Area Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
932 FOCA52 TJSJ 181831 AFMSJU Area Forecast Matrices National Weather Service San Juan PR 231 PM AST Fri Sep 18 2026 PRZ001-190800- San Juan and Vicinity- Including the cities of Bayamon, Carolina, Catano, Guaynabo, San Juan, Toa Alta, Toa Baja, and Trujillo Alto 231 PM AST Fri Sep 18 2026 Date 09/18/26 Sat 09/19/26 Sun 09/20/26 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 73 78 83 83 90 93 73 77 83 83 90 93 73 77 83 Temp 84 81 80 79 78 85 89 90 85 81 79 78 77 85 89 90 85 81 79 78 77 85 Dewpt 76 75 76 75 74 77 77 77 77 77 76 75 75 76 77 77 77 76 76 75 74 76 RH 77 82 88 88 88 77 68 66 77 88 91 91 94 75 68 66 77 85 91 91 90 75 Wind dir E E E SE SE E E E E E SE SE SE SE E E SE SE SE SE SE SE Wind spd 11 8 6 5 4 4 10 13 11 6 5 4 4 6 10 12 10 6 4 4 4 8 Wind gust 21 24 21 Clouds SC FW B1 B1 SC SC FW SC B2 SC SC SC SC SC SC B1 B1 SC SC SC SC SC PoP 12hr 40 60 30 50 20 QPF 12hr 0.04-0.17 0.18-0.58 0.03-0.15 0.09-0.60 0.01-0.20 Snow 12hr MM MM MM Rain shwrs IS IS SC SC IS IS IS SC SC IS IS IS IS IS SC SC IS IS IS IS IS Tstms IS IS IS Heat index 94 87 84 80 95102104 95 87 83 95102104 95 87 82 95 Max heat 107 95 101 114 113 95 101 114 113 95 101 Date 09/21 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 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 77 90 77 90 77 90 77 90 Temp 91 81 78 85 90 81 78 84 90 81 77 84 90 81 78 85 90 81 Dewpt 77 76 75 77 77 76 75 76 77 76 75 77 77 76 76 77 72 73 PWind dir SE SE E SE E SE E SE SE Wind char GN LT GN LT GN LT GN LT GN Avg clouds SC SC SC SC SC SC FW FW SC SC SC SC SC SC SC SC SC B1 PoP 12hr 20 20 30 5 40 10 40 20 40 Rain shwrs IS IS IS IS SC SC IS IS IS SC IS IS SC SC IS IS SC SC $$ PRZ002-190800- Northeast- Including the cities of Ceiba, Canovanas, Fajardo, Humacao, Loiza, Luquillo, Naguabo, and Rio Grande 231 PM AST Fri Sep 18 2026 Date 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 68 78 83 75 88 93 67 77 83 75 88 93 67 77 83 Temp 83 81 79 78 78 84 87 88 83 80 79 78 77 83 87 88 83 81 79 78 77 84 Dewpt 74 74 74 74 74 75 75 74 75 74 74 74 74 74 74 74 74 74 74 74 74 75 RH 74 79 85 88 88 74 68 63 77 82 85 88 90 74 65 63 74 79 85 88 90 74 Wind dir E E E E E E E E E E E E E E E SE SE SE E E SE SE Wind spd 9 8 8 6 5 5 9 10 9 8 6 5 5 6 9 9 8 6 5 5 6 8 Wind gust 21 19 Clouds SC SC B2 B1 B1 B1 SC SC B1 SC B1 B1 B1 SC SC B1 B1 SC SC B1 B1 SC PoP 12hr 60 40 40 40 50 QPF 12hr 0.15-0.26 0.13-0.52 0.11-0.27 0.11-0.60 0.11-0.25 Snow 12hr MM MM MM Rain shwrs IS IS NM SC SC SC IS IS SC IS SC SC SC SC SC SC SC SC SC SC SC SC Tstms IS IS IS Heat index 90 85 83 80 80 91 96 97 91 85 82 80 91 96 96 90 85 83 80 91 Max heat 101 93 98 106 104 93 97 105 103 93 97 Date 09/21 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 88 77 88 77 88 77 87 78 88 Temp 88 81 78 84 88 80 78 83 88 80 78 83 87 81 78 84 88 81 Dewpt 74 74 74 75 75 74 74 74 75 75 74 75 74 74 74 75 72 74 PWind dir SE SE E E E E E SE SE Wind char GN LT GN LT GN LT GN GN GN Avg clouds SC SC SC SC SC SC SC SC SC SC SC SC B1 B1 SC SC SC B1 PoP 12hr 30 30 30 30 30 30 40 30 40 Rain shwrs IS IS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC $$ PRZ003-190800- Southeast- Including the cities of Arroyo, Guayama, Maunabo, Patillas, Salinas, and Yabucoa 231 PM AST Fri Sep 18 2026 Date 09/18/26 Sat 09/19/26 Sun 09/20/26 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 69 77 83 78 88 93 69 77 83 77 87 93 69 77 83 Temp 83 80 79 78 77 83 87 88 83 80 78 77 77 83 86 87 83 80 79 78 77 83 Dewpt 74 73 74 73 73 75 76 76 76 75 75 74 74 75 75 75 76 74 74 74 73 75 RH 74 79 85 85 87 77 70 68 80 85 91 90 90 77 70 68 80 82 85 88 87 77 Wind dir E E E E E E E E E E E E NE E SE SE SE E E E E E Wind spd 9 8 6 6 5 5 10 11 9 6 6 5 5 6 10 10 8 4 4 5 6 9 Wind gust 21 25 20 20 21 Clouds CL SC B1 SC B2 SC SC SC SC SC B1 B1 B1 SC SC FW FW SC SC B2 B2 SC PoP 12hr 60 20 50 30 50 QPF 12hr 0.09-0.28 0.03-0.16 0.14-0.31 0.02-0.20 0.17-0.25 Snow 12hr MM MM MM Rain shwrs IS SC IS NM IS IS IS IS IS SC SC SC SC SC IS IS IS IS SC SC SC Heat index 89 84 82 91 97 98 91 85 81 90 96 97 90 84 81 91 Max heat 103 92 101 109 108 94 100 108 107 93 100 Date 09/21 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 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 77 88 76 88 76 87 77 87 Temp 87 80 78 83 88 80 77 83 88 80 77 82 87 80 78 83 87 80 Dewpt 75 75 74 74 74 74 73 73 74 74 74 75 75 75 75 76 73 73 PWind dir SE 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 SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 30 20 30 30 20 20 30 30 30 Rain shwrs IS IS IS IS IS SC SC SC IS IS IS IS IS SC SC SC IS SC $$ PRZ004-190800- Eastern Interior- Including the cities of Aguas Buenas, Caguas, Cayey, Cidra, Comerio, Gurabo, Juncos, Las Piedras, and San Lorenzo 231 PM AST Fri Sep 18 2026 Date 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 69 74 77 77 87 93 69 74 77 77 87 93 69 74 77 Temp 81 78 76 75 74 82 86 87 81 78 76 75 74 81 86 87 81 78 76 75 74 81 Dewpt 73 73 73 72 72 74 74 74 74 74 73 73 72 74 74 74 74 73 73 72 72 74 RH 77 85 90 90 93 77 68 65 79 88 90 94 93 79 68 65 79 85 90 90 93 79 Wind dir E E E E E E E E E E E E E E E SE SE SE E E E SE Wind spd 9 4 3 3 3 4 9 10 8 4 3 3 3 5 9 9 8 3 3 3 4 6 Clouds SC FW B1 SC B1 SC SC SC B1 SC B1 B1 B1 SC SC SC SC SC SC B1 B1 SC PoP 12hr 50 40 40 30 50 QPF 12hr 0.04-0.24 0.06-0.58 0.05-0.26 0.03-0.60 0.05-0.25 Snow 12hr MM MM MM Rain shwrs IS IS SC IS SC IS IS IS SC IS SC SC SC IS IS IS IS IS IS SC SC IS Tstms IS Heat index 86 80 87 94 95 87 87 94 94 86 87 Max heat 100 86 99 108 107 87 98 108 106 87 99 Date 09/21 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 87 74 87 73 87 73 86 74 86 Temp 87 78 75 81 87 78 74 81 87 78 74 81 86 78 75 81 86 78 Dewpt 74 73 73 74 75 73 73 73 74 73 73 74 74 73 73 74 70 72 PWind dir SE SE E E E E SE SE SE Wind char GN LT GN LT GN LT LT LT GN Avg clouds SC SC SC SC SC SC SC SC SC SC SC SC SC B1 SC SC SC B1 PoP 12hr 20 20 30 30 20 20 40 30 40 Rain shwrs IS IS IS IS IS IS IS IS IS IS IS IS SC SC IS IS SC SC $$ PRZ005-190800- North Central- Including the cities of Arecibo, Barceloneta, Dorado, Florida, Manati, Vega Alta, and Vega Baja 231 PM AST Fri Sep 18 2026 Date 09/18/26 Sat 09/19/26 Sun 09/20/26 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 73 76 83 85 90 94 72 75 83 85 90 93 72 75 83 Temp 84 80 78 77 76 84 89 90 84 80 78 76 75 84 89 90 84 80 77 76 75 84 Dewpt 76 76 75 74 73 76 78 78 77 77 76 75 74 77 77 78 77 76 76 74 73 77 RH 77 88 91 90 90 77 70 68 80 91 94 97 97 80 68 68 80 88 97 94 94 80 Wind dir E E SE SE SE E E NE E SE SE SE SE E E NE E SE SE SE SE SE Wind spd 13 10 8 5 4 5 10 13 11 9 6 4 4 5 9 12 9 5 4 4 4 5 Wind gust 25 25 23 19 25 19 Clouds SC FW SC SC SC FW FW SC B1 SC SC FW SC SC SC B2 B2 SC SC FW FW SC PoP 12hr 30 40 30 50 10 QPF 12hr 0.03-0.10 0.04-0.57 0.02-0.07 0.07-1.03 0.01 Snow 12hr MM MM MM Rain shwrs IS IS IS IS IS IS SC SC IS IS IS IS IS SC SC IS IS IS Tstms IS IS Heat index 94 86 80 94103105 94 84 94102104 94 84 93 Max heat 107 94 101 115 113 95 100 114 113 95 100 Date 09/21 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 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 90 75 90 75 90 75 89 75 90 Temp 90 80 76 84 90 80 76 83 90 79 76 83 89 80 76 84 90 80 Dewpt 78 76 75 77 78 76 75 76 78 76 75 77 78 76 75 77 72 72 PWind dir E SE E SE E SE E SE E Wind char GN LT GN LT GN LT GN LT GN Avg clouds SC SC SC FW SC SC CL FW FW SC FW FW SC SC FW FW FW SC PoP 12hr 30 10 30 0 20 0 50 5 50 Rain shwrs IS IS IS IS IS SC IS IS SC SC IS IS SC SC Tstms IS $$ PRZ006-190800- Central Interior- Including the cities of Aibonito, Barranquitas, Ciales, Coamo, Corozal, Jayuya, Morovis, Naranjito, Orocovis, and Villalba 231 PM AST Fri Sep 18 2026 Date 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 64 73 77 75 85 92 64 72 76 75 84 92 63 72 76 Temp 80 76 75 74 73 80 84 85 79 76 74 73 72 79 83 84 79 76 74 73 72 79 Dewpt 71 71 72 71 70 73 73 74 73 72 72 72 71 73 74 74 73 72 72 72 71 73 RH 74 85 90 90 90 79 70 70 82 87 93 97 97 82 74 72 82 87 93 97 97 82 Wind dir SE E E E E E E SE E E E E E E E SE SE SE E E E E Wind spd 6 4 3 3 2 3 6 8 5 3 3 2 2 4 6 6 5 3 2 3 3 5 Wind gust 20 24 19 20 Clouds SC FW SC FW SC FW FW SC B1 SC SC FW SC FW FW SC SC FW FW SC SC SC PoP 12hr 10 50 20 20 10 QPF 12hr 0.02-0.11 0.04-0.79 0.02-0.17 0.02-0.44 0.00-0.17 Snow 12hr MM MM MM Rain shwrs IS IS IS IS IS IS IS IS SC IS IS IS IS IS IS IS IS IS IS IS IS IS Tstms IS Heat index 83 83 90 91 83 83 89 91 82 83 Max heat 102 86 98 111 109 85 98 109 108 85 98 Date 09/21 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 84 72 84 72 84 72 84 72 84 Temp 84 76 73 79 84 76 73 79 84 76 73 79 84 76 73 79 84 76 Dewpt 73 72 72 73 74 72 71 72 73 72 71 73 73 72 72 73 68 69 PWind dir SE SE E E E E SE SE SE Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC FW FW SC SC FW FW SC SC FW FW SC SC FW FW FW SC PoP 12hr 40 5 20 5 40 5 30 5 30 Rain shwrs IS SC IS IS IS IS IS IS IS SC IS IS IS SC IS IS SC SC Tstms IS $$ PRZ007-190800- Ponce and Vicinity- Including the cities of Guayanilla, Juana Diaz, Yauco, Penuelas, Ponce, and Santa Isabel 231 PM AST Fri Sep 18 2026 Date 09/18/26 Sat 09/19/26 Sun 09/20/26 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 64 76 83 75 88 94 63 75 83 75 87 93 63 76 83 Temp 83 80 78 77 76 83 87 88 82 79 77 76 76 82 86 87 82 79 77 76 76 82 Dewpt 73 73 72 71 70 73 75 75 75 74 73 72 71 73 75 75 74 74 73 72 71 73 RH 72 79 82 82 82 72 68 66 79 85 87 87 85 74 70 68 77 85 87 87 85 74 Wind dir SE E NE NE NE E SE SE SE E NE NE NE E SE SE SE E E E E E Wind spd 8 5 5 3 3 4 9 10 6 4 4 3 3 5 9 9 6 4 4 4 4 8 Wind gust 21 25 21 23 Clouds SC FW FW FW SC SC FW SC B1 SC FW SC SC FW FW SC SC FW FW SC SC FW PoP 12hr 10 30 20 10 20 QPF 12hr 0.01-0.10 0.03-1.08 0.03-0.20 0.01-0.11 0.01-0.17 Snow 12hr MM MM MM Rain shwrs IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS Tstms IS Heat index 88 83 80 88 95 97 89 83 88 95 96 88 83 88 Max heat 103 93 96 109 108 95 96 108 106 94 96 Date 09/21 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 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 76 87 75 87 75 87 76 87 Temp 87 79 76 82 87 79 76 82 87 79 76 82 87 79 76 82 87 79 Dewpt 74 74 72 72 73 73 71 72 74 73 71 73 74 74 72 73 71 71 PWind dir SE E E E E E E E SE Wind char GN LT GN LT GN LT GN LT GN Avg clouds SC SC FW FW FW SC FW SC SC SC FW FW SC SC FW FW FW SC PoP 12hr 30 5 10 10 20 5 30 5 30 Rain shwrs IS SC IS IS IS IS IS IS SC IS IS IS IS IS IS IS IS Tstms IS $$ PRZ008-190800- Northwest- Including the cities of Aguadilla, Camuy, Hatillo, Isabela, and Quebradillas 231 PM AST Fri Sep 18 2026 Date 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 71 75 83 85 88 94 70 74 83 85 88 93 70 74 83 Temp 83 79 77 76 75 82 87 88 82 78 76 75 74 82 87 88 82 78 76 75 74 82 Dewpt 76 76 74 73 72 75 76 77 76 76 75 74 73 75 76 76 76 76 75 73 72 75 RH 80 91 90 90 90 79 70 70 82 94 97 97 97 79 70 68 82 94 97 94 93 79 Wind dir NE E E E E E NE NE E E SE SE SE E E NE NE E SE SE SE SE Wind spd 11 11 6 6 4 5 8 9 9 10 8 5 5 5 6 9 6 4 5 3 4 5 Wind gust 23 23 19 Clouds B1 SC FW SC SC FW FW SC B1 B1 SC FW FW FW FW OV OV B1 B1 FW FW FW PoP 12hr 10 40 40 80 40 QPF 12hr 0.03-0.10 0.11-0.73 0.04 0.74-1.27 0.02-0.14 Snow 12hr MM MM MM Rain shwrs SC IS IS IS IS SC SC IS IS IS IS IS D D SC SC Tstms IS IS IS IS IS IS Heat index 91 81 89 98100 89 80 89 97 99 89 89 Max heat 104 94 96 114 109 94 96 109 107 94 95 Date 09/21 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 88 74 88 74 88 74 87 74 87 Temp 88 78 75 82 88 78 75 82 88 78 75 81 87 78 75 82 87 78 Dewpt 76 76 73 75 76 76 73 75 77 76 73 75 76 76 73 75 72 73 PWind dir E SE E E E E E SE E Wind char LT LT GN GN GN LT GN LT LT Avg clouds SC SC FW FW FW SC CL CL FW SC FW FW SC B1 SC FW SC B1 PoP 12hr 50 0 40 0 20 0 60 5 60 Rain shwrs SC SC SC SC IS IS IS IS NM NM IS IS NM NM Tstms IS IS $$ PRZ009-190800- Western Interior- Including the cities of Adjuntas, Lares, Las Marias, Maricao, Sabana Grande, San Sebastian, and Utuado 231 PM AST Fri Sep 18 2026 Date 09/18/26 Sat 09/19/26 Sun 09/20/26 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 67 73 77 75 85 94 66 72 77 75 85 93 66 72 77 Temp 80 77 75 73 73 80 84 85 80 76 74 73 72 80 84 85 79 76 74 73 72 80 Dewpt 72 72 72 71 69 72 74 75 73 73 73 72 70 73 74 74 72 72 73 71 70 73 RH 77 85 90 93 87 77 72 72 79 90 97 97 93 79 72 70 79 87 97 93 93 79 Wind dir E SE E E E E E E SE E E SE SE E E E E SE SE SE E SE Wind spd 4 4 3 3 2 3 4 4 3 3 4 3 3 3 4 4 2 3 3 3 3 4 Wind gust 20 20 20 21 Clouds B1 B1 FW FW FW FW FW SC OV B1 SC FW FW FW FW B1 B1 SC SC FW FW FW PoP 12hr 30 70 50 50 10 QPF 12hr 0.01-0.18 0.35-1.21 0.03 0.02-1.12 0.01-0.07 Snow 12hr MM MM MM Rain shwrs SC SC IS SC NM SC IS SC SC IS IS Tstms IS IS IS IS IS Heat index 84 83 91 94 83 83 91 92 83 83 Max heat 104 86 96 114 110 87 96 111 109 87 95 Date 09/21 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 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 84 72 85 Temp 85 76 73 79 85 76 72 79 85 76 72 79 84 76 73 79 85 76 Dewpt 74 72 71 72 74 73 71 73 75 73 71 72 73 72 71 72 68 70 PWind dir SE SE E E E E E SE SE Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC B1 CL CL SC SC CL FW SC SC FW FW SC B1 FW FW SC B1 PoP 12hr 60 0 50 0 50 5 60 0 60 Rain shwrs NM NM SC SC SC SC IS IS NM NM IS NM NM Tstms IS IS IS IS IS IS IS IS $$ PRZ010-190800- Mayaguez and Vicinity- Including the cities of Aguada, Anasco, Hormigueros, Mayaguez, Moca, Rincon, and San German 231 PM AST Fri Sep 18 2026 Date 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 69 75 83 76 91 94 68 75 83 76 90 93 68 75 83 Temp 84 80 78 76 76 84 89 91 84 80 78 76 76 84 89 90 84 80 78 76 76 84 Dewpt 76 76 75 73 72 75 77 77 77 76 76 74 73 75 77 77 76 76 75 74 72 75 RH 77 88 91 90 87 74 68 64 80 88 94 94 90 74 68 66 77 88 91 94 87 74 Wind dir E SE E E E E E SW E E E E E E SE SW NE E E E E E Wind spd 6 8 6 5 4 4 4 5 4 6 6 5 5 5 4 5 4 4 5 5 6 6 Wind gust 18 17 18 17 14 17 18 19 18 16 16 16 18 21 Clouds B1 B1 FW FW FW FW FW SC B2 B1 B1 CL CL FW FW B1 B1 SC SC FW FW FW PoP 12hr 30 70 50 40 20 QPF 12hr 0.02-0.20 0.08-1.21 0.03-0.19 0.00-1.26 0.00-0.11 Snow 12hr MM MM MM Rain shwrs SC SC IS IS NM SC SC SC SC IS IS Tstms IS IS IS IS IS IS IS Heat index 93 85 92102104 94 84 92101103 93 84 92 Max heat 106 94 103 119 111 94 101 113 111 94 101 Date 09/21 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 90 75 90 75 90 75 90 75 90 Temp 90 80 76 84 90 79 76 83 90 79 76 83 90 80 76 84 90 80 Dewpt 77 76 74 75 77 76 74 75 77 76 74 75 76 76 74 75 72 74 PWind dir E E E E E E E E E Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC FW FW FW SC CL CL FW B1 SC SC SC B1 SC FW SC B1 PoP 12hr 60 0 50 0 50 20 60 5 60 Rain shwrs NM NM SC SC SC SC IS IS NM NM IS IS NM NM Tstms IS IS IS IS IS IS $$ PRZ011-190800- Southwest- Including the cities of Cabo Rojo, Guanica, and Lajas 231 PM AST Fri Sep 18 2026 Date 09/18/26 Sat 09/19/26 Sun 09/20/26 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 73 76 83 85 92 94 73 76 83 85 92 93 73 76 83 Temp 85 81 79 77 77 85 91 92 85 81 79 77 77 85 90 92 85 81 79 77 77 85 Dewpt 75 76 75 73 72 74 77 78 77 77 76 74 73 75 78 77 77 76 75 74 73 75 RH 72 85 88 87 85 70 64 64 77 88 91 90 87 72 68 62 77 85 88 90 87 72 Wind dir SE E E E E E SE SE E E E E E E SE SE SE E E E E E Wind spd 9 9 10 5 5 6 10 12 8 8 8 6 6 8 12 13 10 9 9 8 8 11 Wind gust 23 24 25 25 26 21 19 20 23 Clouds SC SC FW FW FW SC FW SC SC SC SC FW FW FW FW SC SC FW FW SC SC CL PoP 12hr 10 30 30 5 10 QPF 12hr 0.01-0.15 0.08-1.01 0.03-0.09 0.00-0.09 0.02 Snow 12hr MM MM MM Rain shwrs IS IS IS IS IS SC IS IS IS IS IS IS IS Tstms IS Heat index 94 87 81 94105107 97 88 80 94105106 95 87 81 94 Max heat 105 95 96 114 112 95 96 112 111 94 96 Date 09/21 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 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 91 76 91 75 92 76 92 Temp 92 81 77 85 91 80 76 85 91 80 76 85 92 81 77 85 92 81 Dewpt 77 76 74 73 75 76 74 73 75 75 73 75 77 77 74 75 73 74 PWind dir SE E E E E E SE E SE Wind char GN GN GN GN GN LT GN LT GN Avg clouds FW SC FW FW FW FW FW FW FW SC SC FW SC SC FW FW FW SC PoP 12hr 20 0 10 5 20 5 20 5 20 Rain shwrs IS IS IS IS IS IS IS IS IS IS IS IS IS IS $$ PRZ012-190800- Culebra- Including the city of Culebra 231 PM AST Fri Sep 18 2026 Date 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 81 85 88 94 81 85 88 94 81 Temp 86 84 83 81 81 85 87 88 85 83 82 81 81 85 88 88 85 83 82 82 81 85 Dewpt 76 76 76 75 75 76 76 76 76 76 76 75 75 76 75 75 75 75 76 75 75 76 RH 72 77 80 82 82 75 70 68 75 80 82 82 82 75 66 66 72 77 82 79 82 75 Wind dir E E E E E E E E E E E E E E E SE E E E E E E Wind spd 12 13 14 12 10 10 11 9 10 12 12 10 11 10 11 10 10 12 12 11 11 12 Clouds SC SC B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 40 30 30 30 30 QPF 12hr 0.10 0.11 0.09 0.09 0.10 Snow 12hr MM MM MM Rain shwrs IS IS SC IS SC SC IS IS SC IS SC IS IS SC SC SC SC SC SC SC SC SC Heat index 96 92 90 88 87 95 98 98 95 91 90 88 88 95 97 98 94 91 90 88 88 95 Max heat 103 95 102 107 106 94 100 106 105 94 100 Date 09/21 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 88 81 88 81 88 81 87 82 88 Temp 88 83 81 85 88 83 81 85 88 83 81 85 87 84 82 85 88 84 Dewpt 76 76 76 77 77 76 76 76 77 76 76 77 77 77 76 77 76 75 PWind dir SE E E E E E SE E E Wind char GN GN GN GN BZ GN GN GN BZ Avg clouds SC SC SC SC SC SC SC SC SC SC SC SC B1 SC SC SC SC SC PoP 12hr 30 30 30 30 30 30 40 20 40 Rain shwrs SC SC SC SC SC SC SC SC SC IS IS SC SC SC IS IS SC SC $$ PRZ013-190800- Vieques- Including the city of Vieques 231 PM AST Fri Sep 18 2026 Date 09/18/26 Sat 09/19/26 Sun 09/20/26 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 77 80 83 85 88 92 77 80 83 85 89 92 77 80 83 Temp 86 83 82 81 80 85 88 88 85 83 81 80 80 85 88 89 85 83 82 81 80 85 Dewpt 75 74 75 75 74 76 74 74 74 74 75 74 74 75 74 73 74 73 74 74 74 75 RH 70 74 79 82 82 75 63 63 70 74 82 82 82 72 63 59 70 72 77 79 82 72 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 11 13 13 12 10 9 11 9 10 12 12 10 10 10 10 9 9 9 10 11 11 11 Clouds CL SC B1 SC B1 B1 SC SC SC SC B1 SC SC SC SC SC SC SC SC B1 B1 SC PoP 12hr 50 40 40 30 30 QPF 12hr 0.13-0.22 0.12 0.10-0.17 0.08 0.09-0.16 Snow 12hr MM MM MM Rain shwrs IS SC IS SC SC IS IS IS SC SC SC IS SC SC IS IS SC SC SC SC SC Heat index 94 90 88 86 85 94 97 97 93 89 87 85 85 94 97 97 92 89 87 85 85 94 Max heat 101 93 97 102 101 93 97 103 101 92 97 Date 09/21 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 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 80 89 80 89 80 88 81 89 Temp 89 83 81 85 89 83 80 85 89 83 80 85 88 83 81 85 89 83 Dewpt 74 74 74 76 75 74 75 75 75 75 75 76 74 74 75 76 74 75 PWind dir SE 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 B1 B1 SC SC B1 B1 PoP 12hr 30 30 30 30 30 30 30 30 30 Rain shwrs SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC $$ VIZ001-190800- St.Thomas...St. John...and Adjacent Islands- Including the cities of Anna`s Retreat, Charlotte Amalie, Charlotte Amalie East, Charlotte Amalie West, and Cruz Bay 231 PM AST Fri Sep 18 2026 Date 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 73 80 83 85 87 93 74 80 83 85 87 93 73 80 83 Temp 85 83 81 80 80 84 86 87 84 82 81 80 80 84 86 87 84 82 81 80 80 84 Dewpt 75 75 75 75 75 75 74 74 74 75 75 75 75 75 74 73 74 74 75 75 75 75 RH 72 77 82 85 85 74 68 65 72 79 82 85 85 74 68 63 72 77 82 85 85 74 Wind dir E E E E E E E E E E E E E E SE SE E E E E E E Wind spd 12 13 13 12 11 11 10 9 10 12 12 11 10 11 11 10 11 12 12 11 12 12 Clouds SC SC SC SC B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 40 30 30 30 30 QPF 12hr 0.09 0.06 0.08 0.07 0.09 Snow 12hr MM MM MM Rain shwrs IS IS IS IS SC SC IS IS IS IS SC IS IS SC SC IS IS IS IS SC SC SC Heat index 92 89 87 86 85 92 95 95 91 88 87 85 85 92 94 95 91 89 87 86 86 92 Max heat 101 93 98 105 104 93 98 104 102 93 99 Date 09/21 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 87 80 87 80 87 80 86 81 87 Temp 87 82 80 84 87 82 80 84 87 82 80 84 86 83 81 84 87 83 Dewpt 74 75 75 76 75 75 76 75 75 76 76 76 75 75 76 76 75 75 PWind dir SE E E E E E E E E Wind char GN GN GN BZ BZ GN GN BZ BZ Avg clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 30 30 20 20 20 20 20 20 20 Rain shwrs SC SC SC SC IS IS IS IS IS IS IS IS IS IS IS IS IS IS $$ VIZ002-190800- St Croix- Including the cities of Christiansted, Frederiksted, Frederiksted Southeast, and Grove Place 231 PM AST Fri Sep 18 2026 Date 09/18/26 Sat 09/19/26 Sun 09/20/26 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 77 80 83 85 88 94 77 80 83 85 88 94 77 80 83 Temp 86 83 82 81 80 84 87 88 84 82 81 80 80 85 87 88 85 83 81 80 80 85 Dewpt 75 76 76 76 75 76 76 76 75 75 76 75 75 76 75 75 75 75 76 76 75 76 RH 70 80 82 85 85 77 70 68 74 79 85 85 85 75 68 66 72 77 85 88 85 75 Wind dir E E E E E E E E E E E E E E SE SE E E E E E E Wind spd 12 11 12 11 9 10 11 10 11 10 10 9 8 9 10 10 11 10 10 10 11 11 Clouds SC SC SC B1 B2 B1 SC SC SC SC FW FW CL FW FW SC SC SC SC SC SC SC PoP 12hr 50 40 20 20 30 QPF 12hr 0.16 0.06 0.01 0.03 0.06 Snow 12hr MM MM MM Rain shwrs IS IS IS SC SC SC IS IS IS IS IS IS IS IS IS IS IS SC Heat index 95 91 88 86 85 94 98 98 93 90 88 86 85 94 97 98 93 90 88 86 85 94 Max heat 106 95 101 109 108 93 100 109 106 93 100 Date 09/21 Tue 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri 09/25/26 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 87 81 88 Temp 88 83 80 85 88 82 80 85 88 82 80 84 87 83 81 85 88 83 Dewpt 75 76 76 76 76 76 76 76 76 76 76 76 76 77 76 76 74 75 PWind dir SE 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 30 30 20 20 20 20 20 20 20 Rain shwrs SC SC SC SC IS IS IS IS IS IS IS IS IS IS IS IS IS IS $$