Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
581 FOCA52 TJSJ 282103 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 503 PM AST Thu Aug 28 2025 PRZ001-290800- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 503 PM AST Thu Aug 28 2025 Date 08/28/25 Fri 08/29/25 Sat 08/30/25 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 90 80 91 79 Temp 84 82 81 81 86 89 90 87 83 82 81 81 87 90 91 87 83 81 80 80 87 Dewpt 75 76 76 75 76 77 77 76 76 76 76 75 76 76 76 75 76 75 75 75 75 RH 74 82 85 82 72 68 66 70 80 82 85 82 70 64 62 68 80 82 85 85 68 Wind dir SE SE SE SE E E E E E E E E E E E E E E E E E Wind spd 8 5 6 6 5 11 12 12 9 8 5 8 9 11 16 13 9 9 6 8 9 Clouds SC SC SC SC B1 SC B2 OV SC B1 SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 40 70 40 10 20 QPF 12hr 0.13 1.20 0.08 0.02 0.06 Rain shwrs S C C C C C C L S C S S S S S S S S S S S Tstms S S Heat index 92 90 87 87 96102103 97 92 89 86 87 97103104 97 91 87 84 85 97 Max heat 98 91 96 103 102 91 97 104 102 89 97 Date 08/31 Mon 09/01/25 Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 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 75 75 76 76 75 76 76 76 75 76 76 76 75 75 77 75 PWind dir E E E SE E SE E E E Wind char GN LT GN LT GN LT GN LT GN Avg clouds SC SC SC SC B1 SC SC SC SC SC SC B1 SC SC SC SC SC SC PoP 12hr 20 30 40 40 40 40 40 30 30 Rain shwrs S S S C C C S C C C C C C S S C C S Tstms S S $$ PRZ002-290800- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 503 PM AST Thu Aug 28 2025 Date 08/28/25 Fri 08/29/25 Sat 08/30/25 Sun AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 81 90 80 90 80 Temp 84 83 82 82 87 89 90 87 83 82 81 81 86 89 90 87 83 82 81 81 86 Dewpt 77 77 77 77 78 78 77 78 77 77 77 77 77 77 77 78 76 77 77 76 77 RH 80 82 85 85 75 70 66 75 82 85 88 88 75 68 66 75 80 85 88 85 75 Wind dir SE SE E E E E E E E E E E E E E E E E E E E Wind spd 6 8 8 9 9 10 10 10 9 9 9 9 9 11 11 10 8 9 8 9 11 Clouds SC SC SC B1 B1 SC SC SC B1 B1 B1 B1 B1 B1 SC SC SC SC B1 B1 B1 PoP 12hr 40 40 40 40 40 QPF 12hr 0.16 0.37 0.21 0.07 0.12 Rain shwrs C C C C C C S S C C C C C C S S C C C C C Heat index 94 91 89 90 99104103100 93 90 87 88 97103103 99 92 90 87 87 97 Max heat 100 93 99 104 103 92 97 103 102 91 97 Date 08/31 Mon 09/01/25 Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 90 80 91 80 90 80 90 80 90 Temp 90 83 81 86 91 83 81 86 90 83 81 86 90 83 81 86 90 83 Dewpt 76 76 76 78 77 76 77 77 77 76 77 78 77 76 77 77 77 76 PWind dir E E E E E E E E E Wind char GN GN GN GN GN GN GN GN GN Avg clouds SC SC SC B1 B1 B1 SC SC B1 SC B2 B2 B1 SC SC SC SC SC PoP 12hr 40 50 50 50 50 50 50 30 30 Rain shwrs C C C C C C S C C C C C C S S C C C Tstms S S $$ PRZ007-290800- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 503 PM AST Thu Aug 28 2025 Date 08/28/25 Fri 08/29/25 Sat 08/30/25 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 90 76 90 77 Temp 81 79 78 78 85 89 90 86 81 79 77 77 85 89 90 86 81 79 78 78 85 Dewpt 73 73 73 72 73 73 74 75 75 74 73 72 73 72 74 75 75 74 73 73 73 RH 77 82 85 82 67 59 60 70 82 85 87 85 67 57 60 70 82 85 85 85 67 Wind dir E NE NE NE E SE SE SE E NE NE NE E SE SE E E NE NE NE E Wind spd 6 5 4 3 4 9 10 8 6 4 4 3 3 12 14 9 4 3 3 4 3 Wind gust 25 Clouds SC SC SC FW SC SC FW SC SC CL SC SC SC SC SC SC FW FW SC SC SC PoP 12hr 30 20 5 20 5 QPF 12hr 0.07 0.15 0.03 0.26 0.02 Rain shwrs S C S S S S S S S S S S S S S S S Heat index 86 83 92 97 99 94 86 91 97 99 95 87 83 92 Max heat 93 85 92 99 99 84 91 99 99 86 92 Date 08/31 Mon 09/01/25 Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 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 73 74 73 73 74 74 73 73 73 73 73 74 74 74 71 71 73 69 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 SC SC SC SC FW FW FW SC SC SC SC SC SC FW FW SC PoP 12hr 20 20 20 5 20 20 20 10 20 Rain shwrs S S S S S S S S S S S S S S S S $$ PRZ008-290800- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 503 PM AST Thu Aug 28 2025 Date 08/28/25 Fri 08/29/25 Sat 08/30/25 Sun AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 76 87 76 88 77 Temp 80 78 77 77 83 86 87 84 80 78 77 77 83 87 88 85 81 79 78 78 84 Dewpt 76 76 76 74 75 76 77 76 76 76 76 75 76 76 77 75 75 76 76 74 75 RH 88 94 97 90 77 72 72 77 88 94 97 94 80 70 70 72 82 91 94 88 74 Wind dir E SE E E E NE NE E E E E E E E NE E E E E E E Wind spd 3 3 4 3 2 3 6 8 10 5 8 10 10 5 9 8 11 13 10 11 11 Clouds SC CL CL FW FW CL B2 OV SC SC FW FW CL CL B1 B1 B1 B1 FW FW FW PoP 12hr 20 70 10 40 40 QPF 12hr 0.03 1.38 0.02 0.77 0.06 Rain shwrs S S L L S S C C C C S S S Tstms S S S S Heat index 85 90 97 99 92 84 92 99100 93 86 83 92 Max heat 93 84 90 99 97 92 100 99 85 92 Date 08/31 Mon 09/01/25 Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 88 76 88 77 88 77 88 77 88 Temp 88 80 77 83 88 80 78 83 88 80 78 83 88 80 78 83 88 80 Dewpt 77 75 75 75 77 76 75 75 77 76 76 75 76 76 76 76 77 76 PWind dir E E E E E E E E E Wind char LT GN LT LT LT LT GN LT GN Avg clouds SC SC SC FW SC SC CL FW SC SC SC FW SC SC SC SC SC B1 PoP 12hr 30 10 50 5 30 10 40 10 50 Rain shwrs C C S S C C S C C S S C C S S C C Tstms S S S S $$ PRZ010-290800- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 503 PM AST Thu Aug 28 2025 Date 08/28/25 Fri 08/29/25 Sat 08/30/25 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 93 77 92 75 Temp 81 79 77 78 87 92 93 88 82 80 78 79 86 91 92 87 81 78 76 77 86 Dewpt 77 77 76 74 76 78 79 78 77 76 76 74 77 78 79 78 77 76 75 75 76 RH 88 94 97 88 70 64 64 72 85 88 94 85 75 66 66 75 88 94 97 94 72 Wind dir NE E E E NE W N NE E E E E E S N NE E E E E E Wind spd 3 4 5 4 2 4 4 3 3 2 3 4 4 2 5 5 6 4 4 5 4 Clouds FW CL CL FW CL CL B2 B2 SC CL FW FW CL CL OV OV B1 B1 FW FW FW PoP 12hr 5 60 5 70 40 QPF 12hr 0.01 1.21 0.02 1.52 0.05 Rain shwrs C L S L L C C Tstms S S S S Heat index 89 83 97107110101 91 86 98107108100 88 95 Max heat 100 87 97 110 109 89 98 108 108 85 95 Date 08/31 Mon 09/01/25 Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 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 75 93 75 93 75 93 75 93 Temp 92 80 76 85 93 80 76 85 93 80 76 85 93 80 76 85 93 80 Dewpt 78 77 76 76 79 77 75 76 79 76 75 76 79 77 75 76 78 77 PWind dir NE 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 CL FW SC B1 FW FW SC B1 SC FW SC B1 PoP 12hr 60 10 60 5 60 5 50 10 50 Rain shwrs L L S S L L L L C C S S C C Tstms S S S S S S S S $$ VIZ001-290800- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 503 PM AST Thu Aug 28 2025 Date 08/28/25 Fri 08/29/25 Sat 08/30/25 Sun AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 80 90 81 91 81 Temp 83 82 81 81 86 89 90 87 84 83 82 82 87 90 91 88 84 83 82 82 88 Dewpt 77 77 77 77 78 77 77 77 78 77 77 77 77 77 77 77 77 77 77 76 77 RH 82 85 88 88 77 68 66 72 82 82 85 85 72 66 64 70 80 82 85 82 70 Wind dir E E E E E E E E E E E E E E E E E E E E E Wind spd 12 13 13 13 14 12 12 12 14 16 13 14 14 13 11 12 12 13 13 14 16 Clouds SC SC SC SC SC SC FW SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 30 30 30 30 30 QPF 12hr 0.13 0.12 0.17 0.29 0.07 Rain shwrs S C C C C S S S C C C C C S S S S C C S Heat index 92 90 88 88 98103103 99 94 92 89 90 99104104 99 94 92 89 90100 Max heat 98 91 98 103 103 93 99 104 103 93 100 Date 08/31 Mon 09/01/25 Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 92 82 92 82 92 82 92 82 92 Temp 92 85 83 88 92 85 83 88 92 85 83 88 92 85 83 88 92 85 Dewpt 76 77 77 78 77 76 77 77 77 77 77 78 77 77 77 77 77 77 PWind dir E E E E E E E E E Wind char GN GN GN GN GN GN GN GN GN Avg clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 20 40 40 20 10 20 20 20 20 Rain shwrs S S S C C S S S S S S S S S S S S S $$ VIZ002-290800- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 503 PM AST Thu Aug 28 2025 Date 08/28/25 Fri 08/29/25 Sat 08/30/25 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 90 81 90 79 Temp 83 82 81 81 86 89 90 87 84 83 82 82 87 89 90 87 83 81 80 80 86 Dewpt 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 77 76 76 75 76 76 RH 82 85 88 88 75 68 66 72 80 82 85 85 72 68 66 72 80 85 85 88 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 9 10 10 11 12 12 12 12 12 13 13 12 13 13 11 12 11 12 11 12 13 Clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 30 30 30 30 30 QPF 12hr 0.13 0.58 0.13 0.34 0.06 Rain shwrs S C C C C S C S S C S S C C C C S S S S C Heat index 92 90 87 88 97102103 98 93 91 89 90 98103102 98 90 87 84 85 96 Max heat 99 91 97 103 102 92 98 103 102 89 96 Date 08/31 Mon 09/01/25 Tue 09/02/25 Wed 09/03/25 Thu 09/04/25 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 91 78 91 79 91 79 91 Temp 90 82 80 86 91 82 79 86 91 83 80 86 91 83 80 86 91 83 Dewpt 76 76 76 76 76 76 76 77 77 76 77 77 76 76 76 76 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 B1 SC SC SC SC SC SC SC FW FW SC SC SC SC SC PoP 12hr 30 40 40 30 10 10 20 20 30 Rain shwrs C C C C C C C C S S S S S S S S S C $$