Area Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
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021 FOCA52 TJSJ 171831 AFMSJU Area Forecast Matrices National Weather Service San Juan PR 231 PM AST Mon Aug 17 2026 PRZ001-180800- San Juan and Vicinity- Including the cities of Bayamon, Carolina, Catano, Guaynabo, San Juan, Toa Alta, Toa Baja, and Trujillo Alto 231 PM AST Mon Aug 17 2026 Date 08/17/26 Tue 08/18/26 Wed 08/19/26 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 72 77 82 84 90 93 72 77 82 83 90 92 72 77 83 Temp 86 82 80 78 79 85 89 90 86 81 80 78 78 85 89 90 86 81 80 78 79 86 Dewpt 75 75 75 75 74 76 76 77 77 76 76 76 76 77 77 78 77 77 76 76 76 77 RH 70 79 85 91 85 75 66 66 75 85 88 94 94 77 68 68 75 88 88 94 91 75 Wind dir E E E E SE E E E E E E E SE SE E SE SE SE SE SE SE E Wind spd 12 5 4 4 4 5 13 14 12 8 6 6 5 6 9 13 9 6 6 5 6 10 Wind gust 25 24 Clouds FW FW FW SC FW FW SC SC B1 FW SC SC SC B1 B1 SC SC B1 B1 B1 B1 SC PoP 12hr 20 40 40 50 50 QPF 12hr 0.01 0.19-0.56 0.16-0.35 0.24-0.41 0.09-0.26 Snow 12hr MM MM MM Rain shwrs IS IS IS IS IS IS IS IS SC IS IS SC SC SC IS IS SC SC SC SC SC Tstms IS IS IS IS IS Heat index 95 88 84 80 81 94100103 97 89 84 80 81 96102104 98 89 84 80 82 97 Max heat 110 92 100 112 111 93 102 111 110 95 103 Date 08/20 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 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 90 78 90 78 90 78 90 Temp 91 82 79 85 90 82 79 85 90 82 79 85 90 82 79 85 90 82 Dewpt 76 75 74 75 75 75 75 75 75 75 75 76 77 76 76 77 70 72 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 FW FW SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 30 0 30 30 10 30 30 30 30 Rain shwrs SC SC IS SC SC IS IS IS IS IS IS IS IS IS IS IS IS Tstms IS $$ PRZ002-180800- Northeast- Including the cities of Ceiba, Canovanas, Fajardo, Humacao, Loiza, Luquillo, Naguabo, and Rio Grande 231 PM AST Mon Aug 17 2026 Date 08/17/26 Tue 08/18/26 Wed 08/19/26 Thu AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 66 77 82 75 88 93 66 77 82 75 87 92 66 78 83 Temp 85 81 79 78 78 84 87 88 85 81 79 78 78 84 87 87 84 81 79 78 79 84 Dewpt 73 74 74 74 74 74 74 75 75 75 75 75 75 75 75 76 75 75 75 75 75 75 RH 67 79 85 88 88 72 65 66 72 82 88 91 91 74 68 70 74 82 88 91 88 74 Wind dir E E E E E E E E E E E E E SE SE SE SE SE E E E E Wind spd 10 6 6 6 8 10 12 12 11 9 9 8 8 8 10 11 9 8 9 9 9 13 Wind gust 17 23 19 19 18 19 19 24 Clouds SC SC SC SC SC SC SC SC SC FW SC B1 B2 B2 B2 B1 B1 B2 B2 B2 B2 B2 PoP 12hr 20 30 60 60 60 QPF 12hr 0.02 0.08-0.52 0.33-0.49 0.34-0.50 0.25 Snow 12hr MM MM MM Rain shwrs IS IS IS IS IS IS IS IS SC IS IS SC SC SC SC SC SC NM NM NM NM NM Tstms IS IS IS IS IS IS IS IS IS IS Heat index 91 86 83 80 81 91 96 97 92 86 83 80 81 91 97 98 93 87 84 81 82 92 Max heat 102 91 97 105 104 93 98 106 105 94 99 Date 08/20 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 88 78 88 78 87 78 88 78 88 Temp 88 81 79 84 88 81 78 84 87 81 78 84 88 81 78 84 88 81 Dewpt 75 74 73 74 74 74 73 74 73 73 74 74 75 75 75 75 72 72 PWind dir E E E E E E E E E Wind char GN GN GN GN GN GN GN GN GN Avg clouds B1 SC SC SC SC SC B1 B1 B1 B1 B1 B1 SC SC SC B1 B1 SC PoP 12hr 60 30 40 40 40 40 30 40 40 Rain shwrs NM IS IS IS IS SC SC SC SC SC SC SC SC SC SC SC SC IS Tstms IS $$ PRZ003-180800- Southeast- Including the cities of Arroyo, Guayama, Maunabo, Patillas, Salinas, and Yabucoa 231 PM AST Mon Aug 17 2026 Date 08/17/26 Tue 08/18/26 Wed 08/19/26 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 68 77 82 79 89 93 69 77 82 77 87 92 69 77 83 Temp 85 81 79 78 78 84 88 89 85 81 79 78 78 83 86 87 84 81 79 78 78 84 Dewpt 73 73 74 74 74 74 74 75 75 75 75 75 75 76 76 77 76 75 75 75 75 76 RH 67 77 85 88 88 72 63 64 72 82 88 91 91 80 72 72 77 82 88 91 91 77 Wind dir E NE NE NE NE E E E E NE NE NE E E SE SE SE E E E E E Wind spd 11 8 6 6 6 9 13 13 10 8 6 6 6 6 9 9 8 6 8 8 8 12 Wind gust 25 25 29 23 23 Clouds FW FW FW SC FW FW SC SC SC FW SC SC B1 B1 B1 SC SC SC SC SC SC B1 PoP 12hr 20 10 40 40 50 QPF 12hr 0.01 0.07-0.29 0.21-0.47 0.23-0.44 0.04-0.22 Snow 12hr MM MM MM Rain shwrs IS IS IS IS IS IS IS IS IS IS SC SC SC SC SC SC IS IS IS IS SC Tstms IS IS IS IS IS IS Heat index 92 85 83 80 92 98 99 94 86 83 80 81 92 98 99 93 86 83 80 81 93 Max heat 106 92 101 110 108 93 101 109 108 93 102 Date 08/20 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 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 89 77 88 77 88 77 88 Temp 88 81 78 84 89 81 78 84 88 81 78 84 88 81 78 84 88 81 Dewpt 75 74 74 74 74 74 74 74 74 73 74 75 75 75 75 74 71 71 PWind dir E E E NE E E E E E Wind char GN GN GN GN GN GN GN GN GN Avg clouds B1 SC SC SC SC SC B1 B1 SC SC SC SC SC SC SC SC SC FW PoP 12hr 50 20 40 40 30 10 30 30 30 Rain shwrs SC IS IS IS IS SC SC SC SC IS IS IS IS IS IS SC SC Tstms IS $$ PRZ004-180800- Eastern Interior- Including the cities of Aguas Buenas, Caguas, Cayey, Cidra, Comerio, Gurabo, Juncos, Las Piedras, and San Lorenzo 231 PM AST Mon Aug 17 2026 Date 08/17/26 Tue 08/18/26 Wed 08/19/26 Thu AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 68 74 77 77 88 93 69 74 78 76 86 92 69 74 78 Temp 83 78 76 75 75 82 87 88 83 79 77 75 75 82 85 86 83 78 76 75 75 82 Dewpt 72 72 73 72 72 74 73 73 74 74 74 74 74 75 75 75 75 74 74 74 74 75 RH 70 82 90 90 90 77 63 61 74 85 90 97 97 79 72 70 77 88 94 97 97 79 Wind dir E E E E E E E E E E E E E E SE SE SE SE SE E E E Wind spd 10 4 2 2 3 6 11 11 10 4 3 3 3 5 9 10 8 4 5 4 5 10 Clouds FW FW FW SC FW FW SC SC SC FW SC SC B1 B1 B1 SC SC B1 B1 B1 B1 B1 PoP 12hr 20 10 40 40 40 QPF 12hr 0.01 0.07-0.35 0.16-0.41 0.26-0.45 0.06-0.26 Snow 12hr MM MM MM Rain shwrs IS IS IS IS IS IS IS IS IS IS IS SC SC SC IS IS SC SC SC SC SC Tstms IS IS IS Heat index 89 80 88 94 96 90 81 88 95 96 90 81 89 Max heat 103 87 99 106 105 89 99 108 106 89 101 Date 08/20 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 87 74 87 74 87 74 87 74 87 Temp 87 79 75 82 87 79 75 82 87 78 75 82 87 79 75 82 87 79 Dewpt 74 73 72 73 72 73 72 73 72 72 72 74 74 74 74 75 68 70 PWind dir E E E E E E E E E Wind char GN LT GN LT GN LT GN LT GN Avg clouds B1 SC SC SC SC SC B1 B1 B1 SC SC SC SC SC SC SC SC SC PoP 12hr 40 10 40 40 30 20 20 40 40 Rain shwrs SC IS IS IS IS SC SC SC SC IS IS IS IS IS IS SC IS IS Tstms IS $$ PRZ005-180800- North Central- Including the cities of Arecibo, Barceloneta, Dorado, Florida, Manati, Vega Alta, and Vega Baja 231 PM AST Mon Aug 17 2026 Date 08/17/26 Tue 08/18/26 Wed 08/19/26 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 73 76 82 84 90 93 73 75 82 84 89 92 72 75 83 Temp 85 80 78 76 77 84 89 90 85 80 78 76 77 84 88 89 85 80 78 76 77 85 Dewpt 76 75 75 74 74 76 77 77 77 77 76 75 74 77 78 79 79 77 76 75 74 77 RH 75 85 91 94 90 77 68 66 77 91 94 97 90 80 72 73 82 91 94 97 90 77 Wind dir NE E E SE SE E E NE NE E E E E E E E SE SE SE SE SE E Wind spd 13 9 5 4 4 4 12 17 14 12 9 6 6 6 10 11 5 4 5 5 5 9 Wind gust 24 29 27 24 21 Clouds FW CL CL SC CL CL FW SC SC FW SC SC SC SC SC B1 B1 B1 B1 B1 B1 FW PoP 12hr 10 20 20 50 40 QPF 12hr 0 0.08-0.47 0.11-0.18 0.25-1.14 0.08 Snow 12hr MM MM MM Rain shwrs IS IS IS IS IS IS IS IS IS SC SC SC SC SC SC Tstms IS IS Heat index 95 86 80 93101104 97 86 94103105 97 85 96 Max heat 110 92 100 112 111 93 102 111 110 95 103 Date 08/20 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 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 75 90 76 90 76 90 76 90 Temp 91 81 76 85 90 81 77 85 90 81 77 85 90 81 77 85 90 81 Dewpt 78 75 74 76 76 75 74 76 76 75 74 76 77 76 76 77 73 72 PWind dir E E E E E E E E E Wind char GN GN BZ GN BZ GN GN GN BZ Avg clouds SC SC FW FW SC SC FW FW FW SC FW FW SC SC FW FW SC SC PoP 12hr 20 0 20 5 10 0 20 0 20 Rain shwrs IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS $$ PRZ006-180800- Central Interior- Including the cities of Aibonito, Barranquitas, Ciales, Coamo, Corozal, Jayuya, Morovis, Naranjito, Orocovis, and Villalba 231 PM AST Mon Aug 17 2026 Date 08/17/26 Tue 08/18/26 Wed 08/19/26 Thu AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 63 72 77 75 85 93 63 72 77 75 84 91 63 72 77 Temp 81 77 74 73 73 80 84 85 81 77 75 73 73 79 83 84 80 76 74 73 73 80 Dewpt 71 71 72 71 71 72 72 72 73 73 73 72 72 74 74 75 74 73 73 72 72 74 RH 72 82 93 93 93 77 67 65 77 87 94 97 97 85 74 74 82 90 97 97 97 82 Wind dir E E E E E E E E E NE E E E E SE SE SE SE SE E E E Wind spd 10 5 2 2 3 4 9 10 8 5 4 3 3 4 8 9 6 4 4 4 4 8 Wind gust 23 25 29 21 Clouds SC CL CL FW CL CL FW SC B1 FW SC SC SC SC SC B1 B1 SC SC SC SC FW PoP 12hr 5 40 20 50 30 QPF 12hr 0 0.18-0.55 0.11-0.25 0.22-1.12 0.02-0.10 Snow 12hr MM MM MM Rain shwrs IS IS IS SC IS IS IS IS IS SC SC IS IS IS IS IS Tstms IS IS IS Heat index 86 84 91 92 86 83 90 91 85 85 Max heat 105 86 98 109 108 87 98 109 108 87 100 Date 08/20 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 85 72 85 72 85 72 85 73 85 Temp 85 76 73 80 85 77 73 80 85 77 73 80 85 77 74 80 85 77 Dewpt 72 71 71 72 70 71 72 72 70 71 71 72 73 72 73 73 66 68 PWind dir E E E E E E E E E Wind char GN LT GN LT GN LT GN LT GN Avg clouds SC SC FW FW SC SC SC SC SC SC SC SC SC SC FW SC SC SC PoP 12hr 20 0 20 20 20 10 20 10 30 Rain shwrs IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS $$ PRZ007-180800- Ponce and Vicinity- Including the cities of Guayanilla, Juana Diaz, Yauco, Penuelas, Ponce, and Santa Isabel 231 PM AST Mon Aug 17 2026 Date 08/17/26 Tue 08/18/26 Wed 08/19/26 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 62 75 82 75 89 93 63 76 82 75 87 92 63 76 83 Temp 85 80 78 76 76 84 88 89 85 80 78 76 77 83 86 87 84 80 78 77 77 84 Dewpt 73 73 71 71 70 71 73 74 75 74 73 72 72 73 75 76 76 74 73 72 72 74 RH 67 79 79 85 82 65 61 61 72 82 85 87 85 72 70 70 77 82 85 85 85 72 Wind dir SE E NE NE NE E SE SE SE E NE NE E E SE SE SE E E E E E Wind spd 9 6 5 4 4 3 11 13 9 5 4 3 4 5 10 10 8 5 6 5 5 10 Wind gust 26 25 31 25 23 24 19 24 Clouds SC FW CL FW CL CL FW SC B1 FW SC SC SC SC SC B1 B1 SC SC SC SC SC PoP 12hr 5 40 20 40 10 QPF 12hr 0 0.07-0.55 0.11-0.25 0.19-0.97 0.02 Snow 12hr MM MM MM Rain shwrs IS IS SC IS IS IS IS IS SC SC IS IS IS IS IS Tstms IS IS Heat index 92 83 80 89 96 98 93 85 81 89 96 98 92 84 81 90 Max heat 108 91 96 109 108 91 97 109 108 93 98 Date 08/20 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 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 75 89 76 89 76 89 76 89 Temp 89 80 76 84 89 80 77 84 89 80 77 84 89 80 77 84 89 80 Dewpt 74 73 70 71 72 72 71 71 72 72 71 72 74 74 72 72 71 70 PWind dir E E E NE 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 SC FW FW FW FW SC SC PoP 12hr 10 0 5 10 20 20 5 0 10 Rain shwrs IS IS IS IS IS IS IS IS IS IS IS IS IS $$ PRZ008-180800- Northwest- Including the cities of Aguadilla, Camuy, Hatillo, Isabela, and Quebradillas 231 PM AST Mon Aug 17 2026 Date 08/17/26 Tue 08/18/26 Wed 08/19/26 Thu AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 70 74 82 84 88 93 70 74 82 84 87 92 69 74 83 Temp 84 79 77 75 76 83 87 88 84 79 77 75 75 82 87 87 83 78 76 75 75 83 Dewpt 75 75 74 73 72 74 75 76 76 76 75 74 73 75 77 78 77 76 75 74 73 75 RH 74 88 90 94 87 74 68 68 77 91 94 97 94 79 72 75 82 94 97 97 94 77 Wind dir NE E E E E E NE NE NE E E E E E E E SE SE SE SE E E Wind spd 13 11 9 6 6 5 10 12 10 12 11 9 9 8 6 4 3 3 4 4 5 6 Wind gust 19 26 20 23 24 17 Clouds SC FW CL SC CL CL CL SC SC FW SC SC SC SC SC B2 B2 B1 B1 B1 B1 FW PoP 12hr 5 20 10 60 30 QPF 12hr 0 0.09-0.49 0.11 0.73-1.15 0.06 Snow 12hr MM MM MM Rain shwrs IS IS IS IS IS IS IS IS IS NM NM SC SC SC SC Tstms IS IS Heat index 92 81 89 97 99 93 81 90 99101 93 80 91 Max heat 106 92 97 110 108 91 97 111 110 93 98 Date 08/20 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 89 74 88 74 88 74 88 75 88 Temp 89 79 75 83 88 79 75 83 88 79 75 83 88 79 76 83 88 79 Dewpt 77 75 72 74 75 75 73 74 75 74 73 74 76 76 74 76 74 73 PWind dir E E E E E E E E E Wind char GN GN BZ GN BZ GN GN GN BZ Avg clouds SC SC FW FW SC SC FW FW SC SC SC SC SC B1 SC SC SC SC PoP 12hr 30 0 20 0 40 10 50 20 40 Rain shwrs SC SC IS IS SC SC IS IS SC SC IS IS SC SC Tstms IS $$ PRZ009-180800- Western Interior- Including the cities of Adjuntas, Lares, Las Marias, Maricao, Sabana Grande, San Sebastian, and Utuado 231 PM AST Mon Aug 17 2026 Date 08/17/26 Tue 08/18/26 Wed 08/19/26 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 65 72 75 75 86 93 65 72 76 75 85 92 65 72 76 Temp 82 77 74 73 73 81 85 86 82 77 74 73 73 80 84 85 81 76 74 73 73 81 Dewpt 73 73 72 71 70 72 72 74 74 74 73 71 71 73 75 76 75 74 73 72 71 73 RH 74 87 93 93 90 74 65 68 77 90 97 93 93 79 74 75 82 94 97 97 93 77 Wind dir NE E E E E E E E E NE E E E E SE SE SE SE SE SE E E Wind spd 6 6 5 3 3 3 5 5 3 4 4 3 4 4 5 3 3 3 4 4 4 5 Wind gust 23 25 23 24 20 Clouds B2 FW CL FW CL CL CL SC B1 FW SC SC SC SC SC B2 B2 SC SC SC SC FW PoP 12hr 5 50 20 60 20 QPF 12hr 0 0.25-0.55 0.10-0.16 0.37-1.16 0.04 Snow 12hr MM MM MM Rain shwrs NM IS IS SC SC IS IS IS IS IS NM NM IS IS IS IS Tstms IS IS IS Heat index 87 84 92 94 88 84 92 95 86 85 Max heat 107 85 96 110 109 88 97 111 110 87 99 Date 08/20 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 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 86 71 86 72 86 72 86 72 86 Temp 86 76 72 81 86 77 73 81 86 76 73 81 86 77 73 81 86 77 Dewpt 74 73 70 71 72 72 71 71 72 72 71 72 74 73 72 73 70 70 PWind dir E E E E E E E E E Wind char LT LT LT LT LT LT LT LT GN Avg clouds SC SC FW FW SC SC FW FW SC B1 SC SC SC SC SC SC SC B1 PoP 12hr 40 0 30 0 50 20 40 10 40 Rain shwrs SC SC IS IS IS SC SC IS IS SC SC IS IS SC SC Tstms IS IS IS IS $$ PRZ010-180800- Mayaguez and Vicinity- Including the cities of Aguada, Anasco, Hormigueros, Mayaguez, Moca, Rincon, and San German 231 PM AST Mon Aug 17 2026 Date 08/17/26 Tue 08/18/26 Wed 08/19/26 Thu AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 67 75 82 78 91 93 68 75 82 77 90 92 68 75 83 Temp 86 80 78 76 76 84 90 91 86 80 78 76 77 84 89 90 85 80 78 76 77 85 Dewpt 76 76 75 73 72 74 76 77 77 77 76 74 73 76 78 79 78 77 76 74 73 76 RH 72 88 91 90 87 72 64 64 75 91 94 94 87 77 70 70 80 91 94 94 87 75 Wind dir NE E E E E E E W E E E E E E SE SE SE SE SE E E E Wind spd 9 10 10 6 6 5 5 6 3 9 9 6 6 6 5 5 5 5 8 6 6 6 Wind gust 21 24 24 20 18 16 18 19 25 17 18 17 19 18 17 19 24 24 24 21 Clouds B1 SC FW FW CL CL FW SC B1 FW SC SC SC SC SC B2 B2 SC SC SC SC FW PoP 12hr 10 40 20 60 20 QPF 12hr 0 0.01-0.56 0.15 0.07-1.15 0.02-0.07 Snow 12hr MM MM MM Rain shwrs SC IS SC SC IS IS IS IS IS NM NM IS IS IS IS Tstms IS IS IS Heat index 96 84 93101104 97 86 93103105 97 86 80 95 Max heat 111 91 101 112 111 91 100 111 110 93 102 Date 08/20 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 91 74 91 75 90 75 91 75 91 Temp 91 80 75 84 91 80 76 84 90 80 76 85 91 81 76 85 91 81 Dewpt 78 76 72 74 76 75 73 75 76 75 73 75 78 76 74 76 74 73 PWind dir E E E E E E E E E Wind char LT GN LT LT LT LT LT LT GN Avg clouds SC B1 SC SC SC SC SC SC SC B1 B1 SC SC SC SC SC SC B1 PoP 12hr 50 5 30 10 50 30 30 20 50 Rain shwrs SC SC IS IS SC SC IS IS SC SC SC SC SC SC SC SC SC SC Tstms IS IS IS IS IS IS IS $$ PRZ011-180800- Southwest- Including the cities of Cabo Rojo, Guanica, and Lajas 231 PM AST Mon Aug 17 2026 Date 08/17/26 Tue 08/18/26 Wed 08/19/26 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 72 75 82 84 92 93 73 76 82 84 91 92 73 76 83 Temp 87 80 78 76 76 85 91 92 87 81 79 77 77 85 90 91 86 81 79 77 78 86 Dewpt 76 76 75 73 71 73 75 77 77 77 76 74 72 75 78 78 78 77 76 74 73 75 RH 70 88 91 90 85 67 60 62 72 88 91 90 85 72 68 66 77 88 91 90 85 70 Wind dir E E E E NE E SE SE SE E E E E E SE SE SE E E E E E Wind spd 5 6 6 3 4 3 12 12 4 5 4 5 6 10 13 14 12 10 10 11 10 12 Wind gust 27 31 23 27 29 26 23 24 25 23 26 Clouds SC FW FW FW CL CL FW SC SC FW SC SC SC SC SC B1 B1 FW FW FW FW SC PoP 12hr 0 30 20 30 10 QPF 12hr 0 0.06-0.46 0.16-0.22 0.20-0.85 0.02 Snow 12hr MM MM MM Rain shwrs IS IS IS IS IS IS IS IS IS SC SC IS IS IS IS IS Tstms IS IS Heat index 97 86 92102106 99 88 81 94105107 99 88 81 95 Max heat 109 92 95 110 110 91 97 111 110 93 98 Date 08/20 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 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 76 92 75 91 75 92 76 92 Temp 92 81 76 86 92 81 76 85 91 81 76 86 92 81 77 86 92 81 Dewpt 77 76 72 73 76 76 72 73 76 76 72 74 77 77 74 73 74 73 PWind dir E E E E E E E E E Wind char BZ GN GN LT GN GN GN GN GN Avg clouds SC SC FW FW FW SC SC SC SC SC SC SC FW FW FW FW FW SC PoP 12hr 20 0 10 10 30 30 0 0 10 Rain shwrs IS IS IS IS IS IS IS IS IS SC SC IS IS $$ PRZ012-180800- Culebra- Including the city of Culebra 231 PM AST Mon Aug 17 2026 Date 08/17/26 Tue 08/18/26 Wed 08/19/26 Thu AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 81 84 88 93 81 84 88 92 81 Temp 86 83 82 81 82 85 87 88 86 83 82 81 81 85 87 88 86 83 83 82 82 86 Dewpt 76 76 76 76 75 77 77 77 77 77 77 77 76 77 77 77 77 77 77 77 76 77 RH 72 80 82 85 79 77 72 70 75 82 85 88 85 77 72 70 75 82 82 85 82 75 Wind dir E E E E E E E E E E E E E E SE SE SE E E E E E Wind spd 12 13 14 16 14 16 14 13 13 16 17 17 16 14 13 12 11 13 14 17 20 20 Clouds FW SC SC SC SC SC SC SC SC SC SC B1 B2 B2 B2 SC SC B2 B2 B2 B2 SC PoP 12hr 20 30 60 60 60 QPF 12hr 0.02 0.31-0.37 0.51 0.41 0.14 Snow 12hr MM MM MM Rain shwrs IS IS IS IS IS SC IS SC IS IS SC NM NM NM SC SC NM NM NM NM IS Tstms IS IS IS IS IS IS IS IS Heat index 95 91 90 88 88 95 99 99 96 91 90 87 87 96 99100 97 92 91 89 89 96 Max heat 105 95 100 106 105 96 102 108 107 97 102 Date 08/20 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 88 81 88 81 88 81 88 81 88 Temp 88 84 82 85 88 83 81 85 88 83 82 85 88 84 82 85 88 84 Dewpt 77 76 75 76 76 76 75 76 75 75 76 76 77 77 77 78 74 74 PWind dir E E E E E E E E E Wind char BZ BZ BZ BZ BZ BZ BZ BZ BZ Avg clouds SC SC SC SC SC SC B1 SC SC B1 SC SC SC SC SC SC B1 SC PoP 12hr 30 30 40 40 40 30 30 40 40 Rain shwrs IS SC SC SC IS SC SC SC SC SC SC IS SC SC IS SC SC IS $$ PRZ013-180800- Vieques- Including the city of Vieques 231 PM AST Mon Aug 17 2026 Date 08/17/26 Tue 08/18/26 Wed 08/19/26 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 84 88 92 80 84 89 92 81 Temp 86 83 82 81 81 85 88 88 86 83 82 81 81 85 88 89 86 83 82 81 82 86 Dewpt 74 74 74 75 74 75 74 74 75 75 76 76 75 76 75 75 75 75 75 75 75 76 RH 68 74 77 82 79 72 63 63 70 77 82 85 82 75 66 64 70 77 79 82 79 72 Wind dir E E E E E E E E E E E E E SE SE SE SE E E E E E Wind spd 12 12 14 14 14 16 14 13 13 14 17 17 16 13 12 12 11 12 14 17 19 19 Clouds SC SC SC SC SC SC SC SC CL SC SC B2 B2 B2 B2 SC SC B2 B2 B2 B2 SC PoP 12hr 20 30 60 60 60 QPF 12hr 0.03 0.19 0.51-0.57 0.41-0.47 0.13-0.21 Snow 12hr MM MM MM Rain shwrs IS IS IS IS IS IS SC IS IS IS NM NM NM NM SC SC NM NM NM NM SC Tstms IS IS IS IS IS IS IS IS Heat index 94 90 88 86 87 94 97 98 95 90 89 86 87 95 98 98 95 91 89 87 88 95 Max heat 100 91 98 103 102 92 99 103 103 93 100 Date 08/20 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 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 89 81 89 81 89 81 89 Temp 89 84 81 86 89 83 81 86 89 83 81 86 89 83 81 86 89 83 Dewpt 74 74 74 75 74 74 74 74 73 74 75 75 74 75 76 76 73 74 PWind dir E E E E E E E E E Wind char BZ BZ BZ BZ BZ BZ BZ BZ BZ Avg clouds SC SC SC SC SC SC B1 B1 SC B1 SC SC SC SC SC SC SC SC PoP 12hr 30 30 40 40 40 20 30 40 40 Rain shwrs IS SC SC SC IS SC SC SC SC SC IS IS SC SC IS SC SC IS $$ VIZ001-180800- St.Thomas...St. John...and Adjacent Islands- Including the cities of Anna`s Retreat, Charlotte Amalie, Charlotte Amalie East, Charlotte Amalie West, and Cruz Bay 231 PM AST Mon Aug 17 2026 Date 08/17/26 Tue 08/18/26 Wed 08/19/26 Thu AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 74 80 82 84 87 93 73 80 82 84 87 92 75 81 83 Temp 85 82 81 80 81 84 86 87 85 82 81 80 81 84 86 87 85 83 82 81 81 85 Dewpt 74 74 75 75 75 75 75 74 75 76 76 76 76 76 76 75 75 76 76 76 76 76 RH 70 77 82 85 82 74 70 65 72 82 85 88 85 77 72 68 72 80 82 85 85 75 Wind dir E E E E E E E E NE E E E E SE SE SE SE E E E E E Wind spd 12 12 14 16 13 17 16 13 13 16 17 17 16 14 13 11 12 14 16 17 21 20 Clouds CL SC SC SC SC SC SC SC FW SC SC B2 B2 B2 B2 SC SC B1 B1 B1 B1 FW PoP 12hr 20 30 60 60 50 QPF 12hr 0.02 0.10-0.31 0.51-0.57 0.39 0.10 Snow 12hr MM MM MM Rain shwrs IS IS IS IS IS SC IS IS IS SC NM NM NM NM SC SC SC SC SC SC Tstms IS IS IS IS Heat index 92 89 87 85 86 93 95 96 93 89 87 85 86 93 96 96 93 90 88 87 87 94 Max heat 104 94 100 106 105 93 100 105 104 96 101 Date 08/20 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 87 80 87 80 87 80 87 80 87 Temp 87 83 81 84 87 83 80 84 87 82 81 84 87 83 81 84 87 83 Dewpt 74 75 75 75 74 75 75 74 73 74 75 75 75 76 76 76 73 73 PWind dir E E E E E E E E E Wind char BZ BZ BZ BZ BZ BZ BZ BZ BZ Avg clouds FW SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 10 30 30 20 40 20 30 20 30 Rain shwrs IS IS IS SC SC IS IS IS SC SC IS IS IS IS IS IS IS SC $$ VIZ002-180800- St Croix- Including the cities of Christiansted, Frederiksted, Frederiksted Southeast, and Grove Place 231 PM AST Mon Aug 17 2026 Date 08/17/26 Tue 08/18/26 Wed 08/19/26 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 84 88 93 80 84 88 92 77 80 83 Temp 85 83 82 81 81 85 87 88 85 82 81 80 81 85 87 88 86 83 82 81 81 85 Dewpt 75 76 76 76 76 76 76 76 76 77 77 76 76 76 76 76 76 76 77 76 76 76 RH 72 80 82 85 85 75 70 68 75 85 88 88 85 75 70 68 72 80 85 85 85 75 Wind dir E NE E E E E E E E E E E E SE SE SE E E E E E E Wind spd 13 11 14 16 13 16 16 14 14 13 13 12 11 13 12 12 11 12 13 16 18 20 Clouds CL SC SC SC SC CL SC SC SC SC B2 B2 B2 B1 B1 SC SC B1 B1 B1 B1 FW PoP 12hr 20 20 60 50 40 QPF 12hr 0.02 0.06-0.22 0.60 0.35 0.08 Snow 12hr MM MM MM Rain shwrs IS IS IS IS IS IS IS IS SC NM NM SC SC SC SC SC SC SC SC Tstms IS IS IS IS IS Heat index 95 90 88 86 87 94 98 99 95 91 89 86 87 95 98 99 95 91 89 87 88 95 Max heat 106 94 101 109 106 94 100 107 107 94 101 Date 08/20 Fri 08/21/26 Sat 08/22/26 Sun 08/23/26 Mon 08/24/26 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 80 88 80 88 80 88 80 88 Temp 88 83 81 85 88 83 81 85 88 83 81 85 88 83 81 85 88 83 Dewpt 76 75 75 75 75 75 75 75 75 75 75 76 76 76 76 77 72 74 PWind dir E E E E E E E E E Wind char BZ BZ BZ BZ BZ BZ BZ BZ BZ Avg clouds FW SC FW FW SC SC SC SC SC SC FW FW SC SC SC SC SC SC PoP 12hr 10 10 20 20 30 0 30 20 30 Rain shwrs IS IS IS IS IS IS IS IS SC SC SC IS IS IS SC $$