Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
Versions:
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216 FOCA52 TJSJ 290903 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 503 AM AST Fri Aug 29 2025 PRZ001-292000- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 503 AM AST Fri Aug 29 2025 Date Fri 08/29/25 Sat 08/30/25 Sun 08/31/25 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 79 92 Temp 86 89 90 87 83 82 81 81 87 90 91 87 83 81 80 80 87 91 92 88 83 Dewpt 76 77 77 76 76 77 76 76 76 76 76 75 75 75 75 74 75 76 76 75 76 RH 72 68 66 70 80 85 85 85 70 64 62 68 77 82 85 82 68 62 60 66 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 5 10 12 11 8 6 6 6 8 12 14 12 9 8 5 8 8 12 13 12 9 Clouds SC SC B2 B2 SC B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 50 40 30 30 20 QPF 12hr 0.59 0.17 0.14 0.10 0.09 Rain shwrs C C C C S C S S C C S S S S C C S S S S S Tstms S Heat index 96102103 98 92 90 86 87 97102103 97 90 87 84 85 97103105 98 91 Max heat 96 103 102 91 97 103 102 89 97 105 103 Date Mon 09/01/25 Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 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 79 92 79 92 79 92 Temp 80 87 92 83 80 87 92 83 80 87 92 83 80 87 92 83 Dewpt 76 75 76 76 76 76 76 76 75 75 76 75 75 75 75 75 PWind dir E E SE E SE E E E Wind char LT GN LT GN LT GN LT GN Avg clouds SC SC B1 SC SC SC B1 B1 SC B1 SC SC SC SC SC SC PoP 12hr 30 40 40 50 40 40 30 30 Rain shwrs S C C C S C C C C C C S S C C S Tstms S S S S $$ PRZ002-292000- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 503 AM AST Fri Aug 29 2025 Date Fri 08/29/25 Sat 08/30/25 Sun 08/31/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 90 80 90 80 90 Temp 87 89 90 87 83 82 81 81 86 89 90 87 83 82 81 81 86 89 90 87 83 Dewpt 78 79 78 78 78 77 77 76 77 77 77 77 76 77 76 76 77 77 76 77 76 RH 75 73 68 75 85 85 88 85 75 68 66 72 80 85 85 85 75 68 64 72 80 Wind dir E E E E E E E E E E E E E E E E E E E E E Wind spd 8 10 10 9 9 9 8 8 9 11 10 9 9 9 6 9 9 11 10 9 8 Clouds B1 SC B2 SC B1 B1 B1 B1 B1 B1 SC SC SC SC B1 B1 B1 B1 SC SC SC PoP 12hr 50 40 40 40 40 QPF 12hr 0.42 0.30 0.16 0.15 0.13 Rain shwrs C C C S C C C C C C S S C C C C C C S S C Heat index 99105104100 93 90 87 87 97103103 99 92 90 87 87 97102102 98 91 Max heat 99 105 104 92 97 103 102 91 97 102 101 Date Mon 09/01/25 Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 80 91 80 90 80 90 78 90 Temp 81 86 91 83 81 86 90 83 81 86 90 82 79 85 90 82 Dewpt 76 77 77 77 76 77 77 76 77 77 77 76 76 77 77 75 PWind dir E E E E E E E E Wind char GN GN GN GN GN GN GN GN Avg clouds SC B1 B1 B1 SC SC B1 SC B2 B2 B1 SC SC SC SC SC PoP 12hr 50 50 50 50 50 50 30 30 Rain shwrs C C C C S C C C C C C S S C C C Tstms S S $$ PRZ007-292000- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 503 AM AST Fri Aug 29 2025 Date Fri 08/29/25 Sat 08/30/25 Sun 08/31/25 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 90 77 90 Temp 85 89 90 86 81 79 77 77 85 89 90 86 81 79 78 78 85 89 90 86 81 Dewpt 73 74 75 75 75 74 73 72 73 73 74 75 74 73 72 71 72 73 73 72 73 RH 67 61 62 70 82 85 87 85 67 59 60 70 79 82 82 79 65 59 58 63 77 Wind dir E SE SE E E NE NE NE E SE SE E E NE NE NE NE E SE E E Wind spd 3 9 8 6 5 4 3 3 3 12 12 8 4 3 4 4 3 12 11 9 4 Clouds SC SC SC SC SC CL SC FW SC FW SC SC CL CL FW FW SC SC SC SC SC PoP 12hr 20 10 20 5 20 QPF 12hr 0.24 0.03 0.15 0.01 0.12 Rain shwrs S S S S S S S S S S S S S S Heat index 92 98100 95 86 91 97 99 95 87 83 91 97 98 92 86 Max heat 92 100 100 84 91 99 99 85 91 98 97 Date Mon 09/01/25 Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 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 77 90 77 90 77 90 Temp 78 85 90 81 78 85 90 81 78 85 90 81 78 85 90 81 Dewpt 72 73 74 74 73 73 74 73 73 72 73 73 72 71 74 73 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 FW FW FW SC SC SC SC SC SC FW FW SC PoP 12hr 20 20 5 10 20 20 10 20 Rain shwrs S S S S S S S S S S S S S S $$ PRZ008-292000- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 503 AM AST Fri Aug 29 2025 Date Fri 08/29/25 Sat 08/30/25 Sun 08/31/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 87 76 88 77 88 Temp 83 86 87 84 80 78 77 77 83 87 88 85 81 79 78 78 84 87 88 84 80 Dewpt 75 76 77 75 75 76 76 75 76 76 77 75 75 76 75 74 75 75 76 75 76 RH 77 72 72 74 85 94 97 94 80 70 70 72 82 91 91 88 74 68 68 74 88 Wind dir E NE E E E E E E E E NE E E E E E E E NE NE E Wind spd 1 5 9 6 6 5 5 9 10 6 5 10 12 11 10 11 10 8 5 8 11 Clouds SC FW B2 OV FW SC FW CL CL CL B1 B2 SC SC FW FW FW FW SC SC SC PoP 12hr 70 5 50 10 30 QPF 12hr 1.52 0.03 0.55 0.01 0.43 Rain shwrs S S L L S S C C S S S S C C S Tstms S S S S Heat index 90 97 98 92 84 92 98100 92 86 83 91 97 99 92 84 Max heat 90 98 97 92 100 98 85 91 99 98 Date Mon 09/01/25 Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 76 88 77 88 77 88 77 88 Temp 77 83 88 80 78 83 88 80 78 83 88 80 78 83 88 80 Dewpt 76 75 77 76 75 75 77 76 76 75 76 75 76 75 77 75 PWind dir E E E E E E E E Wind char GN LT LT LT LT LT LT GN Avg clouds SC FW SC B1 CL FW SC B1 SC FW SC SC SC SC SC B1 PoP 12hr 10 60 5 60 10 40 10 50 Rain shwrs S S L L S L L S S C C S S C C Tstms S S S S S S S S $$ PRZ010-292000- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 503 AM AST Fri Aug 29 2025 Date Fri 08/29/25 Sat 08/30/25 Sun 08/31/25 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 77 92 75 92 Temp 87 92 93 88 82 80 78 79 86 91 92 87 81 78 76 77 86 91 92 87 80 Dewpt 76 78 78 77 77 77 76 75 76 77 79 78 77 77 75 74 76 77 78 77 77 RH 70 64 62 70 85 91 94 88 72 64 66 75 88 97 97 90 72 64 64 72 91 Wind dir E W NE NE E E E E E SE W NE E E E E E E NW NE E Wind spd 3 4 5 5 4 3 3 4 3 2 3 4 6 3 5 5 4 2 3 5 5 Clouds SC FW B2 B2 FW CL FW CL CL CL B2 OV FW FW CL CL FW FW B2 B2 SC PoP 12hr 60 5 70 5 60 QPF 12hr 0.71 0.02 1.10 0.01 1.01 Rain shwrs S L L L L L L S Tstms S S S S S S Heat index 97107109100 90 87 97105109100 88 95105107 98 87 Max heat 97 109 107 89 97 109 107 85 95 107 106 Date Mon 09/01/25 Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 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 74 93 Temp 76 85 93 80 76 85 93 80 76 85 93 80 75 85 93 80 Dewpt 76 76 78 77 76 76 79 77 75 76 78 77 75 77 79 76 PWind dir E E E E E E E E Wind char LT LT LT LT LT LT LT LT Avg clouds SC FW SC B1 CL FW SC B1 FW FW SC B1 SC FW SC B1 PoP 12hr 10 60 5 60 5 50 10 50 Rain shwrs S S L L L L C C S S C C Tstms S S S S S S S S $$ VIZ001-292000- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 503 AM AST Fri Aug 29 2025 Date Fri 08/29/25 Sat 08/30/25 Sun 08/31/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 90 81 91 81 92 Temp 86 89 90 87 84 83 82 82 87 90 91 88 84 83 82 82 88 91 92 89 85 Dewpt 78 78 77 77 78 77 77 76 77 77 76 76 76 77 76 76 77 76 77 76 76 RH 77 70 66 72 82 82 85 82 72 66 62 68 77 82 82 82 70 62 62 66 75 Wind dir E E E E E E E E E E E E E E E E E E E E E Wind spd 12 12 11 12 13 16 13 14 13 13 11 12 13 13 12 13 13 13 12 11 12 Clouds SC SC SC SC SC SC SC B2 SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 20 50 30 30 20 QPF 12hr 0.14 0.24 0.18 0.09 0.06 Rain shwrs S S S S S C C C C S S S S S C C S S S S S Heat index 99103103 99 95 92 89 89 99103103 99 93 92 89 90100104105101 95 Max heat 99 103 102 93 99 103 103 93 100 105 104 Heat Y Y Date Mon 09/01/25 Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 82 92 82 92 82 92 82 92 Temp 83 88 92 85 83 88 92 85 83 88 92 85 83 88 92 85 Dewpt 77 77 77 77 77 77 77 77 77 77 77 77 77 77 76 76 PWind dir E E E E E E E E Wind char GN GN GN GN GN GN GN BZ Avg clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 40 40 20 10 20 20 20 20 Rain shwrs S C C S S S S S S S S S S S S S $$ VIZ002-292000- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 503 AM AST Fri Aug 29 2025 Date Fri 08/29/25 Sat 08/30/25 Sun 08/31/25 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 86 89 90 87 84 83 82 82 87 89 90 87 83 81 80 80 86 89 90 87 82 Dewpt 78 77 77 77 77 77 77 76 77 77 77 76 76 76 76 76 77 76 76 76 76 RH 77 68 66 72 80 82 85 82 72 68 66 70 80 85 88 88 75 66 64 70 82 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 12 12 11 13 13 12 12 13 11 12 11 12 12 12 13 12 12 10 10 Clouds SC SC SC SC SC SC SC B2 SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 20 50 30 30 30 QPF 12hr 0.19 0.23 0.18 0.08 0.11 Rain shwrs S S S S S C S C C S S S S S S S C C S S C Heat index 98102103 99 93 92 89 89 97102102 97 90 87 84 85 96101102 97 90 Max heat 98 103 103 93 97 103 102 89 96 102 101 Heat Y Y Date Mon 09/01/25 Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 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 91 79 91 79 91 Temp 80 86 91 82 79 86 91 83 80 86 91 83 80 86 91 83 Dewpt 76 77 77 76 76 76 77 76 76 77 77 76 76 76 75 75 PWind dir E E E E E E E E Wind char GN GN GN GN GN GN GN GN Avg clouds SC B1 SC SC SC SC SC SC SC FW FW SC SC SC SC SC PoP 12hr 40 40 30 10 10 20 20 30 Rain shwrs C C C C C C S S S S S S S S S C $$