Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
Versions:
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359 FOCA52 TJSJ 202103 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 503 PM AST Wed Aug 20 2025 PRZ001-210800- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 503 PM AST Wed Aug 20 2025 Date 08/20/25 Thu 08/21/25 Fri 08/22/25 Sat 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 87 79 Temp 84 82 81 81 86 89 90 87 83 82 81 81 84 87 87 85 82 81 79 80 83 Dewpt 76 75 75 74 75 75 76 76 75 75 75 75 76 77 76 76 76 75 75 76 76 RH 77 79 82 79 70 64 64 70 77 79 82 82 77 72 70 75 82 82 88 88 80 Wind dir E E E E E E E E E E E NE E E E NE E E E SE SE Wind spd 10 9 10 10 12 12 14 13 10 9 9 9 9 10 10 9 8 5 4 3 3 Clouds FW SC SC CL FW FW FW FW FW CL CL CL B2 B2 B1 B1 B1 B1 B1 B1 B2 PoP 12hr 5 10 50 50 60 QPF 12hr 0.02 0.02 0.04 0.36 0.56 Rain shwrs S S S S S S S C C C C C C C C L Tstms S S S S S Obvis H H H H H H H H H H H H Heat index 93 89 86 86 95100102 97 91 88 86 86 93 98 98 94 89 86 84 85 92 Max heat 102 92 95 102 101 90 93 98 97 88 92 Date 08/23 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 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 86 79 92 79 90 79 88 79 90 Temp 86 81 79 87 92 83 80 86 90 83 80 85 88 82 80 86 90 82 Dewpt 76 76 76 77 77 77 76 76 76 76 76 75 76 76 76 75 76 76 PWind dir SE SE E E E E E E E Wind char LT LT GN GN GN GN GN GN GN Avg clouds B2 B1 B1 B1 B1 B1 SC B1 SC SC SC B1 B1 SC SC B1 B1 B1 PoP 12hr 70 50 50 40 40 40 40 50 50 Rain shwrs L L C C C C C C C C C C C C C C C C Tstms S S S S S S $$ PRZ002-210800- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 503 PM AST Wed Aug 20 2025 Date 08/20/25 Thu 08/21/25 Fri 08/22/25 Sat AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 81 89 81 89 76 Temp 84 83 82 82 86 89 89 87 84 83 81 82 86 89 89 85 80 78 77 77 83 Dewpt 77 76 76 76 76 76 76 76 76 76 76 76 77 77 77 77 77 77 77 76 77 RH 80 80 82 82 72 66 66 70 77 80 85 82 75 68 68 77 91 97100 97 82 Wind dir E E E E E E E E NE NE NE NE NE NE NE NE NE NE E SE SE Wind spd 11 11 11 11 12 10 13 12 11 11 9 9 9 10 9 9 8 5 2 1 3 Clouds SC SC SC SC SC SC SC SC FW CL CL CL B2 B2 B2 B2 B2 B2 B2 B2 OV PoP 12hr 20 20 50 60 70 QPF 12hr 0.03 0.06 0.05 0.48 0.68 Rain shwrs S S S S S S S S S L L L L C C C C L Tstms S S S S S Obvis H H H H H H H H H H H H Heat index 94 91 88 89 96100100 97 92 90 88 89 97101102 95 87 92 Max heat 99 93 96 101 100 91 97 102 101 85 92 Date 08/23 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 87 76 90 80 89 80 89 78 90 Temp 87 80 77 85 90 83 81 86 89 83 81 86 89 82 79 85 90 83 Dewpt 77 77 77 78 78 77 77 77 77 77 76 77 77 76 76 77 77 76 PWind dir SE SE E E E E E E E Wind char GN LT GN GN GN GN GN GN GN Avg clouds B2 B1 B2 B2 B1 B1 SC SC SC SC SC B1 B1 SC B1 B1 B1 B1 PoP 12hr 70 60 50 40 40 40 40 50 50 Rain shwrs L L L L C C S C C C C C C C C C C C Tstms S S S S S S S S $$ PRZ007-210800- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 503 PM AST Wed Aug 20 2025 Date 08/20/25 Thu 08/21/25 Fri 08/22/25 Sat 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 90 76 88 77 Temp 82 80 79 79 85 89 90 86 81 79 77 77 83 87 88 85 81 79 78 78 81 Dewpt 77 75 73 72 75 76 78 77 76 74 73 72 75 78 79 79 77 75 74 74 76 RH 85 85 82 79 72 66 68 75 85 85 87 85 77 75 75 82 88 88 88 88 85 Wind dir E NE NE NE E E SE SE E NE NE NE NE E E E NE N N N E Wind spd 9 5 5 5 5 14 13 14 9 6 5 5 5 9 11 3 4 4 3 2 4 Clouds CL CL CL CL CL CL CL FW FW SC CL CL SC SC FW FW B2 B2 B2 B2 B1 PoP 12hr 0 10 20 50 50 QPF 12hr 0 0.01 0.02 0.13 0.55 Rain shwrs S S S S C C C C C Obvis H H H H H H H H H H H H Heat index 90 85 82 94101105 97 87 91100103 97 88 83 88 Max heat 100 89 94 105 104 84 91 103 102 85 88 Date 08/23 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 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 84 78 90 77 89 77 89 77 89 Temp 84 80 78 85 90 81 78 84 89 81 78 84 89 81 78 84 89 81 Dewpt 79 77 75 78 80 77 74 76 78 76 73 76 78 76 73 76 79 76 PWind dir SE E E E E NE E NE E Wind char LT LT GN LT GN LT GN LT GN Avg clouds B1 SC SC B1 B1 SC SC SC FW SC SC SC FW SC SC SC SC SC PoP 12hr 40 40 40 20 30 20 10 30 50 Rain shwrs C C C C C S S S C C S S S S S C C C Tstms S $$ PRZ008-210800- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 503 PM AST Wed Aug 20 2025 Date 08/20/25 Thu 08/21/25 Fri 08/22/25 Sat AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 78 89 78 88 78 Temp 82 80 79 79 85 88 89 86 82 80 79 79 84 87 88 85 81 80 79 79 83 Dewpt 78 76 75 74 75 75 76 76 76 75 75 74 75 77 76 75 76 75 76 75 76 RH 88 88 88 85 72 66 66 72 82 85 88 85 74 72 68 72 85 85 91 88 80 Wind dir E E E E E E NE NE E E E E E NE NE NE NE E E E E Wind spd 9 8 13 12 11 11 17 17 17 16 12 11 12 13 17 14 13 12 10 8 8 Clouds SC CL CL CL CL CL CL CL FW FW FW FW FW FW SC SC SC SC SC SC B1 PoP 12hr 10 0 20 10 40 QPF 12hr 0.01 0 0.04 0.06 0.16 Rain shwrs S S S S S S S S S S C Obvis H H H H H H H H Heat index 91 86 83 93 98100 95 89 85 92 99 99 93 88 85 91 Max heat 99 89 93 100 100 87 92 100 98 87 91 Date 08/23 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 86 77 89 77 88 78 88 77 88 Temp 86 80 78 84 89 81 78 84 88 81 79 84 88 81 78 84 88 81 Dewpt 76 75 76 76 77 77 75 76 77 76 76 76 77 76 76 75 77 76 PWind dir E E E E E E E E E Wind char LT LT LT LT BZ BZ BZ BZ GN Avg clouds B2 B2 SC SC B1 SC SC SC FW SC CL FW SC B1 FW FW SC B2 PoP 12hr 70 50 50 30 30 5 50 5 70 Rain shwrs L L S C C C C C C C C C L L Tstms S S S S S S S S $$ PRZ010-210800- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 503 PM AST Wed Aug 20 2025 Date 08/20/25 Thu 08/21/25 Fri 08/22/25 Sat 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 76 93 76 Temp 82 79 76 77 86 92 93 88 82 79 77 78 87 92 93 88 82 79 77 77 82 Dewpt 79 77 74 73 75 76 77 77 77 76 75 74 76 77 79 77 77 76 75 75 76 RH 91 94 94 87 70 60 60 70 85 91 94 88 70 62 64 70 85 91 94 94 82 Wind dir E E E E E E W NE NE NE NE NE E NE NE NE NE E E E E Wind spd 1 5 9 5 3 4 5 9 10 8 10 8 10 4 3 6 10 10 6 4 3 Clouds SC CL CL CL CL CL CL CL SC SC FW FW FW FW CL CL SC SC SC SC B1 PoP 12hr 10 20 30 30 40 QPF 12hr 0 0.01 0.04 0.07 0.36 Rain shwrs S S C S S C C C C C Obvis H H H H H H H H H H H Heat index 91 95104107100 89 84 97106110100 89 84 90 Max heat 104 88 95 107 106 88 97 110 109 88 90 Date 08/23 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 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 86 76 93 75 92 75 93 75 93 Temp 86 79 77 87 93 81 76 86 92 81 76 86 93 81 76 86 93 81 Dewpt 79 76 76 77 79 77 75 76 78 77 75 76 78 77 75 75 78 77 PWind dir SE E E E E E E E E Wind char LT LT LT LT LT LT LT GN LT Avg clouds B1 B1 SC SC SC SC SC SC FW SC CL CL SC SC FW FW SC B1 PoP 12hr 60 30 30 20 40 0 40 5 60 Rain shwrs L L S C C C S S C C C C L L Tstms S S S S $$ VIZ001-210800- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 503 PM AST Wed Aug 20 2025 Date 08/20/25 Thu 08/21/25 Fri 08/22/25 Sat AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 81 92 81 91 79 Temp 85 83 82 82 88 91 92 89 85 83 82 82 87 90 91 87 83 81 80 80 84 Dewpt 77 76 76 76 76 76 76 76 77 77 77 77 77 77 76 77 77 77 77 76 76 RH 77 80 82 82 68 62 60 66 77 82 85 85 72 66 62 72 82 88 91 88 77 Wind dir E E E E E E E E NE NE NE NE NE E E NE E E SE SE S Wind spd 17 17 17 18 17 18 17 14 16 17 14 13 14 13 11 9 9 8 5 4 8 Clouds CL CL SC SC SC SC SC SC FW FW FW FW B2 B2 B2 B2 B1 B1 B1 B1 OV PoP 12hr 20 20 50 60 70 QPF 12hr 0.02 0.06 0.05 0.46 0.59 Rain shwrs S S S S S S S L L L L C C C C L Tstms S S S S S Obvis H H H H H H H H H H H H Heat index 95 91 89 90 99104105100 95 92 89 90 99104103 99 92 89 85 85 93 Max heat 101 94 99 105 104 94 99 104 102 91 93 Date 08/23 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 87 81 92 82 92 81 92 81 92 Temp 87 83 81 88 92 85 83 88 92 85 82 88 92 85 82 88 92 85 Dewpt 76 77 78 78 77 78 78 77 77 77 77 77 77 77 77 77 77 77 PWind dir S SE E E E E E E E Wind char GN GN BZ BZ BZ BZ BZ BZ GN Avg clouds B2 B2 B2 B2 B1 SC SC SC SC SC SC B1 B1 B1 B1 B1 SC B1 PoP 12hr 70 60 50 30 30 40 40 40 50 Rain shwrs L L L L C C C C C C C C C C C C C C Tstms S S S S S S $$ VIZ002-210800- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 503 PM AST Wed Aug 20 2025 Date 08/20/25 Thu 08/21/25 Fri 08/22/25 Sat 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 79 90 78 89 76 Temp 83 81 80 80 86 89 90 86 82 80 79 79 85 88 89 85 80 78 77 77 83 Dewpt 76 75 75 75 76 75 76 76 75 76 76 76 76 77 76 77 77 76 76 76 76 RH 80 82 85 85 72 64 64 72 79 88 91 91 75 70 66 77 91 94 97 97 80 Wind dir E E E E E E E E NE NE NE NE NE E E E E E SE SE S Wind spd 16 16 16 14 13 14 14 13 13 14 13 12 12 12 10 9 8 6 5 5 10 Clouds FW SC SC SC FW FW SC SC FW CL CL CL B2 B2 SC SC B2 B2 B2 B2 OV PoP 12hr 10 20 50 50 70 QPF 12hr 0.02 0.05 0.05 0.23 0.68 Rain shwrs S S S S S S S S L L S S C C C C L Tstms S S S Obvis H H H H H H H H H H H H Heat index 90 87 84 85 96100102 96 89 86 83 94101100 95 87 92 Max heat 98 89 96 102 101 87 94 101 100 85 92 Date 08/23 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 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 79 90 79 90 79 90 79 90 Temp 88 82 80 86 90 83 80 86 90 83 80 86 90 83 80 86 90 82 Dewpt 77 77 77 78 77 77 77 77 77 77 76 77 77 76 76 77 77 76 PWind dir SE E E E E E E E E Wind char GN GN BZ GN BZ BZ GN GN GN Avg clouds OV B2 B2 B2 B1 SC SC SC SC SC SC SC B1 SC B1 B1 SC B1 PoP 12hr 70 60 50 20 20 40 40 40 50 Rain shwrs L L L L C S S S S S S C C C C C C C Tstms S S S S S S $$