64 62 68 77 Wind dir E E E E E E E E SE SE SE SE SE SE SE SE SE E E E E Wind spd 12 16 16 14 11 11 9 8 5 13 14 9 8 6 6 5 6 13 17 11 9 Clouds SC SC SC B1 B2 B2 B2 OV OV OV B2 B1 B1 B1 B2 B2 SC SC B2 B2 B2 PoP 12hr 50 70 70 50 50 QPF 12hr 0.26 0.70 0.69 0.38 0.77 Rain shwrs S C S C C C L L L L L C C C C C C C C C C Tstms S S S S S S S S S S Heat index 95101103 98 91 88 85 86 97101102 98 90 88 85 85 97102103 98 92 Max heat 95 103 102 89 97 102 101 89 97 103 102 Heat Y Y Date Mon 08/04/25 Tue 08/05/25 Wed 08/06/25 Thu 08/07/25 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 88 79 90 79 90 Temp 81 87 91 83 80 85 88 82 80 86 90 83 80 86 90 83 Dewpt 76 77 76 76 76 75 75 75 75 75 75 75 75 75 75 76 PWind dir E E E E E E E E Wind char GN GN GN GN LT GN LT GN Avg clouds B2 B1 SC SC SC SC SC B1 B2 B2 B1 SC SC SC SC SC PoP 12hr 50 30 30 60 60 40 30 30 Rain shwrs C C C C C C C L L L C S S C C S $$ PRZ002-012000- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 503 AM AST Fri Aug 1 2025 Date Fri 08/01/25 Sat 08/02/25 Sun 08/03/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 91 79 89 79 90 Temp 87 90 91 87 83 81 80 80 85 88 89 86 82 81 80 80 86 89 90 87 83 Dewpt 77 78 78 78 77 77 77 77 77 77 77 77 76 77 76 76 77 77 77 78 77 RH 72 68 66 75 82 88 91 91 77 70 68 75 82 88 88 88 75 68 66 75 82 Wind dir E E E E NE NE NE E E SE SE SE SE SE SE SE SE SE E E E Wind spd 14 16 14 13 11 12 11 9 9 12 11 10 11 11 11 11 11 13 13 12 12 Clouds SC B1 B1 B1 B2 B2 B2 OV OV OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 OV PoP 12hr 50 70 70 60 70 QPF 12hr 0.30 0.71 0.79 0.58 1.06 Rain shwrs C C C C C C L L L L L C L L C C C C L L L Tstms S S S S S S S S S S S Heat index 99105106100 92 89 85 87 96101102 97 90 88 84 86 97102103100 93 Max heat 99 106 105 91 96 102 101 89 97 103 102 Heat Y Y Date Mon 08/04/25 Tue 08/05/25 Wed 08/06/25 Thu 08/07/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 80 90 81 89 79 90 79 89 Temp 81 86 90 84 82 86 89 82 80 86 90 83 80 85 89 83 Dewpt 77 77 78 77 76 76 76 76 76 76 76 76 75 76 76 76 PWind dir E E E E E E E E Wind char GN GN GN GN GN GN GN GN Avg clouds OV B2 B1 SC SC SC SC B1 B2 B2 B1 SC SC SC SC B1 PoP 12hr 70 40 30 60 60 40 30 40 Rain shwrs L L C C C C C L L L C C S C C C $$ PRZ007-012000- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 503 AM AST Fri Aug 1 2025 Date Fri 08/01/25 Sat 08/02/25 Sun 08/03/25 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 78 87 79 90 Temp 84 88 89 86 82 80 79 79 84 86 87 85 82 81 79 80 86 89 90 87 83 Dewpt 72 72 73 73 73 72 72 71 71 72 73 73 73 73 74 74 74 72 73 73 75 RH 67 59 59 65 74 77 79 77 65 63 63 67 74 77 85 82 68 57 58 63 77 Wind dir E E SE E NE NE NE NE E SE SE E E E E E E SE SE E E Wind spd 8 17 17 14 8 5 4 3 4 11 11 11 9 8 9 9 10 12 12 12 9 Wind gust 27 29 25 Clouds B1 CL SC B1 FW FW SC SC SC B2 B2 B1 B2 B2 B2 B2 B1 B1 SC SC B1 PoP 12hr 40 10 70 60 40 QPF 12hr 0.17 0.16 0.51 0.51 0.57 Rain shwrs C S C S S S L L C C C L L C C C C C Tstms S S S Heat index 90 95 97 93 87 84 88 93 94 91 87 85 84 85 94 96 98 94 90 Max heat 90 97 96 86 88 94 94 86 94 98 98 Heat Y Y Date Mon 08/04/25 Tue 08/05/25 Wed 08/06/25 Thu 08/07/25 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 76 89 76 89 77 89 Temp 80 86 91 81 77 84 89 80 77 84 89 81 78 84 89 80 Dewpt 73 73 73 73 71 71 70 72 71 70 72 71 70 69 70 72 PWind dir E E E E NE E E E Wind char GN GN LT GN LT GN LT GN Avg clouds B1 B1 SC SC CL CL FW B1 SC SC FW FW CL FW FW CL PoP 12hr 40 20 0 40 30 10 10 10 Rain shwrs C C S S C C C C S S S S $$ PRZ008-012000- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 503 AM AST Fri Aug 1 2025 Date Fri 08/01/25 Sat 08/02/25 Sun 08/03/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 89 79 88 77 88 Temp 84 88 89 86 82 81 80 80 85 87 88 85 81 79 78 78 84 87 88 85 81 Dewpt 74 76 77 76 76 77 77 77 76 76 76 75 75 76 76 75 75 76 76 75 76 RH 72 68 68 72 82 88 91 91 75 70 68 72 82 91 94 91 74 70 68 72 85 Wind dir E E E E E E E E E E NE NE SE SE SE SE E E NE NE E Wind spd 12 12 21 20 21 14 13 13 14 11 4 5 4 4 5 4 6 6 9 6 10 Clouds CL CL SC B2 FW CL SC SC SC B2 OV OV SC SC SC SC SC SC B2 B2 SC PoP 12hr 50 30 70 20 60 QPF 12hr 0.31 0.26 1.25 0.07 1.34 Rain shwrs S C S C S L L L S S S S S S L L S Tstms S S S S S Heat index 91 99102 96 90 88 85 85 94 98 99 93 86 83 92 98 99 93 88 Max heat 91 102 101 89 94 99 98 85 92 99 97 Heat Y Y Date Mon 08/04/25 Tue 08/05/25 Wed 08/06/25 Thu 08/07/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 78 89 76 88 77 88 76 89 Temp 79 85 89 80 77 83 88 81 78 84 88 80 77 84 89 81 Dewpt 76 75 76 76 76 75 76 75 76 75 75 75 76 74 76 75 PWind dir E E E E E E E E Wind char GN GN GN BZ GN GN LT GN Avg clouds SC FW SC B1 SC FW FW SC SC SC B1 B2 SC FW FW SC PoP 12hr 10 60 5 30 30 70 10 40 Rain shwrs S S L L S S S C C C L L S S C C Tstms S S S S $$ PRZ010-012000- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 503 AM AST Fri Aug 1 2025 Date Fri 08/01/25 Sat 08/02/25 Sun 08/03/25 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 90 76 92 Temp 86 92 93 88 82 79 77 77 85 89 90 86 81 79 77 78 86 91 92 87 82 Dewpt 76 78 79 78 77 76 75 74 77 79 79 77 76 76 75 75 76 79 78 77 76 RH 72 64 64 72 85 91 94 90 77 73 70 75 85 91 94 91 72 68 64 72 82 Wind dir NE E NE E NE NE NE E E S E SE E SE SE E SE SE SE E E Wind spd 4 2 5 3 5 8 10 8 8 5 8 6 5 6 9 8 5 5 3 4 4 Clouds CL CL B2 OV FW CL CL CL FW B2 OV OV SC SC SC SC SC SC B2 B2 SC PoP 12hr 80 5 80 20 60 QPF 12hr 1.08 0.05 1.30 0.13 1.07 Rain shwrs C D S L L D S S S S S S L L S Tstms S S S S S S S Heat index 96107110101 89 84 95105106 97 87 96108107 99 89 Max heat 96 110 109 88 95 106 104 85 96 108 106 Heat Y Y Date Mon 08/04/25 Tue 08/05/25 Wed 08/06/25 Thu 08/07/25 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 93 74 92 75 93 74 94 Temp 78 87 93 80 75 85 92 81 76 86 93 80 75 86 94 81 Dewpt 75 77 79 78 75 76 79 76 75 76 78 76 75 75 78 76 PWind dir E E E E E E E E Wind char LT LT LT LT GN LT LT LT Avg clouds SC SC SC B1 SC FW FW B1 SC SC SC B2 SC FW FW SC PoP 12hr 20 60 10 40 20 70 10 30 Rain shwrs S S L L S S C C S S L L S S C C Tstms S S S S $$ VIZ001-012000- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 503 AM AST Fri Aug 1 2025 Date Fri 08/01/25 Sat 08/02/25 Sun 08/03/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 91 80 89 81 89 Temp 87 90 91 88 84 82 81 81 86 88 89 87 84 83 81 82 86 89 89 87 84 Dewpt 78 78 78 78 77 78 78 77 78 78 78 78 77 78 78 77 78 78 78 78 78 RH 75 68 66 72 80 88 91 88 77 72 70 75 80 85 91 85 77 70 70 75 82 Wind dir E E E E NE NE E E E SE SE SE SE SE SE SE E E E E E Wind spd 20 20 19 18 19 20 18 14 17 19 17 18 17 17 17 17 17 18 18 17 18 Clouds SC B1 FW B1 B2 B2 B2 B2 OV OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 50 70 70 50 60 QPF 12hr 0.19 0.67 0.45 0.53 1.13 Rain shwrs S C C C C L L L L C C C C C C C C L L C Tstms S S S S S S S S S S S Heat index 100105106101 93 91 89 88 98102103 99 93 92 90 90 98102103 99 94 Max heat 100 106 105 92 98 103 102 92 98 103 102 Date Mon 08/04/25 Tue 08/05/25 Wed 08/06/25 Thu 08/07/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 81 90 81 90 80 90 80 90 Temp 81 87 90 84 82 87 90 83 81 86 90 83 81 86 90 83 Dewpt 78 78 78 77 77 77 76 76 76 76 77 76 76 76 76 76 PWind dir E E E E E E E E Wind char BZ BZ BZ GN GN BZ BZ GN Avg clouds B2 B1 SC SC SC SC SC B1 B2 B1 B1 SC SC SC SC SC PoP 12hr 50 40 30 50 50 40 10 40 Rain shwrs C C C C C C C C C C C C S S S C $$ VIZ002-012000- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 503 AM AST Fri Aug 1 2025 Date Fri 08/01/25 Sat 08/02/25 Sun 08/03/25 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 79 91 Temp 86 89 90 87 83 82 81 81 86 89 90 87 83 81 80 80 86 90 91 88 84 Dewpt 77 77 77 77 77 77 77 77 77 77 77 77 76 77 76 76 77 77 77 77 76 RH 75 68 66 72 82 85 88 88 75 68 66 72 80 88 88 88 75 66 64 70 77 Wind dir E E E E NE NE E E SE SE SE SE SE E E E E E E E E Wind spd 19 20 18 16 14 16 12 11 16 17 16 14 13 13 13 13 16 17 17 17 16 Clouds SC SC FW SC B2 B2 B2 B2 SC SC B1 B1 B2 B2 B1 B1 B1 B1 B2 B2 B2 PoP 12hr 50 60 50 50 60 QPF 12hr 0.15 0.54 0.25 0.45 1.03 Rain shwrs S C C C C C L C C C C C C C C C C L L C Tstms S S S S S S Heat index 97102103 99 93 90 88 88 97102103 98 90 88 85 86 98104105100 93 Max heat 97 103 102 91 97 103 101 89 98 105 102 Date Mon 08/04/25 Tue 08/05/25 Wed 08/06/25 Thu 08/07/25 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 78 91 78 90 79 90 Temp 82 87 91 82 79 86 91 82 79 85 90 83 80 86 90 82 Dewpt 77 77 77 76 76 75 75 75 75 76 76 76 75 75 76 76 PWind dir E E E E E E E E Wind char BZ BZ BZ GN GN GN GN BZ Avg clouds B2 B1 SC SC SC SC SC B1 B2 B1 B1 SC SC SC SC SC PoP 12hr 50 40 30 50 50 40 10 30 Rain shwrs C C C C C C C C C C C C S S S C $$