Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
105 FOCA52 TJSJ 172103 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 503 PM AST Thu Jul 17 2025 PRZ001-180800- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 503 PM AST Thu Jul 17 2025 Date 07/17/25 Fri 07/18/25 Sat 07/19/25 Sun 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 89 77 88 77 Temp 82 81 79 80 85 88 89 86 81 79 77 78 84 87 88 85 81 79 77 79 84 Dewpt 75 75 74 73 76 75 76 76 75 75 74 74 74 75 75 75 75 74 74 74 75 RH 79 82 85 79 75 66 66 72 82 88 90 88 72 68 66 72 82 85 90 85 74 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 11 11 10 10 13 14 13 10 9 8 6 8 11 16 13 10 9 8 8 9 Clouds SC B1 B2 B1 SC B2 SC SC B1 B2 B2 B2 B1 B2 B2 B2 B2 B2 B1 B1 SC PoP 12hr 50 60 60 60 50 QPF 12hr 0.11 0.12 0.31 0.81 0.11 Rain shwrs C C C C S L C C C C C L C L L L C C C C S Tstms S S S S Obvis H Heat index 89 87 84 94 98100 96 87 83 91 97 98 94 86 92 Max heat 96 89 94 100 100 86 91 98 97 85 92 Date 07/20 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 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 89 78 88 78 90 79 90 79 90 Temp 89 82 78 84 88 81 78 85 90 83 79 86 90 83 79 86 90 82 Dewpt 75 75 74 74 73 73 75 75 75 75 75 75 76 75 75 75 75 73 PWind dir E E E E E E E E E Wind char GN LT GN GN BZ GN BZ GN BZ Avg clouds SC SC SC SC SC B1 SC SC SC SC CL FW SC SC SC SC SC SC PoP 12hr 40 20 40 30 30 10 30 20 30 Rain shwrs C C S S C C C C C S S C C S S C C $$ PRZ002-180800- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 503 PM AST Thu Jul 17 2025 Date 07/17/25 Fri 07/18/25 Sat 07/19/25 Sun AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 80 88 78 90 79 Temp 83 82 80 81 85 87 88 86 81 80 78 80 85 89 90 87 83 81 79 80 85 Dewpt 75 75 74 73 75 75 75 75 75 74 74 74 74 75 75 75 75 74 75 74 75 RH 77 79 82 77 72 68 66 70 82 82 88 82 70 64 62 68 77 79 88 82 72 Wind dir E E E E E E E NE NE E E E E E E E E E E E E Wind spd 13 12 12 11 11 12 12 12 10 10 9 9 10 10 10 11 10 10 9 10 12 Clouds B1 B1 B2 SC SC B2 SC SC B1 SC B2 B2 B1 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 60 60 60 60 50 QPF 12hr 0.14 0.12 0.31 0.81 0.12 Rain shwrs C C L S S L C C C C C L C L L L C C C C C Tstms S S S S S S Obvis H H Heat index 90 89 84 86 93 97 98 94 88 84 84 93 99101 97 90 86 84 85 94 Max heat 98 90 93 99 97 86 93 101 100 89 94 Date 07/20 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 89 80 88 80 90 80 90 80 88 Temp 89 83 80 85 88 83 80 86 90 83 80 86 90 83 80 85 88 83 Dewpt 75 75 74 73 74 74 75 75 76 75 75 75 76 75 75 75 75 73 PWind dir E E E E E E E E E Wind char GN GN GN GN BZ GN GN GN GN Avg clouds B2 B1 SC SC B1 B1 B1 B1 SC SC SC SC SC SC SC B1 B1 B1 PoP 12hr 50 40 50 40 40 30 30 40 40 Rain shwrs C C S C C C C C C S S C C C C C C C Tstms S S $$ PRZ007-180800- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 503 PM AST Thu Jul 17 2025 Date 07/17/25 Fri 07/18/25 Sat 07/19/25 Sun 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 76 91 76 90 76 Temp 81 79 77 78 85 90 91 87 81 79 77 78 84 89 90 87 81 78 77 78 84 Dewpt 74 73 73 71 73 75 76 77 75 73 72 71 73 75 76 76 75 73 72 72 74 RH 79 82 87 79 67 62 62 72 82 82 85 79 70 64 64 70 82 85 85 82 72 Wind dir E NE NE NE E SE SE SE E NE NE NE E SE SE E E E E E E Wind spd 9 5 6 6 8 13 14 12 9 6 5 4 5 13 13 10 6 5 5 6 8 Wind gust 24 25 Clouds CL CL CL FW CL CL SC SC SC FW CL CL CL SC SC SC FW FW CL CL SC PoP 12hr 5 20 10 30 5 QPF 12hr 0 0.02 0.01 0.03 0.01 Rain shwrs S S S C S S S S S Obvis H H H H H H H H Heat index 86 92100103 99 87 91 99102 97 86 91 Max heat 95 84 92 103 102 85 91 102 101 84 91 Date 07/20 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 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 89 76 89 76 91 77 91 76 91 Temp 89 80 77 84 89 80 77 85 91 82 78 85 91 81 77 85 91 81 Dewpt 76 75 71 73 74 73 72 74 75 74 73 74 76 74 72 74 75 69 PWind dir E E E E E E E E E Wind char GN LT GN LT GN GN GN LT GN Avg clouds SC SC CL CL FW SC SC SC FW FW CL FW FW FW CL CL FW SC PoP 12hr 20 0 20 5 5 0 10 0 30 Rain shwrs S S S S S S S S S C C $$ PRZ008-180800- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 503 PM AST Thu Jul 17 2025 Date 07/17/25 Fri 07/18/25 Sat 07/19/25 Sun AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 77 86 76 87 75 Temp 81 79 77 78 82 85 86 84 79 78 76 77 83 86 87 84 79 77 75 77 83 Dewpt 76 76 75 73 75 75 76 75 75 75 75 75 74 74 75 74 74 75 75 74 74 RH 85 91 94 85 79 72 72 74 88 91 97 94 74 68 68 72 85 94100 90 74 Wind dir E E E E E E NE E E E E E E E E E E E E E E Wind spd 19 18 16 13 13 12 16 14 18 16 16 12 12 9 9 8 6 8 8 8 6 Clouds SC SC SC SC FW SC SC SC CL SC SC SC SC SC OV OV B2 B2 SC SC CL PoP 12hr 30 20 10 70 60 QPF 12hr 0.06 0.03 0.02 1.11 0.13 Rain shwrs S C S S S S S S S S S S S L L L L S S Tstms S S S S Obvis H H H H H H H Heat index 87 89 94 96 91 84 89 94 96 91 83 89 Max heat 94 86 89 96 95 89 96 96 89 Date 07/20 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 88 75 87 76 89 76 89 76 87 Temp 88 79 76 82 87 80 76 84 89 80 77 84 89 80 77 83 87 80 Dewpt 76 75 75 73 74 74 75 74 76 75 76 75 76 75 76 74 75 73 PWind dir E E E E E E E E E Wind char LT GN GN GN GN GN BZ BZ BZ Avg clouds SC B1 FW FW SC SC FW FW FW SC FW FW SC SC CL CL FW SC PoP 12hr 60 5 40 0 30 5 30 0 20 Rain shwrs L L C C C C C C S S Tstms S S $$ PRZ010-180800- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 503 PM AST Thu Jul 17 2025 Date 07/17/25 Fri 07/18/25 Sat 07/19/25 Sun 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 92 73 90 73 Temp 81 78 76 77 85 91 92 87 79 76 74 75 83 89 90 86 79 76 74 75 84 Dewpt 76 75 73 72 76 78 79 78 76 76 74 73 75 77 78 77 75 75 74 73 75 RH 85 91 90 85 75 66 66 75 91100100 94 77 68 68 75 88 97100 94 74 Wind dir NE E E E E E S E NE E E E E E E NE E E E E E Wind spd 5 5 6 5 4 3 4 4 13 8 9 4 4 3 4 3 5 5 5 4 4 Clouds B1 CL CL FW CL CL B2 OV SC FW CL CL CL SC OV OV B1 B1 CL CL CL PoP 12hr 40 70 30 80 40 QPF 12hr 0.04 0.69 0.03 1.22 0.04 Rain shwrs C L L C S D D C C Tstms S S C C Obvis H H H H H Heat index 87 95105109100 84 91101105 97 93 Max heat 99 86 95 109 108 91 105 104 93 Date 07/20 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 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 92 74 91 74 93 74 93 74 92 Temp 92 80 75 84 91 80 75 85 93 80 75 85 93 80 75 85 92 80 Dewpt 79 76 74 75 77 76 73 75 79 77 74 75 79 77 73 75 78 72 PWind dir E E E E E E E E E Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC B1 CL CL SC B1 FW FW SC B1 CL CL SC B1 CL CL SC SC PoP 12hr 60 0 60 0 60 0 60 0 50 Rain shwrs L L L L L L L L C C Tstms S S S S S S S S S S $$ VIZ001-180800- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 503 PM AST Thu Jul 17 2025 Date 07/17/25 Fri 07/18/25 Sat 07/19/25 Sun AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 81 89 80 89 81 Temp 84 83 81 82 86 88 89 87 83 82 80 81 85 88 89 87 84 82 81 82 86 Dewpt 75 74 73 72 76 76 76 76 76 76 76 75 75 75 76 75 76 76 76 76 76 RH 74 74 77 72 72 68 66 70 80 82 88 82 72 66 66 68 77 82 85 82 72 Wind dir E E E E E E E E E E E E E E E E E E E E E Wind spd 18 20 18 17 16 16 13 13 14 17 16 14 13 12 12 13 14 16 16 16 17 Clouds SC SC SC SC FW SC SC SC SC B1 B1 B1 SC SC SC SC SC SC B2 B2 B1 PoP 12hr 30 30 40 30 50 QPF 12hr 0.07 0.05 0.08 0.07 0.09 Rain shwrs C S S S S C S S S C C C S S C C S S C C C Tstms S S Obvis H H H H H H Heat index 92 90 86 87 96100100 97 91 88 86 87 94 98100 96 92 90 88 89 96 Max heat 98 92 96 100 100 90 94 100 100 92 96 Date 07/20 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 89 81 89 81 91 81 90 81 90 Temp 89 84 81 86 89 84 81 87 91 84 81 86 90 84 81 86 90 84 Dewpt 76 76 76 74 75 76 76 76 76 77 76 77 77 77 76 76 76 73 PWind dir E E E E E E E E E Wind char BZ BZ BZ BZ BZ BZ BZ BZ BZ Avg clouds B1 SC SC SC B1 SC SC SC SC SC SC SC SC SC SC SC SC FW PoP 12hr 40 40 40 30 30 20 20 20 20 Rain shwrs C S S C C S S C C S S S S S S S S S $$ VIZ002-180800- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 503 PM AST Thu Jul 17 2025 Date 07/17/25 Fri 07/18/25 Sat 07/19/25 Sun 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 89 77 89 78 Temp 82 81 79 80 85 88 89 86 81 79 77 79 84 88 89 86 82 80 78 80 85 Dewpt 73 73 71 71 75 75 75 75 75 75 75 75 75 75 75 75 75 75 75 74 75 RH 74 77 77 74 72 66 64 70 82 88 94 88 74 66 64 70 79 85 91 82 72 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 14 17 16 14 13 14 14 13 14 14 13 12 13 13 12 13 12 13 12 13 16 Clouds CL SC SC SC FW FW SC SC CL SC SC SC SC SC B2 B2 B1 B1 B1 B1 B1 PoP 12hr 20 20 30 50 40 QPF 12hr 0.03 0.03 0.07 0.67 0.11 Rain shwrs S S S S S S S S S C C S C C C C C C C Tstms S S Obvis H H H H H H H H Heat index 87 86 83 94 98 99 95 87 83 92 98 99 95 88 85 84 94 Max heat 95 87 94 100 99 86 92 99 99 87 94 Date 07/20 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 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 90 78 89 78 91 79 91 79 89 Temp 90 82 78 85 89 82 78 86 91 83 79 86 91 83 79 85 89 82 Dewpt 75 75 74 73 74 75 76 75 76 75 76 76 76 75 76 76 76 73 PWind dir E E E E E E E E E Wind char BZ GN BZ BZ BZ BZ BZ BZ BZ Avg clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 40 20 20 20 10 20 20 20 20 Rain shwrs C S S S S S S S S S S S S S S S S S $$