Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
Versions:
1
2
436 FOCA52 TJSJ 151832 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 232 PM AST Tue Sep 15 2026 PRZ001-160800- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 232 PM AST Tue Sep 15 2026 Date 09/15/26 Wed 09/16/26 Thu 09/17/26 Fri AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 80 91 79 89 80 Temp 86 83 82 81 80 86 90 91 86 83 81 80 79 85 88 89 85 83 81 80 80 87 Dewpt 75 75 75 74 74 75 76 77 77 76 77 76 76 77 76 76 77 77 77 76 76 76 RH 70 77 79 79 82 70 64 64 75 80 88 88 91 77 68 66 77 82 88 88 88 70 Wind dir E E E E E E E E E E E SE E E SE E E E SE E E E Wind spd 12 11 11 10 9 11 14 14 12 11 11 10 9 11 16 16 13 12 9 9 9 11 Clouds B2 B1 B2 B1 SC B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 SC PoP 12hr 50 50 60 60 60 QPF 12hr 0.19 0.45 0.34 0.49 0.19 Rain shwrs C C C C S C C C C C C C C L L L L L L L L C Tstms S S S S S S S S S S S S S S S Heat index 95 90 89 86 84 96102104 97 90 88 86 96 99101 96 92 88 86 86 97 Max heat 101 89 96 105 104 89 96 101 99 90 97 Date 09/18 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 92 79 91 79 91 78 91 79 91 Temp 92 83 80 86 91 83 80 86 91 82 79 86 91 83 80 86 91 83 Dewpt 76 76 75 75 76 75 75 75 76 75 75 75 76 76 75 75 70 74 PWind dir E E E SE E SE E SE E Wind char GN LT GN LT GN LT GN GN GN Avg clouds SC SC FW FW SC SC SC SC SC SC SC SC SC B1 SC SC SC B1 PoP 12hr 30 10 40 20 50 20 40 20 40 Rain shwrs C C S S C C S S C C S S C C S S C C $$ PRZ002-160800- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 232 PM AST Tue Sep 15 2026 Date 09/15/26 Wed 09/16/26 Thu 09/17/26 Fri AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 81 89 81 88 82 Temp 86 83 82 81 81 86 88 89 86 83 82 81 81 85 87 88 85 84 83 82 82 87 Dewpt 76 75 75 75 75 76 77 77 77 76 77 77 77 77 76 76 78 76 77 76 76 77 RH 72 77 79 82 82 72 70 68 75 80 85 88 88 77 70 68 80 77 82 82 82 72 Wind dir E E E E E E E E E E SE E E E SE SE E E E E E E Wind spd 11 11 12 12 11 12 13 12 12 12 13 14 14 16 14 13 13 14 12 11 11 11 Clouds B2 B1 B2 B1 SC B1 B2 B2 B2 OV OV OV OV OV OV OV OV B2 B2 B2 B2 B2 PoP 12hr 50 70 80 80 60 QPF 12hr 0.19 0.51 0.64 0.82 0.22 Rain shwrs C C C C S C C C L L L L L D D D D L L L L L Tstms S S S S S S S S S S S S S S S Heat index 95 90 89 87 87 96101102 97 92 90 88 88 96 98 99 97 93 92 89 89 98 Max heat 101 90 96 103 103 92 96 99 100 92 98 Date 09/18 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 91 81 90 80 90 80 90 81 90 Temp 91 84 81 86 90 83 81 86 90 83 81 86 90 84 81 86 90 84 Dewpt 76 76 75 76 76 75 75 75 75 75 75 76 76 75 75 76 73 75 PWind dir E E E E SE E E E E Wind char GN GN GN LT GN LT GN GN GN Avg clouds B1 SC FW SC SC SC SC SC SC SC SC SC B1 B1 SC SC SC SC PoP 12hr 60 30 40 40 50 50 40 30 30 Rain shwrs L S S C C C C C C C C C C C C C C C $$ PRZ007-160800- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 232 PM AST Tue Sep 15 2026 Date 09/15/26 Wed 09/16/26 Thu 09/17/26 Fri AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 78 91 77 88 78 Temp 85 82 80 79 78 86 90 91 85 81 79 78 77 83 87 88 84 81 80 79 78 86 Dewpt 77 76 74 73 72 74 77 77 78 77 76 75 75 77 78 77 78 74 74 74 74 73 RH 77 82 82 82 82 68 66 64 80 88 91 91 94 82 75 70 82 79 82 85 88 65 Wind dir E E NE NE NE E E E E E E E E E E SE E E E E E E Wind spd 11 8 5 5 5 5 13 17 12 8 5 6 9 11 13 13 13 10 8 6 5 9 Wind gust 28 24 24 Clouds B1 CL FW CL FW FW SC SC SC SC SC SC SC SC SC B2 B2 B2 B2 B2 B2 SC PoP 12hr 5 20 20 50 50 QPF 12hr 0 0.12 0.08 0.28 0.13 Rain shwrs C S S S S S S S S S C C C C C C S Tstms S S Heat index 95 89 84 93103104 97 89 92100101 95 86 84 92 Max heat 102 87 93 105 105 86 92 102 99 84 92 Date 09/18 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 91 77 90 76 89 76 90 77 90 Temp 91 81 78 85 90 80 77 84 89 80 77 84 90 81 78 85 90 81 Dewpt 73 75 73 72 74 74 73 73 73 74 73 72 74 74 73 72 70 72 PWind dir E E E E E E E E E Wind char GN LT GN LT LT LT GN LT GN Avg clouds SC FW CL CL FW SC CL FW SC SC CL FW SC SC CL CL FW SC PoP 12hr 20 0 50 5 40 20 30 0 30 Rain shwrs S S C C S C C S C C C C $$ PRZ008-160800- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 232 PM AST Tue Sep 15 2026 Date 09/15/26 Wed 09/16/26 Thu 09/17/26 Fri AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 78 88 76 87 77 Temp 83 81 79 78 78 84 87 88 83 80 78 77 76 82 86 87 83 80 79 78 77 84 Dewpt 77 77 76 75 74 76 77 77 78 78 77 75 75 77 78 77 79 78 77 75 75 77 RH 82 88 91 91 88 77 72 70 85 94 97 94 97 85 77 72 88 94 94 91 94 80 Wind dir E E E E E E E E E E E E E E E NE E E E E E E Wind spd 17 17 16 14 11 12 14 19 17 19 13 10 9 8 8 14 10 5 9 9 11 11 Clouds B2 SC SC FW CL CL CL B1 B2 FW FW FW FW FW FW OV OV SC SC SC SC FW PoP 12hr 30 50 5 80 30 QPF 12hr 0.05 0.71 0.01 1.70 0.07 Rain shwrs L C C C C D D C C C C S Tstms S S S S S Heat index 92 88 93 99100 93 85 90 99 99 94 87 93 Max heat 99 87 93 100 102 90 100 98 93 Date 09/18 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 89 77 88 77 88 77 88 76 88 Temp 89 81 78 83 88 80 78 83 88 80 78 83 88 80 77 83 88 80 Dewpt 78 78 75 76 76 76 74 76 76 76 74 76 76 77 74 76 74 74 PWind dir E E E E E E E E E Wind char GN GN GN LT LT LT LT LT GN Avg clouds SC B1 CL CL SC B2 SC SC SC B2 SC SC SC SC CL CL SC B1 PoP 12hr 60 0 60 30 60 30 50 0 50 Rain shwrs L L L L C C L L C C C C C C Tstms S S S S S S $$ PRZ010-160800- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 232 PM AST Tue Sep 15 2026 Date 09/15/26 Wed 09/16/26 Thu 09/17/26 Fri AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 75 91 76 89 76 Temp 84 80 78 76 76 84 90 91 85 81 79 77 76 84 88 89 83 80 78 77 77 85 Dewpt 78 77 76 74 73 76 77 77 78 77 77 75 75 77 79 79 79 78 77 75 75 77 RH 82 91 94 94 90 77 66 64 80 88 94 94 97 80 75 73 88 94 97 94 94 77 Wind dir E NE NE E E NE E E NE E NE NE E E SE SE SE E E E E E Wind spd 5 6 6 5 3 4 4 4 3 8 3 2 4 5 6 4 2 6 6 4 5 4 Clouds OV SC CL CL CL CL SC B2 OV FW FW FW FW FW FW OV OV SC SC SC SC SC PoP 12hr 10 80 5 70 20 QPF 12hr 0.01 1.17 0.01 0.95 0.07 Rain shwrs L S S L D L L S S S S S Tstms S S S S S Heat index 95 87 93103104 96 87 94103105 94 87 96 Max heat 105 93 108 105 85 94 105 103 96 Date 09/18 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 92 75 94 75 93 75 94 75 94 Temp 92 80 76 86 94 81 76 85 93 80 76 86 94 81 76 86 94 81 Dewpt 78 77 75 76 78 76 75 76 78 76 74 76 78 77 75 76 72 72 PWind dir E E NE E S E NE E NE Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC B1 CL CL SC B1 SC SC SC B1 SC SC SC SC CL CL SC B1 PoP 12hr 70 0 70 20 60 20 50 0 50 Rain shwrs L L L L S S L L S S C C C C Tstms S S S S S S $$ VIZ001-160800- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 232 PM AST Tue Sep 15 2026 Date 09/15/26 Wed 09/16/26 Thu 09/17/26 Fri AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 82 88 82 88 82 Temp 87 84 83 82 82 86 88 88 85 84 83 82 82 85 87 88 85 84 83 82 82 87 Dewpt 76 76 77 76 77 77 77 76 78 77 78 78 78 78 76 76 78 75 76 75 75 75 RH 70 77 82 82 85 75 70 68 80 80 85 88 88 80 70 68 80 74 80 79 79 68 Wind dir E E E E E E E E E E E E E E SE E E E E E E E Wind spd 16 17 19 18 18 19 18 17 18 19 20 21 20 19 18 17 18 19 18 16 17 16 Clouds SC SC SC CL SC SC B1 B2 B2 B2 B2 B2 B2 OV OV OV OV B2 B2 B2 B2 FW PoP 12hr 30 60 70 70 50 QPF 12hr 0.10 0.34 0.52 0.57 0.13 Rain shwrs C S S C C C C C L L L L L L L L C C C C S Tstms S S S S S S S S S S Heat index 97 93 92 89 90 96100 99 97 94 93 91 91 97 98 99 97 92 91 89 89 96 Max heat 101 92 96 100 100 93 97 99 100 91 96 Date 09/18 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 91 82 88 81 88 81 89 82 89 Temp 91 85 82 85 88 83 81 85 88 83 81 86 89 84 82 86 89 84 Dewpt 74 74 74 74 72 73 73 73 72 73 74 74 73 73 74 74 74 75 PWind dir E E E E E E E E E Wind char GN GN GN GN GN GN GN BZ BZ Avg clouds FW SC FW SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 20 40 40 40 40 40 30 20 20 Rain shwrs S S S C C C C C C C C C C C S S S S $$ VIZ002-160800- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 232 PM AST Tue Sep 15 2026 Date 09/15/26 Wed 09/16/26 Thu 09/17/26 Fri AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 81 88 81 88 81 Temp 85 83 82 81 81 85 87 88 85 83 82 81 81 85 87 88 85 83 82 81 81 86 Dewpt 76 75 76 75 76 77 77 78 77 77 78 77 77 78 77 77 77 77 77 77 77 77 RH 75 77 82 82 85 77 72 72 77 82 88 88 88 80 72 70 77 82 85 88 88 75 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 16 17 16 16 18 18 13 17 17 18 19 18 19 17 17 16 16 14 14 13 13 Clouds SC B2 SC CL SC B1 B1 B2 B2 B2 B2 B2 B2 OV OV OV OV SC SC SC SC FW PoP 12hr 50 60 70 80 30 QPF 12hr 0.13 0.38 0.54 0.67 0.07 Rain shwrs S C S C C C C L L L L L L L D D C C C C S Tstms S S S S S S S S S S Heat index 94 90 89 87 87 96 99102 96 92 91 88 88 97 99101 96 92 90 88 88 96 Max heat 98 89 96 102 100 92 97 101 101 92 96 Date 09/18 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue 09/22/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 89 81 89 81 89 81 90 80 90 Temp 89 83 81 86 89 83 81 86 89 83 81 86 90 83 81 86 90 83 Dewpt 77 76 76 76 76 75 76 76 75 75 76 76 76 76 76 76 73 75 PWind dir E E E E E E E E E Wind char GN GN GN GN GN GN GN GN BZ Avg clouds FW FW SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 20 20 20 30 30 30 30 20 20 Rain shwrs S S S S S S S C C C S C C S S S S S $$