Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
Versions:
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603 FOCA52 TJSJ 080632 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 232 AM AST Tue Sep 8 2026 PRZ001-082000- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 232 AM AST Tue Sep 8 2026 Date Tue 09/08/26 Wed 09/09/26 Thu 09/10/26 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 80 88 80 90 Temp 80 86 89 90 86 83 82 81 80 85 87 88 85 82 81 80 80 86 89 90 86 83 Dewpt 76 76 76 76 76 76 75 75 75 76 77 77 77 77 76 76 76 76 77 77 77 77 RH 88 72 66 64 72 80 79 82 85 75 72 70 77 85 85 88 88 72 68 66 75 82 Wind dir SE 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 16 16 14 11 11 11 10 13 17 16 14 12 12 12 12 14 18 17 13 10 Clouds SC SC B1 B1 B1 SC B1 SC B1 B2 B2 SC B2 B1 B1 B1 B1 B2 B2 B2 B2 SC PoP 12hr 40 50 50 60 60 QPF 12hr 0.27 0.17 0.40 0.24 0.41 Rain shwrs C C C C C C C C C C C C C C C C L L L L C Tstms S S S S S S S Obvis H Heat index 86 96101102 96 91 88 86 85 94 99100 95 91 88 86 86 96102103 97 92 Max heat 96 102 101 90 94 100 100 90 96 103 102 Heat Y Y Date Fri 09/11/26 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 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 90 80 91 81 90 80 91 Temp 81 86 90 83 81 86 91 84 82 86 90 83 81 86 91 83 Dewpt 76 76 76 76 75 75 75 75 74 74 75 75 74 74 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 SC SC FW FW FW SC SC SC SC SC SC FW FW SC B1 PoP 12hr 30 30 5 30 30 30 20 40 Rain shwrs C C C S S S C C C C C S C C Tstms S S $$ PRZ002-082000- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 232 AM AST Tue Sep 8 2026 Date Tue 09/08/26 Wed 09/09/26 Thu 09/10/26 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 90 82 88 81 89 Temp 82 87 89 90 87 84 83 82 82 85 87 88 85 83 82 81 81 86 88 89 85 83 Dewpt 76 76 77 76 76 76 76 76 76 77 77 77 77 76 77 77 76 77 77 77 77 76 RH 82 70 68 64 70 77 80 82 82 77 72 70 77 80 85 88 85 75 70 68 77 80 Wind dir SE E E E E E E E E E E E E E E E E E E E E E Wind spd 12 13 14 14 14 12 13 14 14 18 18 16 14 14 16 17 18 18 17 16 13 12 Clouds SC B1 B2 B1 B1 SC B1 SC B2 B2 B2 SC B2 B1 B1 B2 B2 B2 B2 B2 B2 B1 PoP 12hr 50 60 60 60 60 QPF 12hr 0.29 0.20 0.42 0.28 0.46 Rain shwrs S C C C C C C C L L L C C C C L L L L L L C Tstms S S S S S S S Obvis H Heat index 90 97102102 97 94 92 90 90 96 99100 96 91 90 89 88 97101101 96 91 Max heat 97 103 102 93 96 100 100 91 97 102 101 Heat Y Y Date Fri 09/11/26 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 80 90 81 90 82 87 81 88 Temp 80 86 90 84 81 86 90 84 82 85 87 83 81 85 88 83 Dewpt 77 77 77 75 75 75 76 75 75 75 75 75 74 75 75 75 PWind dir E E E E E E E E Wind char GN BZ GN GN GN GN GN GN Avg clouds B1 SC SC SC SC SC SC SC SC SC SC SC CL FW B1 B1 PoP 12hr 40 30 10 30 30 30 30 40 Rain shwrs C C C S S S S C C C C C C C C Tstms S S $$ PRZ007-082000- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 232 AM AST Tue Sep 8 2026 Date Tue 09/08/26 Wed 09/09/26 Thu 09/10/26 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 93 78 90 78 91 Temp 78 87 92 93 87 83 80 79 78 85 89 90 85 82 80 79 78 86 90 91 85 81 Dewpt 74 76 79 77 77 75 74 74 72 75 78 77 77 75 75 75 74 76 78 77 78 76 RH 88 70 66 60 72 77 82 85 82 72 70 66 77 79 85 88 88 72 68 64 80 85 Wind dir E E E SE SE E NE NE NE E E E E E NE E E E E E E E Wind spd 6 6 17 14 13 9 6 6 6 10 17 16 13 6 6 6 6 10 17 16 13 9 Wind gust 28 25 24 28 26 28 26 Clouds FW SC CL SC SC CL FW FW SC SC SC FW SC SC SC SC SC SC SC SC SC SC PoP 12hr 10 20 30 20 30 QPF 12hr 0.05 0.06 0.19 0.07 0.15 Rain shwrs S S S S S S C S S S S S S S S C C S Obvis H H H Heat index 97109107 98 90 85 93103103 95 88 85 95104104 97 88 Max heat 97 109 108 88 93 105 104 87 95 105 104 Heat Y Y Date Fri 09/11/26 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 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 91 77 91 77 88 77 89 Temp 78 85 91 81 78 85 91 81 78 83 88 80 78 84 89 81 Dewpt 75 76 77 75 74 74 76 74 73 74 76 74 73 74 76 75 PWind dir E E E E NE E E E Wind char GN GN LT GN LT GN LT GN Avg clouds SC FW FW SC CL CL CL FW SC SC SC SC FW SC SC SC PoP 12hr 10 20 0 10 10 10 30 30 Rain shwrs S S S S S S S S S C C C $$ PRZ008-082000- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 232 AM AST Tue Sep 8 2026 Date Tue 09/08/26 Wed 09/09/26 Thu 09/10/26 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 88 78 88 78 87 Temp 78 84 87 88 84 81 80 79 78 84 87 88 84 81 80 79 78 83 86 87 82 79 Dewpt 75 77 78 79 78 78 76 75 74 77 78 79 78 78 77 76 75 77 78 79 78 78 RH 91 80 75 75 82 91 88 88 88 80 75 75 82 91 91 91 91 82 77 77 88 97 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 5 10 10 16 17 13 14 12 11 13 12 21 23 23 19 18 16 14 13 18 9 11 Clouds CL CL FW B1 B1 SC FW FW FW FW CL B1 B2 SC SC FW FW FW FW B2 B2 SC PoP 12hr 40 10 60 10 60 QPF 12hr 0.35 0.02 0.71 0.02 0.67 Rain shwrs C C S L L S S L L S Tstms S S S S S Obvis H H H H Heat index 93100103 94 89 84 93100103 94 89 85 92 99101 92 84 Max heat 93 103 102 88 93 103 102 88 92 101 100 Heat Y Y Date Fri 09/11/26 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 76 88 77 89 78 86 77 87 Temp 77 83 88 80 78 84 89 81 79 83 86 80 77 83 87 79 Dewpt 75 77 78 78 74 76 77 76 74 76 76 76 74 76 77 76 PWind dir E E E E E E E E Wind char GN GN GN BZ BZ BZ BZ BZ Avg clouds FW FW SC SC CL CL FW SC CL CL FW SC SC SC SC SC PoP 12hr 20 30 0 40 0 30 20 30 Rain shwrs S S C C C C C C S S C C Tstms S S $$ PRZ010-082000- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 232 AM AST Tue Sep 8 2026 Date Tue 09/08/26 Wed 09/09/26 Thu 09/10/26 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 93 76 89 76 91 Temp 77 86 92 93 86 81 79 77 76 84 88 89 83 80 78 77 76 85 90 91 84 80 Dewpt 75 77 79 79 79 78 76 74 73 76 79 79 80 78 76 75 75 77 79 79 79 78 RH 94 75 66 64 80 91 91 90 90 77 75 73 91 94 94 94 97 77 70 68 85 94 Wind dir NE E E NE NW E NE NE NE E E E E E E E E E E E E E Wind spd 4 4 2 4 2 5 6 5 5 5 3 3 4 6 10 9 6 4 2 5 3 3 Clouds CL CL SC B2 B2 SC CL CL FW CL CL B1 B2 FW FW CL CL CL CL B2 B2 FW PoP 12hr 60 10 70 5 60 QPF 12hr 0.84 0.01 0.75 0.01 0.67 Rain shwrs S L L S L L S S L L S Tstms S S S S S S Obvis H H H H Heat index 98108110 99 89 92103104 96 86 95106107 96 86 Max heat 98 112 109 87 92 106 105 84 95 108 106 Heat Y Y Date Fri 09/11/26 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 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 75 93 75 93 76 91 75 92 Temp 76 85 93 80 76 85 93 81 77 85 91 80 76 85 92 80 Dewpt 75 77 79 77 74 75 77 76 74 75 77 76 74 75 77 76 PWind dir E E E NE E E E E Wind char LT LT LT LT GN LT GN LT Avg clouds FW FW SC SC CL CL FW SC CL CL SC B1 SC SC SC B2 PoP 12hr 10 40 0 40 0 60 20 60 Rain shwrs S S C C C C L L S S L L Tstms S S S S S S S S $$ VIZ001-082000- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 232 AM AST Tue Sep 8 2026 Date Tue 09/08/26 Wed 09/09/26 Thu 09/10/26 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 90 82 87 82 89 Temp 83 87 89 90 87 84 83 82 82 85 87 87 85 84 83 82 82 86 88 89 86 83 Dewpt 78 77 76 76 77 77 77 78 78 78 77 76 78 77 78 78 78 78 77 76 78 77 RH 85 72 66 64 72 80 82 88 88 80 72 70 80 80 85 88 88 77 70 66 77 82 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 18 20 18 18 19 20 20 20 23 23 23 19 19 21 24 24 24 24 23 20 19 19 Clouds SC B1 B1 SC SC SC SC B1 B2 B1 B1 SC SC SC SC B1 B1 B1 B1 SC SC SC PoP 12hr 30 60 40 40 40 QPF 12hr 0.17 0.22 0.26 0.17 0.19 Rain shwrs S C C S S S C C L C C C C C C C C C C C C S Tstms S Obvis H H Heat index 93 99101102 98 95 93 92 91 96 98 97 96 93 93 92 92 98101100 98 93 Max heat 99 102 102 94 96 99 100 93 98 101 101 Heat Y Y Date Fri 09/11/26 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 81 91 81 91 82 90 82 90 Temp 81 87 91 84 82 87 91 85 82 87 90 84 82 87 90 84 Dewpt 78 77 76 76 77 76 75 76 76 76 75 76 76 75 74 75 PWind dir E E E E E E E E Wind char BZ BZ BZ BZ BZ BZ BZ BZ Avg clouds SC SC SC FW SC SC SC SC SC SC SC SC FW FW SC SC PoP 12hr 20 20 10 20 20 20 30 30 Rain shwrs S S S S S S S S S S S S C C C $$ VIZ002-082000- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 232 AM AST Tue Sep 8 2026 Date Tue 09/08/26 Wed 09/09/26 Thu 09/10/26 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 88 80 90 Temp 81 86 89 90 86 84 82 81 81 85 87 88 85 82 81 80 80 86 89 90 86 84 Dewpt 77 77 77 77 76 76 77 77 77 78 78 77 77 77 78 77 77 78 78 77 77 77 RH 88 75 68 66 72 77 85 88 88 80 75 70 77 85 91 91 91 77 70 66 75 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 14 17 18 17 17 18 18 19 19 20 21 19 19 19 20 21 21 21 21 19 18 17 Clouds SC SC SC SC SC SC SC B1 B2 SC B1 FW SC B1 B1 B1 B1 B1 B1 SC SC SC PoP 12hr 30 60 40 40 30 QPF 12hr 0.11 0.21 0.21 0.20 0.18 Rain shwrs S C C S S S C C L C C S S C C C C C C C C S Tstms S Obvis H H Heat index 89 98102103 96 92 91 89 89 97101100 95 91 90 87 87 98103103 97 93 Max heat 98 103 101 92 97 101 100 90 98 104 102 Heat Y Y Date Fri 09/11/26 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 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 79 90 81 90 80 90 Temp 81 86 90 82 80 85 90 84 81 86 90 83 81 86 90 84 Dewpt 77 77 77 76 76 76 76 76 75 76 76 75 75 76 75 75 PWind dir E E E E E E E E Wind char BZ BZ BZ BZ BZ BZ BZ BZ Avg clouds SC SC FW FW FW FW FW FW SC SC SC SC SC SC B1 SC PoP 12hr 20 10 10 10 30 30 40 40 Rain shwrs S S S S S S S C C S S C C S $$