Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
Versions:
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154 FOCA52 TJSJ 150632 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 232 AM AST Tue Sep 15 2026 PRZ001-152000- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 232 AM AST Tue Sep 15 2026 Date Tue 09/15/26 Wed 09/16/26 Thu 09/17/26 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 79 86 90 91 86 83 82 81 80 87 91 92 86 83 81 80 79 87 91 92 87 84 Dewpt 75 75 76 76 76 76 75 75 75 75 76 77 77 77 77 76 76 77 77 77 77 77 RH 88 70 64 62 72 80 79 82 85 68 62 62 75 82 88 88 91 72 64 62 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 E Wind spd 9 11 13 16 12 10 10 10 9 10 14 14 12 9 10 11 9 11 17 17 12 10 Clouds B2 B2 SC B2 B2 B1 B2 B1 SC B1 B2 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 PoP 12hr 50 50 50 50 60 QPF 12hr 0.14 0.19 0.36 0.36 0.34 Rain shwrs C C C C C C C C S C C C C C C C C C C C C L Tstms S S S S S Heat index 83 95101103 96 91 88 86 85 96103105 98 91 88 85 84 98105106 99 93 Max heat 95 103 102 90 96 105 104 90 98 106 105 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 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 93 79 91 79 91 78 91 Temp 81 88 93 83 80 86 91 83 80 86 91 82 79 86 91 83 Dewpt 76 76 76 76 75 75 76 75 75 75 76 75 75 75 76 76 PWind dir E E E E SE SE SE SE Wind char GN GN LT GN LT GN LT GN Avg clouds B2 B1 SC SC SC SC B1 B1 SC SC SC B1 SC SC B1 SC PoP 12hr 60 30 30 40 30 40 30 40 Rain shwrs L L C C S C C C C C C C C C C C Tstms S S $$ PRZ002-152000- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 232 AM AST Tue Sep 15 2026 Date Tue 09/15/26 Wed 09/16/26 Thu 09/17/26 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 90 81 91 81 90 Temp 81 86 89 90 86 84 82 81 81 87 90 91 87 84 83 82 81 86 89 90 86 84 Dewpt 75 75 76 76 77 75 76 75 75 76 77 77 78 77 77 77 77 77 78 77 78 76 RH 82 70 66 64 75 74 82 82 82 70 66 64 75 80 82 85 88 75 70 66 77 77 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 10 12 13 12 11 10 11 12 11 12 13 11 12 10 12 11 12 16 16 14 13 12 Clouds B1 B2 B2 B2 B2 B1 B2 B1 SC B1 B2 B1 B1 OV OV OV OV B2 B2 B2 B2 B2 PoP 12hr 50 50 70 70 60 QPF 12hr 0.27 0.19 0.39 0.57 0.41 Rain shwrs C C C C C C C C S C C C C L L L L L L L L L Tstms S S S S S S S S S S S S S Heat index 87 96101101 97 92 90 88 87 97103104 99 93 91 89 88 98103103 98 93 Max heat 96 101 101 91 97 104 104 92 98 103 102 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 81 90 81 90 80 90 80 90 Temp 81 86 90 84 81 86 90 83 81 86 90 83 81 86 90 84 Dewpt 76 77 76 75 75 76 76 75 75 75 75 75 75 76 76 75 PWind dir E E E E E SE SE SE Wind char GN GN GN GN LT GN LT GN Avg clouds B2 B1 SC SC SC B1 B1 B1 B1 B1 B1 B1 B2 B1 B1 SC PoP 12hr 60 30 40 40 40 50 50 40 Rain shwrs L L S C C C C C C C C C C C C C Tstms S S $$ PRZ007-152000- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 232 AM AST Tue Sep 15 2026 Date Tue 09/15/26 Wed 09/16/26 Thu 09/17/26 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 77 92 78 90 Temp 77 85 90 91 85 81 79 78 77 86 91 92 86 82 80 79 78 85 89 90 85 82 Dewpt 72 71 70 73 73 73 72 72 71 71 72 73 73 74 73 73 72 74 74 73 74 74 RH 85 63 52 56 67 77 79 82 82 61 54 54 65 77 79 82 82 70 61 58 70 77 Wind dir NE E E SE E E NE NE NE E E E E E E E E E E E E E Wind spd 4 4 16 18 12 8 6 5 5 6 14 17 13 9 8 5 5 6 14 12 11 8 Wind gust 27 29 25 29 25 Clouds CL FW FW B1 B1 CL FW CL FW FW SC FW FW FW FW SC SC SC SC B2 B2 B2 PoP 12hr 40 5 5 20 50 QPF 12hr 0.07 0 0.02 0.09 0.26 Rain shwrs C C S S S S S S S C C C Heat index 90 95 99 91 86 83 91 98101 93 88 85 93 98 98 93 87 Max heat 90 99 99 85 91 101 100 87 93 98 97 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 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 91 77 90 76 89 76 90 Temp 79 86 91 81 78 85 90 80 77 84 89 80 77 84 90 81 Dewpt 74 73 72 74 73 72 74 74 73 73 73 74 73 72 74 74 PWind dir E E E E E E E E Wind char LT GN LT GN LT GN LT GN Avg clouds B2 B1 SC FW CL FW SC SC FW FW SC SC FW FW SC SC PoP 12hr 50 10 5 40 5 40 10 30 Rain shwrs C C S S S C C S C C S C C $$ PRZ008-152000- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 232 AM AST Tue Sep 15 2026 Date Tue 09/15/26 Wed 09/16/26 Thu 09/17/26 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 88 77 89 77 89 Temp 77 83 87 88 83 80 79 78 77 84 88 89 84 81 79 78 77 84 88 89 84 81 Dewpt 74 76 77 76 77 77 76 74 74 76 77 77 78 78 77 76 75 77 79 78 78 78 RH 90 80 72 68 82 91 91 88 90 77 70 68 82 91 94 94 94 80 75 70 82 91 Wind dir E E E E E E E E E E E NE E E E E E E E E E E Wind spd 13 13 14 16 12 18 13 14 12 12 14 14 14 19 13 11 10 9 5 5 8 9 Clouds SC CL CL B2 B2 SC SC FW CL CL CL B2 B2 FW FW FW FW FW FW OV OV SC PoP 12hr 60 30 50 5 70 QPF 12hr 0.99 0.05 0.28 0.02 1.29 Rain shwrs C C L C C C C L L C Tstms S S S Heat index 92 99 99 93 87 93100101 95 88 94103103 95 88 Max heat 92 100 99 85 93 101 101 86 94 105 102 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 77 89 77 88 77 88 77 88 Temp 78 84 89 81 78 83 88 80 78 83 88 80 78 83 88 80 Dewpt 75 77 78 78 75 76 76 76 74 76 76 76 74 76 76 77 PWind dir E E E E E NE E E Wind char GN GN GN LT LT LT GN GN Avg clouds SC SC SC B2 SC SC SC B1 SC SC SC B1 B1 SC SC B1 PoP 12hr 30 60 30 50 30 50 40 50 Rain shwrs C C L L C C C C C C C C C C C C Tstms S S $$ PRZ010-152000- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 232 AM AST Tue Sep 15 2026 Date Tue 09/15/26 Wed 09/16/26 Thu 09/17/26 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 92 75 94 76 94 Temp 76 85 90 92 85 80 78 76 76 86 92 94 86 81 79 77 77 86 92 94 86 81 Dewpt 73 76 78 77 78 77 76 75 74 76 77 77 78 77 77 75 75 77 80 80 79 78 RH 90 75 68 62 80 91 94 97 94 72 62 58 77 88 94 94 94 75 68 64 80 91 Wind dir NE NE E SW NE NE E NE E E E E NE E E E E E SE E E E Wind spd 8 5 4 5 4 4 5 5 5 3 2 2 5 9 5 4 4 2 3 4 1 4 Clouds CL FW CL OV OV SC CL CL CL CL SC OV OV FW FW FW FW FW FW OV OV SC PoP 12hr 70 10 70 5 70 QPF 12hr 1.23 0.01 0.68 0.01 0.79 Rain shwrs L L S S L L L L S Tstms S S S S S S Heat index 94105105 96 87 96107107 99 89 98111111100 90 Max heat 94 106 105 83 96 107 107 87 98 111 110 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 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 94 75 94 75 93 75 94 Temp 77 86 94 81 76 86 94 81 76 85 93 80 76 86 94 81 Dewpt 75 77 78 77 75 76 78 76 75 76 78 76 74 76 78 77 PWind dir E E E S E SE E E Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC B1 B2 SC FW SC B2 SC SC SC B1 SC SC SC B1 PoP 12hr 20 70 10 60 30 50 30 40 Rain shwrs S S L L S S L L C C C C C C C C Tstms S S S S $$ VIZ001-152000- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 232 AM AST Tue Sep 15 2026 Date Tue 09/15/26 Wed 09/16/26 Thu 09/17/26 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 89 82 89 82 91 Temp 82 86 88 89 86 84 83 82 82 86 88 89 86 84 83 82 82 87 90 91 87 85 Dewpt 74 74 73 73 74 74 75 74 73 74 75 74 75 75 76 76 76 75 76 74 75 75 RH 77 68 61 59 68 72 77 77 74 68 66 61 70 74 80 82 82 68 64 58 68 72 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 17 18 17 17 16 17 18 16 18 17 17 16 17 18 17 18 19 19 20 20 18 18 Clouds SC SC B1 SC SC SC SC CL SC SC B1 B1 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 40 30 60 60 60 QPF 12hr 0.25 0.10 0.20 0.50 0.40 Rain shwrs S C C S C S S C C C C C L L L L L L L L C Tstms S S S S S S S S S Heat index 88 94 96 97 94 91 90 89 88 94 98 98 95 92 91 90 89 97102101 96 93 Max heat 94 97 97 91 94 98 98 92 97 102 99 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 82 91 82 88 81 88 81 89 Temp 82 87 91 85 82 85 88 83 81 85 88 83 81 86 89 84 Dewpt 75 75 73 74 74 74 72 73 73 73 72 73 74 74 73 73 PWind dir E E E E E SE SE E Wind char BZ GN GN GN GN GN GN BZ Avg clouds B2 B1 SC SC SC B1 B1 SC SC B1 B1 B1 B1 B1 B1 B1 PoP 12hr 50 30 40 40 40 40 40 40 Rain shwrs C C C C C C C C C C C C C C C C $$ VIZ002-152000- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 232 AM AST Tue Sep 15 2026 Date Tue 09/15/26 Wed 09/16/26 Thu 09/17/26 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 88 81 89 81 88 Temp 80 85 87 88 85 83 82 81 81 86 88 89 86 83 82 81 81 85 87 88 85 84 Dewpt 76 76 76 76 76 76 76 76 76 77 77 78 77 77 78 78 77 78 78 78 77 77 RH 88 75 70 68 75 80 82 85 85 75 70 70 75 82 88 91 88 80 75 72 77 80 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 16 17 17 17 14 16 16 14 16 16 18 16 17 18 16 14 16 17 19 19 17 16 Clouds SC SC SC SC SC B2 SC CL SC B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B2 B2 SC PoP 12hr 50 50 60 60 60 QPF 12hr 0.08 0.13 0.20 0.50 0.39 Rain shwrs S S C S S C S C C C C C L L L L L L L L C Tstms S S S S S S S S Heat index 86 93 98 99 94 91 89 88 88 96101102 96 93 91 90 89 96100102 96 93 Max heat 93 99 98 90 96 102 102 92 96 102 100 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 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 89 81 89 81 89 81 90 Temp 82 86 89 83 81 86 89 83 81 86 89 83 81 86 90 83 Dewpt 77 77 77 76 76 76 76 75 76 76 75 75 76 76 76 76 PWind dir E E E E E SE E E Wind char GN GN GN GN GN GN GN GN Avg clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 30 20 20 20 30 30 20 30 Rain shwrs C C S S S S S S S C C C S S S C $$