Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
144 FOCA52 TJSJ 292103 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 503 PM AST Fri Aug 29 2025 PRZ001-300800- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 503 PM AST Fri Aug 29 2025 Date 08/29/25 Sat 08/30/25 Sun 08/31/25 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 91 80 92 79 Temp 83 82 81 81 87 90 91 88 84 82 81 81 87 91 92 88 83 81 80 79 87 Dewpt 76 77 76 75 76 76 76 76 75 76 75 75 75 75 76 75 75 75 75 75 75 RH 80 85 85 82 70 64 62 68 74 82 82 82 68 60 60 66 77 82 85 88 68 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 8 6 6 6 8 12 14 12 9 8 5 8 8 12 13 12 9 6 5 6 6 Clouds SC B1 SC SC SC SC SC SC FW SC B1 B1 SC SC SC SC SC SC SC SC SC PoP 12hr 40 30 40 20 30 QPF 12hr 0.18 0.08 0.10 0.09 0.07 Rain shwrs S C S S C C S S S C C C S S S S S S S S C Tstms Heat index 92 90 86 87 98102103 99 92 89 87 87 96102105 98 90 87 85 96 Max heat 98 91 98 103 102 91 96 105 103 89 96 Date 09/01 Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 Fri 09/05/25 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 92 79 92 79 92 79 92 Temp 92 83 80 87 92 83 80 87 92 83 80 87 92 83 80 87 92 83 Dewpt 76 75 76 76 76 76 75 75 76 75 75 75 75 75 75 76 76 76 PWind dir E SE E SE E E E E E Wind char GN LT GN LT GN LT GN LT GN Avg clouds B1 SC SC SC B1 B1 SC B1 SC SC SC SC SC SC SC SC SC SC PoP 12hr 40 40 50 40 40 30 30 30 30 Rain shwrs C C S C C C C C C S S C C S S C C S Tstms S S S S $$ PRZ002-300800- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 503 PM AST Fri Aug 29 2025 Date 08/29/25 Sat 08/30/25 Sun 08/31/25 Mon AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 80 90 79 90 80 Temp 83 82 81 81 86 89 90 87 83 81 80 80 86 89 90 87 83 82 81 80 86 Dewpt 78 77 77 77 77 77 77 76 76 76 76 76 77 77 76 77 76 77 76 76 77 RH 85 85 88 88 75 68 66 70 80 85 88 88 75 68 64 72 80 85 85 88 75 Wind dir E E E E E E E E E E E E E E E E E E E E E Wind spd 9 9 8 8 9 11 10 9 9 9 6 9 9 11 10 9 8 9 8 8 9 Clouds B1 B1 B1 B1 B1 B1 SC SC FW SC B1 B1 B1 B1 SC SC SC SC SC SC B2 PoP 12hr 40 40 40 40 50 QPF 12hr 0.31 0.10 0.11 0.13 0.10 Rain shwrs C C C C C C S S C C C C C S S C C C C C Heat index 93 90 87 88 97102103 98 91 87 86 86 97102102 99 91 90 87 86 97 Max heat 100 92 97 103 102 89 97 103 102 90 97 Date 09/01 Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 Fri 09/05/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 90 80 90 80 90 78 90 79 90 Temp 90 83 81 86 90 83 81 86 90 82 79 85 90 82 80 85 90 83 Dewpt 77 76 76 77 77 76 77 77 77 76 76 77 77 75 77 77 76 77 PWind dir E E E E E E E E E Wind char GN GN GN GN GN GN GN GN GN Avg clouds B1 B1 SC SC B1 SC B2 B2 B1 SC SC SC SC SC SC SC B1 B1 PoP 12hr 50 50 50 50 50 30 30 30 40 Rain shwrs C C S C C C C C C S S C C C C C C C Tstms S S $$ PRZ007-300800- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 503 PM AST Fri Aug 29 2025 Date 08/29/25 Sat 08/30/25 Sun 08/31/25 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 78 90 76 90 78 Temp 81 79 77 79 85 89 90 86 81 79 77 77 85 89 90 86 82 80 79 78 85 Dewpt 75 74 73 73 76 78 78 79 76 75 74 72 75 77 78 78 77 75 74 73 75 RH 82 85 87 82 75 70 68 80 85 88 90 85 72 68 68 77 85 85 85 85 72 Wind dir E NE NE NE E SE SE E E NE NE NE NE E SE E E E NE E E Wind spd 5 4 3 3 3 12 12 8 4 3 4 4 3 12 11 9 4 4 3 4 4 Clouds SC CL SC FW SC FW SC SC CL SC CL CL SC SC SC SC SC SC SC SC SC PoP 12hr 10 10 10 20 20 QPF 12hr 0.03 0.02 0.01 0.12 0.04 Rain shwrs S S S S S S S S S S S S S S S Heat index 86 94103105100 87 94102105 98 90 85 94 Max heat 95 84 94 105 105 86 94 105 103 87 94 Date 09/01 Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 Fri 09/05/25 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 90 77 90 77 90 Temp 90 81 78 85 90 81 78 85 90 81 78 85 90 81 78 85 90 81 Dewpt 78 77 73 73 74 73 73 72 73 73 72 71 74 73 72 69 72 73 PWind dir E E E E E E E E E Wind char GN LT GN LT GN LT GN LT GN Avg clouds SC SC FW FW FW SC SC SC SC SC SC FW FW SC SC SC SC SC PoP 12hr 20 5 10 20 20 10 20 10 20 Rain shwrs S S S S S S S S S S S S S S S S $$ PRZ008-300800- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 503 PM AST Fri Aug 29 2025 Date 08/29/25 Sat 08/30/25 Sun 08/31/25 Mon AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 81 88 78 88 79 Temp 80 78 77 82 85 88 88 85 81 80 79 79 84 87 88 85 82 80 79 79 84 Dewpt 75 76 76 74 75 76 77 74 76 76 75 74 75 75 76 75 75 76 76 74 75 RH 85 94 97 77 72 68 70 70 85 88 88 85 74 68 68 72 79 88 91 85 74 Wind dir E E E E E E NE E E E E E E E NE NE E E E E E Wind spd 6 5 5 9 10 6 5 10 12 11 10 11 10 8 5 8 11 8 8 9 9 Clouds FW SC FW CL CL CL B1 B2 SC FW CL SC FW FW SC SC SC SC SC SC FW PoP 12hr 5 50 20 30 10 QPF 12hr 0.03 0.48 0.03 0.43 0.02 Rain shwrs S S C C S S S S C C S S S S Tstms S S Heat index 84 88 94 99100 93 87 86 92 96 99 94 89 86 92 Max heat 92 94 100 100 87 92 99 99 87 92 Date 09/01 Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 Fri 09/05/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 88 77 88 77 88 77 88 77 88 Temp 88 80 78 83 88 80 78 83 88 80 78 83 88 80 78 83 88 80 Dewpt 77 75 75 75 77 76 76 75 76 75 76 75 77 75 75 75 76 76 PWind dir E E E E E E E E E Wind char LT LT LT LT LT LT GN GN GN Avg clouds SC B1 CL FW SC B1 SC FW SC SC SC SC SC B1 SC SC SC SC PoP 12hr 60 5 60 10 40 10 50 10 30 Rain shwrs L L S L L S S C C S S C C S S C C Tstms S S S S S S S S $$ PRZ010-300800- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 503 PM AST Fri Aug 29 2025 Date 08/29/25 Sat 08/30/25 Sun 08/31/25 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 93 77 93 78 Temp 82 80 78 81 88 92 93 88 82 80 78 79 87 92 93 88 83 80 79 78 87 Dewpt 77 77 76 74 76 78 79 77 77 76 75 74 76 77 79 78 77 76 76 75 76 RH 85 91 94 79 68 64 64 70 85 88 91 85 70 62 64 72 82 88 91 91 70 Wind dir E E E E E SE W NE E E E E E E NW NE E E E E E Wind spd 4 3 3 4 3 2 3 4 6 3 5 5 4 2 3 5 5 6 5 4 3 Clouds FW CL FW CL CL CL B2 OV B1 CL CL CL FW FW B2 B2 SC SC SC SC FW PoP 12hr 5 70 40 60 10 QPF 12hr 0.02 1.11 0.03 1.01 0.02 Rain shwrs L L C L L S S S S Tstms S S S S Heat index 90 87 86 99107110100 90 86 98106110102 92 86 98 Max heat 100 89 99 110 107 88 98 110 109 90 98 Date 09/01 Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 Fri 09/05/25 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 75 93 74 93 75 93 Temp 93 80 76 85 93 80 76 85 93 80 75 85 93 80 76 85 93 80 Dewpt 79 77 76 76 79 77 75 76 78 77 75 77 79 76 74 76 78 77 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 FW SC B1 FW FW SC B1 SC FW SC B1 SC FW FW SC PoP 12hr 60 5 60 5 50 10 50 10 50 Rain shwrs L L L L C C S S C C S S C C Tstms S S S S S S S S S S $$ VIZ001-300800- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 503 PM AST Fri Aug 29 2025 Date 08/29/25 Sat 08/30/25 Sun 08/31/25 Mon AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 81 93 81 92 81 Temp 84 83 82 82 88 92 93 89 85 83 82 82 88 91 92 89 84 83 82 81 87 Dewpt 78 77 77 77 77 77 76 76 77 77 77 76 77 76 76 76 76 77 76 76 77 RH 82 82 85 85 70 62 58 66 77 82 85 82 70 62 60 66 77 82 82 85 72 Wind dir E E E E E E E E E E E E E E E E E E E E E Wind spd 13 16 13 14 13 13 11 12 13 13 12 13 13 13 12 11 12 12 12 11 12 Clouds SC SC SC B2 SC SC FW SC FW SC B1 SC SC SC SC SC SC SC SC SC B1 PoP 12hr 50 30 40 20 40 QPF 12hr 0.24 0.06 0.06 0.06 0.08 Rain shwrs S C C C C S S S S C S S S S S S S S S C Heat index 95 92 89 90100106106100 96 92 90 89100103105100 93 92 89 87 99 Max heat 99 93 100 106 106 94 100 105 103 93 99 Date 09/01 Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 Fri 09/05/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 92 82 92 82 92 82 92 82 92 Temp 92 85 83 88 92 85 83 88 92 85 83 88 92 85 83 88 92 85 Dewpt 77 77 77 77 77 77 77 77 77 77 77 77 76 76 77 77 76 77 PWind dir E E E E E E E E E Wind char GN GN GN GN GN GN BZ GN GN Avg clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC B1 PoP 12hr 40 20 10 20 20 20 20 20 40 Rain shwrs C S S S S S S S S S S S S S S S C C $$ VIZ002-300800- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 503 PM AST Fri Aug 29 2025 Date 08/29/25 Sat 08/30/25 Sun 08/31/25 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 79 90 78 Temp 84 83 82 81 86 89 90 87 83 81 80 80 86 89 90 86 82 80 79 78 85 Dewpt 77 77 77 76 77 77 77 76 76 76 76 75 76 76 76 76 76 76 76 76 77 RH 80 82 85 85 75 68 66 70 80 85 88 85 72 66 64 72 82 88 91 94 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 11 13 13 12 12 13 11 12 11 12 12 12 13 12 12 10 10 12 10 10 12 Clouds SC SC SC B2 SC SC SC SC CL FW CL SC SC SC SC SC SC SC SC SC B1 PoP 12hr 50 30 30 30 40 QPF 12hr 0.23 0.04 0.05 0.11 0.10 Rain shwrs S C S C C S S S S C C S S C C C C C Heat index 93 92 89 87 97102103 98 91 87 86 85 96100102 96 89 86 96 Max heat 99 93 97 103 102 89 96 102 100 87 96 Date 09/01 Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 Fri 09/05/25 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 91 79 91 79 91 79 91 Temp 90 82 79 86 91 83 80 86 91 83 80 86 91 83 80 86 91 83 Dewpt 77 76 76 76 77 76 76 77 77 76 76 76 75 75 76 77 76 76 PWind dir E E E E E E E E E Wind char GN GN GN GN GN GN GN GN GN Avg clouds SC SC SC SC SC SC SC FW FW SC SC SC SC SC SC SC SC B1 PoP 12hr 40 30 10 10 20 20 30 30 40 Rain shwrs C C C C S S S S S S S S S C C C C C $$