Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
Versions:
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627 FOCA52 TJSJ 170903 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 503 AM AST Thu Jul 17 2025 PRZ001-172000- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 503 AM AST Thu Jul 17 2025 Date Thu 07/17/25 Fri 07/18/25 Sat 07/19/25 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 89 79 89 77 88 Temp 85 88 89 87 82 81 79 80 85 88 89 86 81 79 77 78 84 87 88 85 81 Dewpt 74 74 74 75 75 75 74 73 76 75 76 76 75 75 74 74 74 75 75 75 75 RH 70 63 61 68 79 82 85 79 75 66 66 72 82 88 90 88 72 68 66 72 82 Wind dir E E E E E E E E E E E E E E E E E E E E E Wind spd 11 16 14 13 11 10 11 9 10 13 14 12 10 9 9 8 8 12 16 13 9 Clouds B2 B2 B1 SC SC B1 B2 B1 SC B2 SC SC B1 B1 OV OV B1 B1 B2 B2 B2 PoP 12hr 50 50 60 70 60 QPF 12hr 0.22 0.11 0.12 0.31 0.80 Rain shwrs C C C C C C C C S L C C C C L L C C L L C Tstms S S S S Obvis H Heat index 93 97 98 96 89 87 84 94 98100 96 87 83 91 97 98 94 86 Max heat 93 98 98 89 94 100 100 86 91 98 97 Date Sun 07/20/25 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 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 89 78 88 78 90 79 90 Temp 77 84 89 82 78 84 88 81 78 85 90 83 79 86 90 83 Dewpt 74 75 75 75 74 74 73 73 75 75 75 75 75 75 76 75 PWind dir E E E E E E E E Wind char GN GN GN GN GN BZ GN BZ Avg clouds B1 B1 SC SC SC SC SC B1 SC SC SC SC CL FW SC SC PoP 12hr 50 40 20 40 30 30 10 30 Rain shwrs C C C C S S C C C C C S S C C Tstms S $$ PRZ002-172000- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 503 AM AST Thu Jul 17 2025 Date Thu 07/17/25 Fri 07/18/25 Sat 07/19/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 89 80 88 78 90 Temp 85 88 89 87 83 82 80 81 85 87 88 86 81 80 78 80 85 89 90 87 83 Dewpt 75 75 76 76 75 75 74 73 75 75 75 75 75 74 74 74 74 75 75 75 75 RH 72 66 66 70 77 79 82 77 72 68 66 70 82 82 88 82 70 64 62 68 77 Wind dir E E E E E E E E E E E E NE E E E E E E E E Wind spd 13 13 13 13 12 12 12 10 10 11 12 11 10 11 10 9 9 11 11 12 9 Clouds B2 B2 B2 SC B1 B1 B2 SC SC B2 SC SC B1 B1 OV OV B1 B1 B2 B2 B2 PoP 12hr 60 60 60 70 60 QPF 12hr 0.70 0.14 0.12 0.31 0.80 Rain shwrs C C L C C C L S S L C C C C L L C C L L C Tstms S S S S Obvis H H Heat index 94 98100 98 90 89 84 86 93 97 98 94 88 84 84 93 99101 97 90 Max heat 94 100 101 90 93 99 97 86 93 101 100 Date Sun 07/20/25 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 79 89 80 88 80 90 80 90 Temp 79 85 89 83 80 85 88 83 80 86 90 83 80 86 90 83 Dewpt 75 75 75 75 74 73 74 74 75 75 76 75 75 75 76 75 PWind dir E E E E E E E E Wind char GN GN GN GN GN BZ BZ BZ Avg clouds B2 B2 B2 B1 SC SC B1 B1 B1 B1 SC SC SC SC SC SC PoP 12hr 50 50 40 50 40 40 30 30 Rain shwrs C C C C S C C C C C C S S C C C Tstms S S S S $$ PRZ007-172000- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 503 AM AST Thu Jul 17 2025 Date Thu 07/17/25 Fri 07/18/25 Sat 07/19/25 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 91 76 91 76 90 Temp 85 90 91 87 81 79 77 78 85 90 91 87 81 79 77 78 84 89 90 87 81 Dewpt 72 72 73 74 74 73 73 71 73 75 76 77 75 73 72 71 73 75 76 76 75 RH 65 56 56 65 79 82 87 79 67 62 62 72 82 82 85 79 70 64 64 70 82 Wind dir E E SE E E NE NE E E SE SE SE NE NE NE NE E E SE SE E Wind spd 6 16 16 16 10 6 6 8 6 13 14 11 6 5 5 4 5 13 14 12 9 Wind gust 26 26 26 24 25 25 Clouds CL SC SC SC CL CL CL FW CL CL SC SC SC SC CL CL CL CL SC SC FW PoP 12hr 10 5 20 10 10 QPF 12hr 0.01 0 0.02 0.01 0.01 Rain shwrs S S S S S S S S S S Obvis H H H H H H H H H H H H Heat index 91 97100 95 86 92100103 99 87 91 99102 97 86 Max heat 91 100 99 84 92 103 102 85 91 102 101 Date Sun 07/20/25 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 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 89 76 89 76 91 77 91 Temp 77 84 89 80 77 84 89 80 77 85 91 82 78 85 91 81 Dewpt 72 74 76 75 71 73 74 73 72 74 75 74 73 74 76 74 PWind dir E E E E E E E E Wind char LT GN LT GN LT GN GN GN Avg clouds FW FW SC SC CL CL FW SC SC SC FW FW CL FW FW FW PoP 12hr 5 20 0 20 5 5 0 10 Rain shwrs S S S S S S S S S S S $$ PRZ008-172000- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 503 AM AST Thu Jul 17 2025 Date Thu 07/17/25 Fri 07/18/25 Sat 07/19/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 88 77 86 76 87 Temp 84 87 88 85 81 79 77 78 82 85 86 84 79 78 76 77 83 86 87 84 79 Dewpt 74 75 75 76 76 76 75 73 75 75 76 75 75 75 75 75 74 74 75 74 74 RH 72 68 66 75 85 91 94 85 79 72 72 74 88 91 97 94 74 68 68 72 85 Wind dir E E E E E E E E E E NE NE E E E E E E NE E E Wind spd 14 18 19 18 18 17 16 12 12 12 18 17 17 16 14 13 11 9 10 5 9 Clouds FW SC FW B2 SC SC SC SC FW SC SC SC CL CL SC SC SC SC OV OV B2 PoP 12hr 50 30 20 10 70 QPF 12hr 0.31 0.06 0.03 0.01 1.11 Rain shwrs S S C S C S S S S S S S S S S L L L Tstms S S S S Obvis H H H H H H H H H H Heat index 91 96 98 94 87 89 94 96 91 84 89 94 96 91 83 Max heat 91 98 98 86 89 96 95 89 96 96 Date Sun 07/20/25 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 75 88 75 87 76 89 76 89 Temp 75 83 88 79 76 82 87 80 76 84 89 80 77 84 89 80 Dewpt 75 74 76 75 75 73 74 74 75 74 76 75 76 75 76 75 PWind dir E E E E E E E E Wind char GN GN GN GN GN BZ GN BZ Avg clouds B1 SC SC B1 FW FW SC SC FW FW FW SC FW FW SC SC PoP 12hr 60 60 5 40 0 30 5 30 Rain shwrs L S L L C C C C C C Tstms S S S $$ PRZ010-172000- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 503 AM AST Thu Jul 17 2025 Date Thu 07/17/25 Fri 07/18/25 Sat 07/19/25 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 75 92 73 90 Temp 85 91 93 89 81 78 76 77 85 91 92 87 79 76 74 75 83 89 90 86 79 Dewpt 72 72 74 75 76 75 73 72 76 78 79 78 76 76 74 73 75 77 78 77 75 RH 65 54 54 64 85 91 90 85 75 66 66 75 91100100 94 77 68 68 75 88 Wind dir E E SE E E E E E E E S NE E E E E E E NE E E Wind spd 6 2 2 2 4 6 6 5 3 4 3 3 11 10 8 5 3 3 3 6 6 Clouds CL CL B2 OV B1 CL CL FW CL CL OV OV SC SC CL CL CL CL OV OV B1 PoP 12hr 80 40 70 30 80 QPF 12hr 0.97 0.04 0.70 0.04 1.22 Rain shwrs L D C L L C C D D C Tstms S S S S C C Obvis H H H H H H H Heat index 91 99103 99 87 95105109100 84 91101105 97 Max heat 91 103 103 86 95 109 108 91 105 104 Date Sun 07/20/25 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 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 73 92 74 91 74 93 74 93 Temp 74 84 92 80 75 84 91 80 75 85 93 80 75 85 93 80 Dewpt 74 75 79 76 74 75 77 76 73 75 79 77 74 75 79 77 PWind dir E E E E E E E E Wind char LT LT LT LT LT LT GN LT Avg clouds SC CL SC B1 CL CL SC B1 FW FW SC B1 CL CL SC B1 PoP 12hr 40 60 0 60 0 60 0 60 Rain shwrs C L L L L L L L L Tstms S S S S S S S S $$ VIZ001-172000- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 503 AM AST Thu Jul 17 2025 Date Thu 07/17/25 Fri 07/18/25 Sat 07/19/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 90 81 89 80 89 Temp 86 89 90 88 84 83 81 82 86 88 89 87 83 82 80 81 85 88 89 87 84 Dewpt 75 75 75 75 75 74 73 72 76 76 76 76 76 76 76 75 75 75 76 75 76 RH 70 64 62 66 74 74 77 72 72 68 66 70 80 82 88 82 72 66 66 68 77 Wind dir E E E E E E E E E E E E E E E E E E E E E Wind spd 19 18 18 17 19 19 17 16 16 16 14 14 16 16 14 13 13 13 12 13 14 Clouds SC SC SC SC SC SC SC SC FW SC SC SC SC SC B2 B2 SC SC SC SC SC PoP 12hr 30 30 30 50 30 QPF 12hr 0.09 0.07 0.05 0.08 0.07 Rain shwrs C S S S C S S S S C S S S S C C S S C C S Obvis H H H H H H H H H Heat index 95 99101 98 92 90 86 87 96100100 97 91 88 86 87 94 98100 96 92 Max heat 95 101 101 92 96 100 100 90 94 100 100 Date Sun 07/20/25 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 81 89 81 89 81 91 81 90 Temp 81 86 89 84 81 86 89 84 81 87 91 84 81 86 90 84 Dewpt 76 76 76 76 76 74 75 76 76 76 76 77 76 77 77 77 PWind dir E E E E E E E E Wind char BZ BZ BZ BZ BZ BZ BZ BZ Avg clouds SC B1 B1 SC SC SC B1 SC SC SC SC SC SC SC SC SC PoP 12hr 50 40 40 40 30 30 20 20 Rain shwrs C C C S S C C S S C C S S S S S Tstms S S $$ VIZ002-172000- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 503 AM AST Thu Jul 17 2025 Date Thu 07/17/25 Fri 07/18/25 Sat 07/19/25 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 89 79 89 77 89 Temp 85 88 89 87 82 81 79 80 85 88 89 86 81 79 77 79 84 88 89 86 82 Dewpt 75 75 75 74 73 73 71 71 75 75 75 75 75 75 75 75 75 75 75 75 75 RH 72 66 64 65 74 77 77 74 72 66 64 70 82 88 94 88 74 66 64 70 79 Wind dir E E E E E E E E E E E E E E E E E E E E E Wind spd 17 18 18 16 16 17 16 13 12 13 13 13 13 14 13 12 12 13 13 13 11 Clouds SC SC SC SC CL SC SC SC FW FW SC SC CL CL SC SC SC SC B2 B2 B1 PoP 12hr 30 20 20 30 50 QPF 12hr 0.08 0.03 0.03 0.07 0.68 Rain shwrs C S S S S S S S S S S C C C C C C C Tstms S S Obvis H H H H H H H H H H H Heat index 94 98 99 95 87 86 83 94 98 99 95 87 83 92 98 99 95 88 Max heat 94 99 99 87 94 100 99 86 92 99 99 Date Sun 07/20/25 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 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 78 90 78 89 78 91 79 91 Temp 78 85 90 82 78 85 89 82 78 86 91 83 79 86 91 83 Dewpt 75 75 75 75 74 73 74 75 76 75 76 75 76 76 76 75 PWind dir E E E E E E E E Wind char GN BZ BZ BZ BZ BZ BZ BZ Avg clouds B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 40 40 20 20 20 10 20 20 Rain shwrs C C C S S S S S S S S S S S S S $$