Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
Versions:
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182 FOCA52 TJSJ 141832 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 232 PM AST Mon Sep 14 2026 PRZ001-150800- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 232 PM AST Mon Sep 14 2026 Date 09/14/26 Tue 09/15/26 Wed 09/16/26 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 91 80 93 80 Temp 86 84 82 81 80 86 90 91 86 83 82 81 80 88 92 93 87 84 82 81 80 87 Dewpt 75 75 76 75 75 75 76 76 76 75 75 75 75 75 75 75 76 76 76 76 76 77 RH 70 74 82 82 85 70 64 62 72 77 79 82 85 66 58 56 70 77 82 85 88 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 12 10 10 9 9 11 14 13 10 9 11 9 9 9 14 16 13 9 8 8 8 12 Clouds SC CL FW SC B1 SC SC B2 B2 SC SC SC B1 FW FW B1 B1 B1 B1 B1 B1 B2 PoP 12hr 40 50 30 50 50 QPF 12hr 0.06 0.55 0.08 0.20 0.36 Rain shwrs C S C C S C C S C C C S S C C C C C C C Tstms S S Heat index 95 92 89 86 86 96102103 96 91 88 86 85 97103105 98 93 90 87 87 98 Max heat 99 90 96 103 102 90 97 105 104 91 98 Date 09/17 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 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 80 93 79 92 79 92 79 92 Temp 92 84 81 88 93 83 80 87 92 83 80 87 92 83 80 87 92 83 Dewpt 77 76 76 76 76 76 75 75 76 75 75 75 76 75 75 75 71 75 PWind dir E E E E E SE SE SE SE Wind char BZ GN GN LT LT LT GN GN GN Avg clouds B2 B2 B2 B1 SC SC SC SC B1 B1 SC SC SC B1 SC SC B1 SC PoP 12hr 60 60 30 30 40 30 40 30 40 Rain shwrs C L L L C C S C C C C C C C C C C C Tstms S S S $$ PRZ002-150800- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 232 PM AST Mon Sep 14 2026 Date 09/14/26 Tue 09/15/26 Wed 09/16/26 Thu AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 81 90 81 91 81 Temp 86 84 82 81 81 86 89 90 86 84 82 81 81 87 90 91 87 84 83 82 81 86 Dewpt 76 75 76 75 75 76 76 76 76 75 75 75 75 75 76 76 77 76 77 77 77 77 RH 72 74 82 82 82 72 66 64 72 74 79 82 82 68 64 62 72 77 82 85 88 75 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 11 11 11 10 10 12 13 12 12 11 11 11 11 12 14 13 11 10 10 13 11 12 Clouds SC SC SC SC B1 B1 B2 B2 B2 B1 B2 B2 B2 SC SC B1 B1 OV OV OV OV B2 PoP 12hr 40 50 60 70 70 QPF 12hr 0.12 0.69 0.15 0.23 0.57 Rain shwrs C C C C C C C C C C C L C S S C C L L L L L Tstms S S S S S S S Heat index 96 92 90 88 87 96100101 97 92 90 88 88 96102103 98 93 91 89 89 98 Max heat 99 91 96 101 101 91 96 103 102 92 98 Date 09/17 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 90 81 90 81 90 80 90 80 90 Temp 90 84 81 86 90 84 81 86 90 83 81 86 90 83 81 86 90 83 Dewpt 77 76 76 77 76 75 75 76 75 75 75 75 75 75 75 75 74 74 PWind dir E E E E E E SE SE SE Wind char GN GN GN GN LT GN GN GN GN Avg clouds B2 B2 B2 B1 SC SC SC B1 B1 B1 B1 B1 B1 B1 B2 B1 B1 SC PoP 12hr 60 60 30 40 40 40 50 50 40 Rain shwrs L L L L S C C C C C C C C C C C C C Tstms S S S S $$ PRZ007-150800- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 232 PM AST Mon Sep 14 2026 Date 09/14/26 Tue 09/15/26 Wed 09/16/26 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 91 77 92 78 Temp 86 82 80 79 78 86 90 91 85 81 79 78 77 86 91 92 86 82 80 79 78 86 Dewpt 77 73 72 71 71 72 71 73 73 73 73 72 72 72 69 73 74 74 73 73 73 74 RH 75 74 77 77 79 63 54 56 67 77 82 82 85 63 49 54 68 77 79 82 85 68 Wind dir E E NE NE NE E E SE E E NE NE E E E SE E E E E E E Wind spd 13 9 5 4 5 5 14 17 12 8 5 4 4 5 14 18 14 8 5 5 6 5 Wind gust 25 28 25 29 Clouds SC CL FW CL CL FW CL B1 B1 CL CL CL FW FW FW FW FW FW FW SC SC SC PoP 12hr 0 40 5 5 20 QPF 12hr 0 0.25 0.01 0.02 0.09 Rain shwrs C C C S S S S S Heat index 97 87 84 92 96 99 92 86 83 92 95100 94 88 85 93 Max heat 103 86 92 99 99 85 92 100 100 87 93 Date 09/17 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 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 78 91 77 91 77 90 77 90 Temp 91 82 79 86 91 81 78 85 91 81 78 85 90 81 78 85 90 81 Dewpt 74 73 73 73 72 73 72 71 74 74 72 72 73 74 73 73 71 74 PWind dir E E E NE E E E E E Wind char GN LT GN LT LT LT GN LT GN Avg clouds SC B2 B2 B1 SC FW CL FW SC SC FW FW SC SC FW FW SC SC PoP 12hr 50 50 10 5 40 5 40 10 30 Rain shwrs C C C C S S S C C S C C S C C $$ PRZ008-150800- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 232 PM AST Mon Sep 14 2026 Date 09/14/26 Tue 09/15/26 Wed 09/16/26 Thu AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 77 88 76 89 78 Temp 83 80 79 78 77 83 87 88 83 80 78 77 76 84 88 89 84 81 80 79 78 84 Dewpt 77 77 76 74 74 77 78 76 77 77 76 74 74 76 77 77 77 78 77 75 75 77 RH 82 91 91 88 90 82 75 68 82 91 94 90 94 77 70 68 80 91 91 88 91 80 Wind dir E E E E E E E E E E E E E E E NE E E E E E E Wind spd 13 16 9 10 11 13 14 14 16 16 14 13 13 13 14 16 13 16 11 11 10 9 Clouds SC SC FW CL FW CL CL B2 B2 FW SC FW CL FW FW B2 B2 FW FW FW FW FW PoP 12hr 10 60 10 50 5 QPF 12hr 0.02 0.38 0.01 0.29 0.02 Rain shwrs S S C L S S C C Tstms S Heat index 92 87 92 99 99 91 85 92100101 94 89 85 94 Max heat 97 85 92 100 98 92 101 100 88 94 Date 09/17 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 89 77 89 76 88 76 88 76 88 Temp 89 81 78 84 89 80 77 83 88 80 77 83 88 80 77 83 88 80 Dewpt 79 78 75 77 78 78 75 76 76 76 74 76 76 76 74 76 74 75 PWind dir E E E E E E NE E E Wind char GN GN GN LT GN GN GN GN LT Avg clouds SC B2 SC SC SC B2 SC SC SC B1 SC SC SC B1 B1 SC SC B1 PoP 12hr 70 30 60 30 50 30 50 40 50 Rain shwrs L L C C L L C C C C C C C C C C C C Tstms S S S S $$ PRZ010-150800- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 232 PM AST Mon Sep 14 2026 Date 09/14/26 Tue 09/15/26 Wed 09/16/26 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 94 75 94 76 Temp 85 81 78 76 76 86 92 94 86 81 78 76 76 86 92 94 86 81 79 77 77 86 Dewpt 78 77 76 75 74 76 78 77 78 77 76 75 73 76 78 77 78 77 76 75 76 77 RH 80 88 94 97 94 72 64 58 77 88 94 97 90 72 64 58 77 88 91 94 97 75 Wind dir E E NE NE NE E E S NE NE NE NE E E E N NE E E E E E Wind spd 3 4 3 3 5 6 3 2 5 4 5 5 4 4 2 4 1 2 3 2 2 3 Clouds OV CL CL CL CL CL CL OV OV SC SC FW CL FW FW OV OV FW FW FW FW FW PoP 12hr 0 70 10 70 5 QPF 12hr 0 1.40 0.01 0.68 0.01 Rain shwrs L L L S S L L Tstms S S S S S Heat index 97 88 96107108 98 87 96107108 99 89 98 Max heat 105 84 96 109 108 84 96 109 108 87 98 Date 09/17 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 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 94 76 94 75 94 75 94 75 94 Temp 94 81 77 86 94 81 76 86 94 81 76 86 94 81 76 86 94 81 Dewpt 79 78 75 77 78 77 75 76 77 77 75 76 77 76 75 76 71 74 PWind dir E E NE E E E SE E E Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC B2 SC SC B1 B2 SC FW SC B2 SC SC SC B1 SC SC SC B1 PoP 12hr 70 20 70 10 60 30 50 30 40 Rain shwrs L L S S L L S S L L C C C C C C C C Tstms S S S S S S $$ VIZ001-150800- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 232 PM AST Mon Sep 14 2026 Date 09/14/26 Tue 09/15/26 Wed 09/16/26 Thu AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 82 91 82 91 82 Temp 87 85 83 82 82 87 90 91 87 85 83 82 82 87 90 91 87 85 83 82 82 87 Dewpt 76 74 75 75 74 73 74 73 74 74 75 74 73 74 74 74 75 75 76 76 76 76 RH 70 70 77 79 77 63 60 56 65 70 77 77 74 65 60 58 68 72 80 82 82 70 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 16 16 16 16 17 17 18 16 16 16 18 17 16 18 17 17 18 16 16 18 17 19 Clouds SC FW SC SC CL SC B1 SC SC B1 B2 B2 SC SC SC B1 B1 B2 B2 B2 B2 B2 PoP 12hr 20 50 50 60 60 QPF 12hr 0.06 0.12 0.12 0.16 0.50 Rain shwrs S S S S C S S C C C S S S C C L L L L L Tstms S S S S S Heat index 98 93 91 89 88 95 99 99 96 92 91 89 88 95100100 96 93 92 90 90 98 Max heat 102 91 95 100 99 91 95 100 100 92 98 Date 09/17 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 91 82 89 82 91 81 91 81 89 Temp 91 85 82 86 89 84 82 87 91 84 82 87 91 84 82 86 89 83 Dewpt 75 75 76 75 74 74 74 73 72 73 74 72 72 73 74 74 74 72 PWind dir E E E E E E SE SE E Wind char BZ BZ GN GN GN GN GN BZ BZ Avg clouds B2 B2 B2 B1 SC SC SC B1 B1 SC SC B1 B1 B1 B1 B1 B1 B1 PoP 12hr 60 50 30 40 40 40 40 40 40 Rain shwrs L L C C C C C C C C C C C C C C C C Tstms S S $$ VIZ002-150800- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 232 PM AST Mon Sep 14 2026 Date 09/14/26 Tue 09/15/26 Wed 09/16/26 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 88 80 89 81 Temp 86 84 82 81 81 85 87 88 85 82 81 80 80 85 88 89 86 83 82 81 81 87 Dewpt 76 76 76 76 76 76 76 76 76 76 76 76 75 76 77 77 77 77 78 78 78 78 RH 72 77 82 85 85 75 70 68 75 82 85 88 85 75 70 68 75 82 88 91 91 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 14 14 14 14 14 16 17 16 16 16 16 13 13 16 18 17 17 17 17 18 14 17 Clouds SC SC SC SC SC SC SC SC SC B2 B2 SC SC SC SC B1 B1 B2 B2 B2 B2 B2 PoP 12hr 30 50 50 60 60 QPF 12hr 0.10 0.08 0.08 0.16 0.50 Rain shwrs S C C C S S S S S C C S S S S C C L L L L L Tstms S S S S S Heat index 96 93 90 88 88 94 98 98 93 90 88 86 86 94100101 96 93 91 90 89 99 Max heat 100 92 94 98 98 89 94 101 100 92 99 Date 09/17 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 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 81 90 80 88 81 89 Temp 91 84 82 86 90 84 81 86 90 83 81 85 88 83 81 86 89 83 Dewpt 78 77 77 77 77 76 76 76 76 75 76 76 76 75 76 76 73 74 PWind dir E E E E E E SE E E Wind char BZ GN GN GN GN GN GN GN BZ Avg clouds B2 B2 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 60 30 20 20 20 30 30 20 30 Rain shwrs L L C C S S S S S S S C C C S S S C Tstms S S $$