Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
594 FOCA52 TJSJ 172103 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 503 PM AST Fri Oct 17 2025 PRZ001-180800- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 503 PM AST Fri Oct 17 2025 Date 10/17/25 Sat 10/18/25 Sun 10/19/25 Mon 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 79 87 79 Temp 82 81 80 79 85 89 90 85 82 81 80 79 83 86 87 83 81 80 80 79 85 Dewpt 75 75 75 74 75 76 77 76 76 76 75 75 76 76 75 75 75 75 75 75 75 RH 79 82 85 85 72 66 66 75 82 85 85 88 80 72 68 77 82 85 85 88 72 Wind dir W S S S S E E SE SW S SE SE E E E E E E E E E Wind spd 3 2 4 4 4 2 5 3 5 4 4 5 6 13 14 11 9 6 10 8 9 Clouds SC SC SC SC SC SC B1 B2 B2 B2 B2 B2 SC SC SC SC SC SC SC SC SC PoP 12hr 30 50 50 20 30 QPF 12hr 0.14 0.37 0.09 0.05 0.06 Rain shwrs C C S C S C C C C C C C S S S S S S S S C Tstms S S S S S Heat index 89 86 84 94100102 94 90 87 85 92 97 96 91 88 85 84 94 Max heat 94 88 94 102 101 89 92 97 96 87 94 Date 10/20 Tue 10/21/25 Wed 10/22/25 Thu 10/23/25 Fri 10/24/25 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 79 90 78 89 77 88 77 88 Temp 90 82 80 85 90 82 79 84 89 81 78 83 88 80 78 83 88 80 Dewpt 76 76 74 75 75 74 74 74 75 74 74 75 75 74 75 75 75 75 PWind dir E E E E E SE SE E SE Wind char GN GN GN GN GN GN GN GN GN Avg clouds B1 B1 FW FW FW FW CL FW SC SC SC SC SC SC SC SC SC B1 PoP 12hr 50 5 5 10 10 20 30 30 60 Rain shwrs C C S S S S S S S S C C C C L $$ PRZ002-180800- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 503 PM AST Fri Oct 17 2025 Date 10/17/25 Sat 10/18/25 Sun 10/19/25 Mon AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 76 87 78 86 79 Temp 79 78 77 76 82 86 87 83 81 80 79 78 82 85 86 83 81 80 79 79 84 Dewpt 76 75 75 75 78 77 77 77 77 76 76 76 78 78 76 76 76 76 76 77 78 RH 91 91 94 97 88 75 72 82 88 88 91 94 88 80 72 80 85 88 91 94 82 Wind dir SW SW SW SW S S S S SE E E E E E E E E E E E E Wind spd 9 3 3 5 6 6 8 5 5 5 6 9 11 12 12 10 9 10 11 11 13 Clouds B1 SC B1 B1 SC SC SC SC B2 B2 B2 B2 SC SC SC SC SC SC SC SC B1 PoP 12hr 40 50 50 30 40 QPF 12hr 0.18 0.15 0.09 0.06 0.09 Rain shwrs C C C C C C C C C C C C C C S S C C C C C Tstms S S S S S Heat index 84 91 98 98 91 87 84 91 97 96 91 88 86 84 94 Max heat 89 91 99 97 86 91 97 95 87 94 Date 10/20 Tue 10/21/25 Wed 10/22/25 Thu 10/23/25 Fri 10/24/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 88 78 88 78 87 77 87 76 87 Temp 88 81 79 84 88 81 79 83 87 80 78 83 87 79 77 82 87 79 Dewpt 78 76 75 77 76 75 75 76 76 76 75 77 77 76 75 77 77 76 PWind dir E E E E E E SE E SE Wind char GN GN GN GN GN GN GN GN GN Avg clouds SC SC SC SC FW FW CL FW SC SC SC SC SC B1 B1 B1 B2 B2 PoP 12hr 40 20 10 20 20 30 40 50 60 Rain shwrs C S S S S S S S S C C C C C C L $$ PRZ007-180800- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 503 PM AST Fri Oct 17 2025 Date 10/17/25 Sat 10/18/25 Sun 10/19/25 Mon 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 88 77 88 77 Temp 80 78 77 76 83 87 88 83 80 79 78 77 83 87 88 83 80 79 78 77 84 Dewpt 73 73 73 72 74 74 74 74 74 73 73 72 73 73 71 72 70 70 71 71 71 RH 79 85 87 87 74 65 63 74 82 82 85 85 72 63 57 70 72 74 79 82 65 Wind dir W N N N NE SE S E NE NE NE NE E SE SE E E NE NE NE NE Wind spd 2 2 2 3 3 6 6 5 4 4 4 6 8 12 11 9 6 6 5 5 5 Clouds B1 B1 B2 B1 B1 B2 SC B1 SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 50 50 20 20 10 QPF 12hr 0.22 0.20 0.04 0.06 0.02 Rain shwrs C C C C C C C C S S S S S S S S S S S S S Tstms S S S S Heat index 83 89 95 96 89 85 89 94 94 88 84 89 Max heat 88 89 97 95 84 89 95 93 83 89 Date 10/20 Tue 10/21/25 Wed 10/22/25 Thu 10/23/25 Fri 10/24/25 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 77 90 77 89 77 88 76 88 Temp 90 81 78 84 90 81 78 84 89 81 78 83 88 80 77 83 88 80 Dewpt 72 72 71 71 70 71 70 70 73 71 72 73 73 73 73 72 73 72 PWind dir E E E E E E E E E Wind char GN LT GN LT GN LT GN GN GN Avg clouds SC FW CL CL FW SC SC FW FW FW FW FW SC B1 SC B1 B1 B2 PoP 12hr 10 0 10 5 10 20 40 40 50 Rain shwrs S S S S S S S S S C C C C C C $$ PRZ008-180800- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 503 PM AST Fri Oct 17 2025 Date 10/17/25 Sat 10/18/25 Sun 10/19/25 Mon AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 76 85 75 84 76 Temp 79 78 77 76 81 84 85 80 78 77 76 75 80 83 84 80 78 77 77 76 83 Dewpt 75 75 73 72 75 76 76 75 75 75 74 72 75 76 77 76 76 75 73 73 75 RH 88 91 87 87 82 77 75 85 91 94 94 90 85 80 80 88 94 94 87 90 77 Wind dir S S SW S S N N E E E E E E NE NE E E E E E E Wind spd 9 8 6 6 5 1 3 4 8 6 4 5 5 5 9 11 14 11 10 9 12 Clouds B2 SC SC B1 SC SC B1 B2 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC PoP 12hr 60 60 40 30 10 QPF 12hr 0.16 0.69 0.07 0.07 0.02 Rain shwrs L C S C C S C L C C C C S S C C S S S S S Tstms S S S Heat index 83 87 93 94 85 85 92 93 86 90 Max heat 88 87 95 93 85 93 92 90 Date 10/20 Tue 10/21/25 Wed 10/22/25 Thu 10/23/25 Fri 10/24/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 88 76 88 75 87 75 86 74 86 Temp 88 80 77 83 88 79 76 82 87 79 76 81 86 78 75 81 86 78 Dewpt 77 75 74 75 76 74 73 74 75 74 73 74 76 74 73 74 75 75 PWind dir E E E E E E E E E Wind char BZ GN BZ GN BZ GN GN GN GN Avg clouds SC B1 CL CL SC SC CL CL FW SC FW FW SC B1 SC SC SC B1 PoP 12hr 60 0 50 0 40 10 60 20 40 Rain shwrs L L C C C C S L L S S C C Tstms S S $$ PRZ010-180800- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 503 PM AST Fri Oct 17 2025 Date 10/17/25 Sat 10/18/25 Sun 10/19/25 Mon 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 91 75 90 74 Temp 80 78 76 75 84 90 91 83 80 78 76 75 83 89 90 82 79 77 75 74 85 Dewpt 76 75 75 74 77 79 79 77 76 76 74 74 76 78 78 77 77 75 74 73 76 RH 88 91 97 97 80 70 68 82 88 94 94 97 80 70 68 85 94 94 97 97 75 Wind dir S S SE SE SE S S E NE E E E E NE N NE E E E E E Wind spd 6 4 5 5 6 5 6 2 8 4 3 4 3 1 4 9 4 5 2 5 5 Clouds SC SC SC B1 B1 SC B2 OV SC SC SC SC SC SC B2 B2 SC SC SC SC SC PoP 12hr 40 70 30 50 10 QPF 12hr 0.15 1.03 0.05 1.27 0.02 Rain shwrs C S S C C C C L C C C C S S C C S S S S S Tstms S S S S S S Heat index 84 94105107 92 85 92102104 90 94 Max heat 92 94 108 105 92 105 102 94 Date 10/20 Tue 10/21/25 Wed 10/22/25 Thu 10/23/25 Fri 10/24/25 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 93 75 93 74 92 75 91 74 91 Temp 93 80 76 85 93 80 75 84 92 80 76 84 91 79 75 84 91 79 Dewpt 78 76 74 75 77 75 73 75 77 75 73 75 77 75 74 76 77 75 PWind dir E E E E E E E E E Wind char LT LT LT LT LT LT LT GN GN Avg clouds SC B1 CL CL SC B1 FW FW SC B1 FW FW SC B1 SC SC SC B1 PoP 12hr 60 0 50 5 50 10 60 20 50 Rain shwrs L L C C S S C C S L L S S C C Tstms S S $$ VIZ001-180800- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 503 PM AST Fri Oct 17 2025 Date 10/17/25 Sat 10/18/25 Sun 10/19/25 Mon AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 80 90 80 87 82 Temp 83 82 81 80 86 89 90 85 83 82 81 80 84 86 87 85 84 83 82 82 86 Dewpt 77 78 77 77 78 79 77 77 77 78 77 77 78 78 77 77 77 78 77 78 78 RH 82 88 88 91 77 73 66 77 82 88 88 91 82 77 72 77 80 85 85 88 77 Wind dir S SW SW S S S S S SE E E E E E E E E E E E E Wind spd 16 11 9 9 9 8 6 5 9 10 11 13 14 16 14 14 16 18 17 18 18 Clouds B2 B1 SC B2 B2 B1 B1 SC B2 B2 B2 B2 SC SC SC SC SC SC SC SC B1 PoP 12hr 60 50 50 30 40 QPF 12hr 0.22 0.20 0.09 0.05 0.09 Rain shwrs L C C C C C C C C C C C S S S S C C C C C Tstms S S S S S S S Heat index 92 91 88 87 98104103 96 92 90 88 87 94 99 99 95 93 92 91 91 98 Max heat 97 91 98 104 102 91 94 99 98 93 98 Date 10/20 Tue 10/21/25 Wed 10/22/25 Thu 10/23/25 Fri 10/24/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 89 81 90 81 89 80 88 79 88 Temp 89 83 82 86 90 84 82 85 89 83 81 84 88 82 80 84 88 82 Dewpt 78 77 77 77 76 75 76 76 77 76 77 77 77 77 76 77 77 76 PWind dir E E E E E E SE E SE Wind char BZ BZ BZ BZ BZ BZ BZ BZ BZ Avg clouds SC FW SC SC SC SC SC SC SC SC SC SC SC SC SC B1 B2 B2 PoP 12hr 40 10 20 20 20 20 30 50 60 Rain shwrs C S S S S S S S S S S S S C C C L L $$ VIZ002-180800- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 503 PM AST Fri Oct 17 2025 Date 10/17/25 Sat 10/18/25 Sun 10/19/25 Mon 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 89 79 86 78 Temp 82 81 80 80 85 88 89 84 82 81 80 79 83 85 86 82 80 79 79 78 84 Dewpt 77 77 76 76 78 77 77 77 76 76 76 76 76 76 76 76 77 77 77 77 77 RH 85 88 88 88 80 70 68 80 82 85 88 91 80 75 72 82 91 94 94 97 80 Wind dir S S S S SE S S SE E E E E E E E E E E E E E Wind spd 10 8 6 6 10 9 6 9 9 9 10 11 13 16 14 13 16 16 16 16 18 Clouds B2 B1 B2 B1 B2 B2 B1 SC SC SC SC SC SC SC SC SC B1 B1 B1 B1 SC PoP 12hr 50 50 20 40 40 QPF 12hr 0.23 0.20 0.04 0.06 0.09 Rain shwrs C C C C C C C C S S S S S S S S C C C C C Tstms S S S S S Heat index 90 88 86 86 96101102 94 90 87 85 91 95 95 89 87 84 93 Max heat 93 89 96 102 100 89 91 96 95 86 93 Date 10/20 Tue 10/21/25 Wed 10/22/25 Thu 10/23/25 Fri 10/24/25 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 78 89 78 87 76 87 76 87 Temp 88 81 79 84 89 81 79 83 87 79 77 82 87 79 77 82 87 79 Dewpt 78 76 76 77 76 75 75 76 76 76 76 77 77 76 76 77 77 76 PWind dir E E E E E E SE E SE Wind char BZ BZ BZ BZ BZ GN GN BZ BZ Avg clouds SC FW SC SC SC FW SC SC SC FW SC SC SC B1 B2 B2 B2 B2 PoP 12hr 30 20 20 20 20 20 50 50 60 Rain shwrs C S S S S S S S S S S S C C C C L L $$