Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
043 FOCA52 TJSJ 182103 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 503 PM AST Mon Aug 18 2025 PRZ001-190800- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 503 PM AST Mon Aug 18 2025 Date 08/18/25 Tue 08/19/25 Wed 08/20/25 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 79 93 79 92 79 Temp 82 81 80 80 88 92 93 89 84 82 80 80 87 91 92 88 83 81 80 80 87 Dewpt 76 76 76 76 76 77 76 76 76 76 76 76 77 77 77 77 76 76 75 74 75 RH 82 85 88 88 68 62 58 66 77 82 88 88 72 64 62 70 80 85 85 82 68 Wind dir S SE SE SE SE SE SE SE SE SE SE E SE E E E E E E E E Wind spd 8 8 5 6 8 12 16 11 8 6 4 5 8 12 16 13 10 9 10 9 10 Clouds SC SC SC SC SC CL SC SC FW SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 30 30 30 30 20 QPF 12hr 0.12 0.06 0.11 0.11 0.02 Rain shwrs S S S C S S C S S S C C S S S S S S S Tstms Obvis H H H H H H H H H H H Heat index 90 87 84 86 99106106100 92 89 85 86 99105106100 92 88 84 85 97 Max heat 97 90 99 106 105 91 99 106 105 90 97 Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 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 79 90 78 90 78 91 79 91 Temp 92 83 80 86 90 82 79 85 90 82 79 86 91 83 80 86 91 83 Dewpt 75 75 76 76 77 77 76 76 76 76 76 76 77 76 77 76 76 76 PWind dir E NE NE NE SE SE SE E E Wind char GN GN GN GN GN GN GN GN GN Avg clouds SC SC SC SC B1 B1 B2 B2 B2 B1 SC SC B1 B1 SC SC SC SC PoP 12hr 30 40 60 60 60 30 60 20 30 Rain shwrs C C S C C L L L L L S C L L S S S C Tstms S S S S S S S $$ PRZ002-190800- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 503 PM AST Mon Aug 18 2025 Date 08/18/25 Tue 08/19/25 Wed 08/20/25 Thu AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 80 91 80 91 80 Temp 83 82 80 81 87 90 91 88 84 82 81 81 87 90 91 88 84 82 81 81 86 Dewpt 78 78 78 77 78 78 78 78 77 78 77 77 78 78 78 77 77 77 76 76 76 RH 85 88 94 88 75 68 66 72 80 88 88 88 75 68 66 70 80 85 85 85 72 Wind dir S S S SE SE SE SE SE SE SE SE SE SE SE E E E E E E E Wind spd 11 12 10 11 10 12 11 9 8 9 11 11 13 14 13 11 11 10 11 12 11 Clouds B1 SC B2 B1 B1 SC SC SC SC SC B1 B1 B2 B2 SC SC SC SC SC SC SC PoP 12hr 50 40 50 50 30 QPF 12hr 0.30 0.09 0.19 0.29 0.04 Rain shwrs C C C C C C S C S C C C C C C C S S S S C Tstms S Obvis H H H H H H Heat index 92 90 88 88100105106101 93 91 88 88100105106100 93 90 87 87 96 Max heat 99 91 100 106 106 92 100 106 105 92 96 Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 90 80 90 79 89 80 90 81 91 Temp 90 83 81 86 90 83 80 85 89 83 81 86 90 84 82 87 91 84 Dewpt 76 76 76 77 77 77 77 77 77 76 77 78 78 77 77 77 76 76 PWind dir E NE NE NE S SE SE E E Wind char GN GN GN GN GN GN GN GN GN Avg clouds SC SC SC B1 B1 B1 B2 B2 B2 B2 B1 B1 B1 B1 SC SC SC SC PoP 12hr 30 40 60 60 60 40 50 30 30 Rain shwrs C C C C C L L L L L C C C C C C C C Tstms S S S S S $$ PRZ007-190800- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 503 PM AST Mon Aug 18 2025 Date 08/18/25 Tue 08/19/25 Wed 08/20/25 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 88 77 90 76 Temp 80 79 78 79 84 87 88 85 81 79 78 78 85 89 90 86 81 79 77 77 85 Dewpt 78 77 76 76 78 80 79 78 78 75 75 75 77 80 79 79 78 75 73 72 74 RH 94 94 94 91 82 80 75 80 91 88 91 91 77 75 70 80 91 88 87 85 70 Wind dir E SE SE E E SE SE SE E E NE E E SE SE E E NE NE NE E Wind spd 8 8 8 9 9 10 9 8 8 6 6 6 9 12 11 10 8 6 5 4 6 Clouds B2 B1 B2 B1 SC SC CL SC FW SC SC SC SC SC FW FW FW FW FW FW FW PoP 12hr 60 20 30 30 5 QPF 12hr 0.35 0.05 0.09 0.09 0.01 Rain shwrs L C C C S S S S S S C C S S Tstms S S Obvis H H H H H H H H H H H H Heat index 88 84 95104103 96 89 83 96107106 99 89 92 Max heat 94 86 95 104 102 86 96 107 105 85 92 Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 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 76 90 77 87 77 89 77 90 Temp 90 81 77 85 90 81 78 83 87 80 78 84 89 81 78 85 90 81 Dewpt 78 76 73 75 79 77 75 77 79 77 74 77 79 77 74 76 77 73 PWind dir E NE E NE SE E E E E Wind char GN LT LT LT GN LT GN LT GN Avg clouds FW SC FW FW SC B2 B2 B2 B2 B1 SC SC SC B1 FW FW FW FW PoP 12hr 10 5 50 50 50 20 50 5 5 Rain shwrs S S S C C C C C C S S C C S S $$ PRZ008-190800- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 503 PM AST Mon Aug 18 2025 Date 08/18/25 Tue 08/19/25 Wed 08/20/25 Thu AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 77 90 77 90 76 Temp 80 79 78 78 85 89 90 86 81 79 78 78 85 89 90 86 81 79 77 77 83 Dewpt 76 76 76 76 76 77 77 76 76 76 75 74 75 77 77 77 77 77 75 74 74 RH 88 91 94 94 75 68 66 72 85 91 91 88 72 68 66 75 88 94 94 90 74 Wind dir S S SE SE SE SE N N S SE E E E E NE NE E E E E E Wind spd 14 11 12 8 9 9 5 5 3 4 4 3 5 3 9 6 3 3 11 11 10 Clouds B2 SC SC CL CL CL SC B2 SC CL CL CL CL CL B1 B1 FW FW FW FW FW PoP 12hr 50 60 10 40 5 QPF 12hr 0.12 0.60 0.01 0.20 0.01 Rain shwrs C S S C L S C C Tstms S S S S Obvis H H H H H H H H H H Heat index 86 95102103 96 88 84 94102103 97 88 90 Max heat 93 85 95 103 102 87 94 103 102 85 90 Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 88 77 88 77 87 76 89 77 88 Temp 88 81 78 84 88 81 78 83 87 80 77 84 89 81 78 84 88 81 Dewpt 76 76 75 76 77 76 76 77 76 75 76 76 76 75 76 76 76 76 PWind dir E E NE NE E SE SE E E Wind char GN GN GN GN BZ GN GN LT GN Avg clouds SC SC FW FW SC B1 SC SC B1 B1 SC SC SC B1 FW FW FW SC PoP 12hr 30 5 30 30 50 20 60 0 30 Rain shwrs C C C C C C C C S S L L C C Tstms S S $$ PRZ010-190800- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 503 PM AST Mon Aug 18 2025 Date 08/18/25 Tue 08/19/25 Wed 08/20/25 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 93 76 94 74 Temp 80 79 78 79 87 92 93 88 82 79 77 78 87 93 94 88 81 78 75 76 86 Dewpt 78 77 77 76 78 79 78 78 76 76 76 75 76 79 79 78 78 77 75 74 75 RH 94 94 97 91 75 66 62 72 82 91 97 91 70 64 62 72 91 97100 94 70 Wind dir S S S SE SE S S S SE E E E E SE SE NE E E E E E Wind spd 13 12 14 11 12 14 12 9 5 6 6 5 5 10 11 3 1 3 4 5 4 Clouds B2 B1 SC CL CL CL SC B1 CL CL CL CL FW FW B1 B1 FW FW FW FW FW PoP 12hr 60 40 0 40 5 QPF 12hr 0.18 0.40 0 0.20 0.01 Rain shwrs L C C S C C C Tstms S S S S Obvis H H H H H H H H H H H Heat index 88 100109109101 89 84 98110112101 89 95 Max heat 95 85 100 111 107 87 98 112 110 85 95 Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 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 93 75 93 76 91 76 93 76 93 Temp 93 81 76 86 93 82 77 85 91 81 77 87 93 82 77 87 93 80 Dewpt 78 76 74 76 79 77 76 77 79 76 76 76 78 77 75 76 78 76 PWind dir NE NE NE NE SE SE SE E E Wind char LT GN GN GN BZ GN GN LT LT Avg clouds SC SC FW FW SC B2 SC SC B1 B1 SC SC SC B1 CL CL SC SC PoP 12hr 40 5 60 30 50 20 60 0 50 Rain shwrs C C L L C C C C S S L L C C Tstms S S S S $$ VIZ001-190800- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 503 PM AST Mon Aug 18 2025 Date 08/18/25 Tue 08/19/25 Wed 08/20/25 Thu AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 83 92 82 92 81 Temp 85 84 83 84 89 91 92 89 85 84 83 83 88 91 92 89 85 83 82 82 88 Dewpt 78 78 78 77 77 78 77 77 77 78 79 78 78 78 77 77 77 77 76 76 76 RH 80 82 85 80 68 66 62 68 77 82 88 85 72 66 62 68 77 82 82 82 68 Wind dir SE SE SE SE SE SE SE SE SE E E E E E E E E E E E E Wind spd 14 14 14 12 14 14 14 13 14 17 18 18 18 18 18 16 14 17 18 18 16 Clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 20 20 30 30 30 QPF 12hr 0.04 0.06 0.14 0.10 0.04 Rain shwrs S S S S S S S S S C C C C C S S S S S S C Obvis H H H H H H H H H Heat index 97 95 94 94101107106102 96 95 93 93102107106101 95 92 89 90100 Max heat 102 97 101 107 105 95 102 107 105 94 100 Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 93 81 92 79 92 82 92 82 93 Temp 93 85 82 88 92 83 80 87 92 85 83 88 92 85 83 89 93 86 Dewpt 75 76 76 77 77 77 78 77 76 77 77 77 77 78 77 77 76 77 PWind dir E NE NE NE S SE SE E E Wind char BZ BZ BZ BZ BZ BZ BZ BZ BZ Avg clouds SC SC B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B1 SC SC SC SC SC PoP 12hr 40 50 60 60 60 50 50 30 30 Rain shwrs C C C C C L L L L L C C C C C C S C Tstms S S S S S $$ VIZ002-190800- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 503 PM AST Mon Aug 18 2025 Date 08/18/25 Tue 08/19/25 Wed 08/20/25 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 90 78 Temp 83 82 81 81 86 89 90 87 83 81 80 80 86 89 90 86 82 80 79 79 85 Dewpt 77 77 77 77 77 78 77 77 76 78 77 78 78 78 77 77 76 76 75 75 76 RH 82 85 88 88 75 70 66 72 80 91 91 94 77 70 66 75 82 88 88 88 75 Wind dir SE SE SE SE SE SE SE E E E E E E E E E E E E E E Wind spd 10 12 11 10 13 12 16 11 11 13 14 16 17 16 18 14 13 16 17 16 16 Clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC CL CL SC SC SC SC SC PoP 12hr 30 20 30 30 20 QPF 12hr 0.04 0.05 0.13 0.09 0.04 Rain shwrs C S S S S S S S S S C C C C S S S S S Obvis H H H H H H H H H H Heat index 92 90 87 88 97104103 98 90 89 85 88 98104103 98 89 86 83 95 Max heat 99 92 97 104 102 90 98 104 102 88 95 Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 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 90 77 90 79 90 79 91 Temp 90 82 79 85 90 81 78 85 90 83 80 86 90 83 80 86 91 82 Dewpt 75 76 76 77 77 77 76 77 76 76 77 77 77 77 77 76 76 76 PWind dir E NE NE E S SE E E E Wind char GN GN BZ GN BZ BZ BZ BZ BZ Avg clouds SC SC SC B1 B1 B1 B2 B2 B2 B2 B2 B2 B1 SC SC SC SC FW PoP 12hr 30 50 60 60 60 50 50 20 30 Rain shwrs S C C C C L L L L C C C C S S S S C Tstms S S S S $$