Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
042 FOCA52 TJSJ 312103 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 503 PM AST Sun Aug 31 2025 PRZ001-010800- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 503 PM AST Sun Aug 31 2025 Date 08/31/25 Mon 09/01/25 Tue 09/02/25 Wed 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 92 79 90 79 Temp 83 81 80 79 87 91 92 86 83 81 80 79 85 89 90 85 82 81 80 79 85 Dewpt 75 76 75 74 75 76 76 75 75 76 76 75 76 76 77 76 76 76 75 75 75 RH 77 85 85 85 68 62 60 70 77 85 88 88 75 66 66 75 82 85 85 88 72 Wind dir E E SE SE E E E E E E SE SE SE E E E SE SE SE SE E Wind spd 8 6 5 5 6 11 14 12 9 8 8 6 8 12 14 12 8 8 6 6 8 Clouds SC SC SC SC SC B2 B1 SC CL SC B1 B2 B1 B1 B2 B2 SC SC SC SC B1 PoP 12hr 30 50 50 50 40 QPF 12hr 0.17 0.34 0.15 0.20 0.07 Rain shwrs C C C C C C C S C C C C C C C C C C C C Tstms S S S Heat index 90 87 84 83 96102104 96 90 88 84 83 95101102 95 90 87 84 83 94 Max heat 98 89 96 104 103 89 95 103 102 89 94 Date 09/03 Thu 09/04/25 Fri 09/05/25 Sat 09/06/25 Sun 09/07/25 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 89 79 89 79 90 79 90 Temp 90 82 80 85 89 82 80 85 89 82 80 85 90 82 80 85 90 82 Dewpt 75 75 74 75 76 75 75 76 76 76 76 76 77 76 76 75 76 74 PWind dir E E E E E E E E E Wind char GN LT GN LT GN LT GN GN GN Avg clouds B1 B1 SC SC SC SC SC SC B1 B1 SC SC SC B1 SC SC SC SC PoP 12hr 40 30 30 30 40 20 40 30 30 Rain shwrs C C S C C S S C C C S S C C C C C C Tstms S S S S $$ PRZ002-010800- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 503 PM AST Sun Aug 31 2025 Date 08/31/25 Mon 09/01/25 Tue 09/02/25 Wed AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 79 90 79 90 78 Temp 82 81 80 79 85 89 90 85 82 81 80 79 85 89 90 85 82 80 79 78 85 Dewpt 76 76 76 76 77 78 77 77 76 78 77 76 78 78 77 78 77 77 77 77 77 RH 82 85 88 91 77 70 66 77 82 91 91 91 80 70 66 80 85 91 94 97 77 Wind dir E E E E E SE SE SE E E E E E SE SE E E E E E E Wind spd 8 8 6 6 8 10 10 8 9 9 9 9 10 10 10 8 9 10 9 10 12 Clouds B1 SC B2 B1 B2 B2 B1 SC SC SC B1 B2 B2 B2 B1 B1 B2 B2 B2 B2 B2 PoP 12hr 60 50 50 50 50 QPF 12hr 0.29 0.40 0.16 0.19 0.10 Rain shwrs C C L C C C C C S C C C C C C C C C C C C Tstms S S S Heat index 90 87 84 84 96103103 96 90 89 85 84 97103103 96 89 86 95 Max heat 98 89 96 104 102 89 97 104 103 88 95 Date 09/03 Thu 09/04/25 Fri 09/05/25 Sat 09/06/25 Sun 09/07/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 90 79 89 79 89 80 90 81 90 Temp 90 82 80 85 89 82 80 85 89 83 80 86 90 84 81 86 90 83 Dewpt 76 76 76 77 77 76 76 77 77 77 77 78 78 77 77 77 77 74 PWind dir E E E E E E E E E Wind char GN GN GN GN GN GN GN GN GN Avg clouds B1 SC SC SC SC SC SC SC B1 B1 B1 B1 SC B1 B2 B2 B1 SC PoP 12hr 50 30 30 30 40 40 50 50 50 Rain shwrs C C S C C C C C C C C C C C C C C C Tstms S S S S $$ PRZ007-010800- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 503 PM AST Sun Aug 31 2025 Date 08/31/25 Mon 09/01/25 Tue 09/02/25 Wed 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 77 89 77 Temp 82 80 79 78 85 89 90 84 81 79 78 77 84 88 89 84 81 79 78 77 84 Dewpt 72 72 71 70 70 73 74 74 74 74 73 72 73 73 74 74 74 74 73 73 73 RH 72 77 77 76 61 59 60 72 79 85 85 85 70 61 61 72 79 85 85 87 70 Wind dir E NE NE NE E SE SE SE E NE NE NE E E SE SE E E E E E Wind spd 4 3 3 4 4 11 9 8 6 5 5 6 6 11 10 9 8 6 5 5 5 Clouds SC SC SC SC SC SC SC SC CL CL FW CL FW FW SC SC SC SC SC SC SC PoP 12hr 20 30 5 20 20 QPF 12hr 0.06 0.17 0 0.06 0.02 Rain shwrs S S S S C S S S S S S S S Heat index 86 84 89 97 99 92 86 83 90 95 98 91 86 90 Max heat 93 85 89 99 98 85 90 98 97 84 90 Date 09/03 Thu 09/04/25 Fri 09/05/25 Sat 09/06/25 Sun 09/07/25 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 77 88 77 88 77 89 77 89 Temp 89 81 78 83 88 80 78 83 88 80 78 84 89 81 78 84 89 81 Dewpt 73 73 72 70 74 72 69 71 73 74 71 71 74 74 72 72 72 74 PWind dir E NE E NE E E E E E Wind char GN LT GN LT GN LT GN LT GN Avg clouds SC SC SC FW FW SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 20 10 20 10 20 5 10 20 40 Rain shwrs S S S S S S S S S S S S S S S S C C Tstms S S $$ PRZ008-010800- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 503 PM AST Sun Aug 31 2025 Date 08/31/25 Mon 09/01/25 Tue 09/02/25 Wed AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 79 88 77 88 77 Temp 82 80 79 79 84 87 88 83 80 79 78 77 83 87 88 83 80 79 78 77 83 Dewpt 75 76 75 74 75 75 77 75 76 76 76 74 75 76 77 75 76 76 75 74 75 RH 79 88 88 85 74 68 70 77 88 91 94 90 77 70 70 77 88 91 91 90 77 Wind dir E E E E E NE NE E E SE E E E E NE E E E E E E Wind spd 10 8 9 10 8 3 9 6 8 6 4 5 8 4 6 6 1 6 6 6 5 Clouds B2 SC SC SC FW SC B2 B2 SC SC CL SC FW FW B2 B2 SC SC SC SC FW PoP 12hr 50 60 20 60 10 QPF 12hr 0.12 1.12 0.03 0.81 0.01 Rain shwrs C S S S L C S S S S S L L S S S S Tstms S S S S S Heat index 88 86 84 83 92 97 99 91 86 91 98 99 91 86 91 Max heat 93 87 92 99 98 84 91 100 98 84 91 Date 09/03 Thu 09/04/25 Fri 09/05/25 Sat 09/06/25 Sun 09/07/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 88 77 88 77 88 77 88 77 88 Temp 88 80 78 83 88 80 78 83 88 80 78 83 88 80 78 83 88 80 Dewpt 76 75 75 75 76 75 75 75 77 76 76 76 77 76 76 75 76 75 PWind dir E E E E E E E E E Wind char LT LT GN GN GN GN GN GN GN Avg clouds SC B1 SC SC SC B1 SC SC SC B1 SC SC SC SC SC SC SC B1 PoP 12hr 60 10 50 10 50 5 60 10 60 Rain shwrs L L S S C C S S C C S S L L S S L L Tstms S S S S S S S S S S $$ PRZ010-010800- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 503 PM AST Sun Aug 31 2025 Date 08/31/25 Mon 09/01/25 Tue 09/02/25 Wed 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 93 75 93 74 Temp 83 80 79 78 87 92 93 85 80 78 76 76 85 91 93 85 80 77 75 75 85 Dewpt 77 76 76 74 76 78 79 77 76 76 75 74 76 78 79 78 77 76 75 74 76 RH 82 88 91 88 70 64 64 77 88 94 97 94 75 66 64 80 91 97100 97 75 Wind dir E E E E E N N NE NE E E E E SE E E E E E E E Wind spd 8 3 5 4 5 2 3 6 5 4 5 4 3 2 2 8 2 6 5 4 3 Clouds B2 SC SC SC FW SC B2 B2 SC CL CL CL FW FW B2 B2 FW FW FW FW FW PoP 12hr 50 60 30 60 5 QPF 12hr 0.10 1.13 0.04 0.81 0.01 Rain shwrs C C L C C L L Tstms S S S S S Heat index 91 86 97106110 96 86 95107110 96 85 95 Max heat 102 89 97 110 108 84 95 110 108 95 Date 09/03 Thu 09/04/25 Fri 09/05/25 Sat 09/06/25 Sun 09/07/25 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 74 93 75 93 75 93 75 93 Temp 93 80 75 85 93 80 76 85 93 80 76 85 93 80 76 85 93 80 Dewpt 78 76 74 75 78 76 75 76 79 77 76 76 79 77 76 76 79 74 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 SC FW SC B1 SC FW FW SC CL CL SC B1 SC SC SC B1 PoP 12hr 60 10 50 10 50 0 60 10 60 Rain shwrs L L S S C C S S C C L L S S L L Tstms S S S S S S S S S S $$ VIZ001-010800- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 503 PM AST Sun Aug 31 2025 Date 08/31/25 Mon 09/01/25 Tue 09/02/25 Wed AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 81 92 80 92 80 Temp 84 83 82 81 87 91 92 87 84 82 81 80 87 91 92 87 84 82 81 80 87 Dewpt 76 76 76 77 77 77 77 77 77 78 78 77 78 78 77 78 77 77 77 77 77 RH 77 80 82 88 72 64 62 72 80 88 91 91 75 66 62 75 80 85 88 91 72 Wind dir E E E E E SE SE E E E E E E E SE E E E E E E Wind spd 12 12 11 11 12 12 11 11 12 14 13 14 14 14 12 12 13 14 14 16 17 Clouds SC B1 B1 SC B1 B1 SC SC SC SC B1 B2 SC SC SC SC SC SC SC SC SC PoP 12hr 40 40 50 10 20 QPF 12hr 0.20 0.20 0.10 0.04 0.03 Rain shwrs C C C C C C S S S S C C S S S S S S S S S Heat index 93 91 89 88 99105106 99 93 91 88 87100105106 99 93 90 88 87 99 Max heat 104 92 99 106 105 92 100 106 105 92 99 Date 09/03 Thu 09/04/25 Fri 09/05/25 Sat 09/06/25 Sun 09/07/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 92 80 92 80 92 81 92 80 90 Temp 92 84 81 87 92 84 81 87 92 84 82 87 92 84 81 86 90 84 Dewpt 76 76 77 77 77 76 77 78 77 78 79 78 78 77 77 77 77 74 PWind dir E E E E E E E E E Wind char BZ GN GN GN BZ BZ BZ BZ GN Avg clouds SC SC SC SC SC SC SC SC SC B1 SC SC SC B1 B1 B1 SC SC PoP 12hr 20 20 20 20 40 30 40 40 40 Rain shwrs S S S S S S S S C C C C C C C C C C Tstms S S S $$ VIZ002-010800- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 503 PM AST Sun Aug 31 2025 Date 08/31/25 Mon 09/01/25 Tue 09/02/25 Wed 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 79 91 78 Temp 82 80 79 78 85 89 90 85 82 81 80 79 86 90 91 85 82 80 79 78 86 Dewpt 76 76 76 76 77 77 77 77 76 77 77 76 77 77 77 77 77 76 76 76 76 RH 82 88 91 94 77 68 66 77 82 88 91 91 75 66 64 77 85 88 91 94 72 Wind dir E E E E E E E E E E E E E E SE E E E E E E Wind spd 9 10 10 10 12 13 11 10 10 11 11 12 14 14 12 11 10 12 11 12 14 Clouds SC SC B1 SC B1 B1 SC SC SC SC B1 B2 SC SC SC SC SC SC SC SC FW PoP 12hr 40 40 50 10 10 QPF 12hr 0.14 0.22 0.10 0.04 0.01 Rain shwrs S S C S C C S S S S C C S S S S S S S S Heat index 89 85 95101103 95 90 88 85 84 97102104 96 90 86 95 Max heat 96 87 95 103 102 89 97 104 103 88 95 Date 09/03 Thu 09/04/25 Fri 09/05/25 Sat 09/06/25 Sun 09/07/25 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 91 78 91 78 91 79 91 79 90 Temp 91 82 79 86 91 82 79 86 91 83 80 86 91 83 80 85 90 82 Dewpt 75 75 75 77 76 76 76 77 76 77 77 78 77 77 76 77 76 74 PWind dir E E E E E E E E E Wind char GN GN GN GN GN GN BZ GN GN Avg clouds FW SC SC SC SC SC SC SC SC B1 SC SC SC SC SC SC SC SC PoP 12hr 20 20 30 30 40 30 30 30 40 Rain shwrs S S S S S C C C C C S C C C C C C C $$