Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
Versions:
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769 FOCA52 TJSJ 071832 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 232 PM AST Mon Sep 7 2026 PRZ001-080800- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 232 PM AST Mon Sep 7 2026 Date 09/07/26 Tue 09/08/26 Wed 09/09/26 Thu 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 90 79 88 79 Temp 87 84 82 81 80 86 89 90 85 82 81 80 79 84 87 88 84 82 80 79 79 85 Dewpt 77 77 77 76 75 76 76 76 76 76 76 75 75 75 77 77 77 77 76 76 76 76 RH 72 80 85 85 85 72 66 64 75 82 85 85 88 74 72 70 80 85 88 91 91 75 Wind dir SE SE SE SE SE E E E E E E E E E E E E E E E E E Wind spd 12 8 8 6 9 10 17 16 14 12 10 10 11 12 17 17 14 11 12 11 10 13 Clouds OV B1 FW B2 B1 B1 B1 B1 B1 SC B1 SC B2 B2 B2 B1 B1 B1 B1 B1 B1 B2 PoP 12hr 50 50 60 60 60 QPF 12hr 0.33 0.18 0.19 0.45 0.32 Rain shwrs L C C C C C C C C C C C L L C C C C C C L Tstms S S S S S S S S S Heat index 99 93 90 87 86 96101102 95 90 87 84 83 93 99100 94 89 87 84 84 94 Max heat 105 92 96 102 101 89 93 100 100 88 94 Date 09/10 Fri 09/11/26 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 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 80 90 79 91 79 90 79 91 Temp 89 83 80 86 90 82 80 86 91 83 80 85 90 82 80 86 91 83 Dewpt 77 77 76 76 76 76 75 75 74 75 75 74 75 75 75 74 72 72 PWind dir E E E E E E E E E Wind char BZ GN GN GN GN GN GN GN GN Avg clouds B2 B1 SC SC SC FW FW FW SC SC SC SC SC SC FW FW SC B1 PoP 12hr 60 20 10 5 20 20 30 10 40 Rain shwrs L C S S S S S S S S S C C S C C Tstms S S $$ PRZ002-080800- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 232 PM AST Mon Sep 7 2026 Date 09/07/26 Tue 09/08/26 Wed 09/09/26 Thu AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 81 90 80 88 80 Temp 86 84 82 81 81 86 90 90 86 83 82 81 80 85 87 88 85 82 81 80 80 85 Dewpt 78 77 77 76 76 77 77 77 77 76 76 76 76 77 77 77 78 77 77 76 76 77 RH 77 80 85 85 85 75 66 66 75 80 82 85 88 77 72 70 80 85 88 88 88 77 Wind dir SE SE SE E E E E E E E E E E E E E E E E E E E Wind spd 11 9 12 12 12 14 14 14 13 13 13 13 13 16 17 17 13 13 14 14 16 17 Clouds OV OV SC B2 B2 B2 B2 B1 B1 SC B1 SC B2 B2 B2 B2 B2 B1 B1 B2 B2 B2 PoP 12hr 70 50 60 60 60 QPF 12hr 0.41 0.18 0.21 0.50 0.38 Rain shwrs L L S C C C C C C C C C L L L C C C C L L L Tstms S S S S S S S S S Heat index 98 93 91 88 88 97102103 97 91 89 86 86 95 99101 96 91 89 86 86 94 Max heat 104 92 97 103 103 90 95 101 100 90 94 Date 09/10 Fri 09/11/26 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 88 80 90 80 89 81 87 79 88 Temp 88 82 80 86 90 83 81 85 89 83 81 85 87 81 79 84 88 83 Dewpt 78 77 76 77 77 76 75 75 75 75 75 75 75 75 75 75 74 73 PWind dir E E E E E E E E E Wind char BZ GN GN GN GN GN BZ GN GN Avg clouds B2 B1 SC SC SC SC SC SC SC SC SC SC SC SC FW FW SC B1 PoP 12hr 60 30 20 10 30 30 30 20 40 Rain shwrs L C C C S S S S S C C C C C S C C Tstms S S S S $$ PRZ007-080800- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 232 PM AST Mon Sep 7 2026 Date 09/07/26 Tue 09/08/26 Wed 09/09/26 Thu 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 93 77 90 78 Temp 86 82 80 79 78 87 91 93 86 82 80 78 78 85 89 90 85 81 80 78 78 85 Dewpt 75 76 75 74 74 72 73 73 73 72 72 71 71 72 73 73 73 73 72 72 72 72 RH 70 82 85 85 88 61 56 52 65 72 77 79 79 65 59 58 67 77 77 82 82 65 Wind dir SE E E NE NE E E SE E E NE NE E E E E E E NE E E E Wind spd 9 6 8 5 8 9 18 16 14 9 8 6 4 8 17 14 14 8 5 6 5 8 Wind gust 31 26 27 25 Clouds SC SC SC FW SC CL CL CL FW CL CL FW SC SC SC SC SC FW FW FW FW SC PoP 12hr 20 0 20 20 10 QPF 12hr 0.05 0 0.04 0.13 0.05 Rain shwrs S S S S S S S S S S S S S S Heat index 96 90 86 93100102 94 87 84 91 97 98 92 86 83 90 Max heat 103 88 93 102 101 85 91 98 98 85 90 Date 09/10 Fri 09/11/26 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 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 90 77 91 76 91 76 88 76 89 Temp 89 81 78 85 91 81 77 85 91 81 77 83 88 79 76 83 89 81 Dewpt 73 73 74 73 74 73 70 72 71 72 72 71 73 72 72 70 72 72 PWind dir E E E E E NE E E E Wind char GN LT GN GN GN LT GN LT GN Avg clouds SC SC CL CL CL CL CL CL CL FW SC FW FW SC FW FW SC SC PoP 12hr 30 0 0 0 10 10 10 5 30 Rain shwrs C C S S S S S S C C $$ PRZ008-080800- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 232 PM AST Mon Sep 7 2026 Date 09/07/26 Tue 09/08/26 Wed 09/09/26 Thu AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 77 88 77 88 78 Temp 84 81 79 78 77 84 87 88 83 80 78 77 77 83 87 88 84 81 79 78 78 83 Dewpt 78 78 77 76 75 77 78 79 78 77 76 75 74 77 78 79 78 77 77 75 76 77 RH 82 91 94 94 94 80 75 75 85 91 94 94 90 82 75 75 82 88 94 91 94 82 Wind dir E SE SE E E E E E E E E E E E E E E E E E E E Wind spd 3 3 4 3 5 9 10 16 16 12 16 12 11 14 13 20 21 17 17 17 14 14 Clouds OV B2 FW FW FW CL FW SC B1 SC SC FW FW CL CL B2 B2 SC SC FW FW FW PoP 12hr 50 30 10 60 5 QPF 12hr 0.08 0.15 0.02 0.58 0.03 Rain shwrs D C C C S S L L S S Tstms S S S S Heat index 95 89 93101103 94 87 92101102 94 88 84 92 Max heat 104 86 93 103 102 84 92 103 102 87 92 Date 09/10 Fri 09/11/26 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 87 78 88 76 89 76 86 76 87 Temp 87 81 78 84 88 80 77 84 89 80 77 82 86 79 76 82 87 80 Dewpt 79 78 75 77 78 77 74 76 77 76 74 76 76 76 74 76 74 75 PWind dir E E E E E E E E E Wind char GN GN BZ GN BZ BZ BZ BZ BZ Avg clouds SC B1 SC FW FW SC CL CL FW SC CL CL FW SC SC SC SC SC PoP 12hr 60 10 40 0 40 0 30 20 30 Rain shwrs L L S S C C C C C C S S C C Tstms S S S S $$ PRZ010-080800- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 232 PM AST Mon Sep 7 2026 Date 09/07/26 Tue 09/08/26 Wed 09/09/26 Thu 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 93 75 89 76 Temp 85 80 78 76 76 85 91 93 85 80 78 76 75 83 88 89 83 80 78 76 76 85 Dewpt 79 78 77 76 75 77 79 79 79 78 76 74 74 76 79 79 79 78 76 75 76 77 RH 82 94 97100 97 77 68 64 82 94 94 94 97 80 75 73 88 94 94 97100 77 Wind dir NE E E E E E E W E E NE NE E E E NE E E E E E E Wind spd 6 4 4 5 4 5 2 4 2 9 6 4 5 5 2 5 4 3 8 8 6 5 Clouds B2 SC FW FW FW CL SC B2 B2 SC CL CL CL CL CL B2 B2 FW FW CL CL CL PoP 12hr 20 60 10 70 5 QPF 12hr 0.03 0.86 0.02 0.63 0.01 Rain shwrs L S S L L S L L S S Tstms S S S S S Heat index 99 88 96108110 98 87 91102104 94 85 95 Max heat 110 84 96 110 109 83 91 104 103 95 Date 09/10 Fri 09/11/26 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 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 76 93 74 94 74 91 74 92 Temp 91 81 77 86 93 80 75 86 94 80 75 84 91 79 75 84 92 80 Dewpt 79 78 75 77 78 77 74 75 77 77 73 75 77 76 74 75 73 73 PWind dir E E E E NE E E E E Wind char LT LT LT LT LT GN GN GN LT Avg clouds SC B1 FW FW FW SC CL CL FW SC CL CL SC B1 SC SC SC B2 PoP 12hr 60 5 40 0 40 0 60 20 60 Rain shwrs L L S S C C C C L L S S L L Tstms S S S S S S S S $$ VIZ001-080800- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 232 PM AST Mon Sep 7 2026 Date 09/07/26 Tue 09/08/26 Wed 09/09/26 Thu AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 81 90 81 87 81 Temp 87 84 83 82 81 86 89 90 86 84 82 81 81 85 87 87 85 83 82 81 81 86 Dewpt 75 74 75 75 75 74 74 73 74 73 74 74 74 76 75 74 75 74 75 75 75 75 RH 68 72 77 79 82 68 61 58 68 70 77 79 79 75 68 65 72 74 79 82 82 70 Wind dir SE SE E E E E E E E E E E E E E E E E E E E E Wind spd 17 17 19 19 18 20 18 18 20 20 20 21 20 21 21 20 19 20 21 23 23 24 Clouds B2 SC SC B1 B1 B1 B1 SC SC SC SC B1 B2 B2 B2 SC SC SC SC B1 B1 B1 PoP 12hr 40 30 60 60 40 QPF 12hr 0.13 0.09 0.21 0.23 0.21 Rain shwrs C S S C C C C C C S C C L L L C C C C C C C Tstms S S S S Heat index 97 91 90 88 87 94 98 98 94 90 89 87 87 94 97 96 93 89 88 87 87 94 Max heat 102 91 94 98 98 89 94 97 95 89 94 Date 09/10 Fri 09/11/26 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 89 81 91 81 92 80 90 80 90 Temp 89 83 81 87 91 84 82 87 92 84 81 86 90 83 81 86 90 84 Dewpt 74 74 75 74 72 73 73 72 71 72 73 72 71 72 73 72 73 71 PWind dir E E E E E E E E E Wind char BZ BZ BZ BZ BZ BZ BZ BZ BZ Avg clouds B1 SC SC SC FW FW SC SC SC SC SC SC SC SC FW FW SC SC PoP 12hr 40 20 10 10 20 20 20 20 30 Rain shwrs C C S S S S S S S S S S S S S C C $$ VIZ002-080800- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 232 PM AST Mon Sep 7 2026 Date 09/07/26 Tue 09/08/26 Wed 09/09/26 Thu 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 90 80 88 81 Temp 87 84 82 81 80 86 89 90 86 83 82 81 80 85 88 88 85 83 82 81 81 86 Dewpt 77 77 77 77 77 77 77 76 76 76 77 77 77 77 78 77 77 77 77 77 77 77 RH 72 80 85 88 91 75 68 64 72 80 85 88 91 77 72 70 77 82 85 88 88 75 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 13 13 16 17 16 19 16 17 17 17 18 18 18 20 20 20 18 18 19 20 20 21 Clouds B2 SC SC SC SC SC SC SC SC SC SC B2 B2 B2 B2 SC SC B1 B1 B1 B1 SC PoP 12hr 30 30 60 60 40 QPF 12hr 0.07 0.07 0.21 0.21 0.22 Rain shwrs C S S S S C C S S S C C L L L S S C C C C C Tstms S S S S Heat index 98 93 90 87 87 97101102 95 91 89 87 87 95100100 95 92 91 89 89 97 Max heat 105 92 97 102 101 90 95 101 100 91 97 Date 09/10 Fri 09/11/26 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 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 80 90 80 91 79 90 78 90 Temp 89 83 80 86 90 83 81 86 91 83 80 85 90 82 79 85 90 83 Dewpt 78 77 77 77 76 76 76 76 75 76 75 76 75 76 75 76 73 72 PWind dir E E E E E E E E E Wind char BZ BZ BZ BZ BZ BZ BZ BZ GN Avg clouds SC SC SC SC FW FW FW FW SC SC SC SC SC SC SC SC SC SC PoP 12hr 30 20 10 10 20 20 20 30 30 Rain shwrs C C S S S S S S S S S S S C C S $$