FOCA52 TJSJ 181831 AFMSJU Area Forecast Matrices National Weather Service San Juan PR 231 PM AST Mon May 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 Mon May 18 2026 Date 05/18/26 Tue 05/19/26 Wed 05/20/26 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 81 81 87 90 70 74 81 80 87 90 70 74 81 Temp 84 78 76 74 76 82 86 87 84 79 76 74 76 82 86 87 83 78 76 74 76 82 Dewpt 71 71 71 71 70 72 73 72 72 72 72 72 71 73 73 73 72 72 72 71 71 72 RH 65 79 85 90 82 72 65 61 67 79 87 93 85 74 65 63 70 82 87 90 85 72 Wind dir E E E SE SE E E E E E E E E E E E E E E E E E Wind spd 13 10 9 6 6 10 16 16 12 9 8 8 6 11 14 16 13 9 9 6 9 10 Wind gust 18 18 26 24 Clouds SC SC SC SC SC SC SC B1 B1 SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 30 40 40 50 50 QPF 12hr 0.04-0.13 0.14-0.28 0.09-0.14 0.12-0.25 0.10-0.15 Snow 12hr MM MM MM Rain shwrs SC IS SC IS IS SC IS SC SC SC SC IS IS SC SC SC SC SC SC SC SC SC Heat index 88 80 87 93 95 89 80 87 93 94 89 80 87 Max heat 99 86 90 102 100 87 91 101 100 87 91 Date 05/21 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 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 75 87 75 87 75 87 Temp 87 79 74 82 87 79 75 82 87 79 75 82 87 79 75 82 87 79 Dewpt 73 72 72 73 73 72 72 73 73 72 72 72 73 72 72 73 67 70 PWind dir E E E E E E E E E Wind char GN LT GN GN GN GN GN GN GN Avg clouds SC SC B1 B1 B2 B1 SC SC SC B1 B1 B2 B2 B1 B2 B2 B2 B2 PoP 12hr 40 50 50 20 50 60 60 60 60 Rain shwrs SC SC SC SC SC SC IS IS IS SC SC NM NM SC NM NM NM NM Tstms IS IS $$ PRZ002-190800- Northeast- Including the cities of Ceiba, Canovanas, Fajardo, Humacao, Loiza, Luquillo, Naguabo, and Rio Grande 231 PM AST Mon May 18 2026 Date 05/18/26 Tue 05/19/26 Wed 05/20/26 Thu AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 64 74 81 75 85 90 64 74 81 75 84 90 64 74 81 Temp 82 78 76 74 75 80 84 85 82 78 76 74 75 80 83 84 81 77 76 74 75 80 Dewpt 71 70 70 70 70 72 72 72 72 72 72 71 71 72 72 72 71 71 71 71 71 71 RH 69 76 82 87 84 77 67 65 72 82 87 90 87 77 70 67 72 82 85 90 87 74 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 12 12 13 10 11 13 17 14 12 10 11 11 10 14 14 13 12 11 11 11 11 11 Wind gust 25 25 21 23 24 27 23 24 23 21 26 24 23 23 25 23 21 Clouds SC SC B1 SC SC B1 SC B1 B1 SC SC B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B1 PoP 12hr 40 40 50 50 50 QPF 12hr 0.13 0.17-0.29 0.15 0.17-0.27 0.16 Snow 12hr MM MM MM Rain shwrsSC SC SC IS IS SC IS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC Heat index 86 84 89 90 86 84 88 90 86 84 Max heat 96 87 90 98 97 87 89 98 97 87 90 Date 05/21 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 85 74 85 74 84 74 84 74 85 Temp 85 78 74 80 85 78 74 80 84 78 74 80 84 78 74 80 85 78 Dewpt 72 72 72 72 72 72 72 72 72 72 71 72 72 72 71 72 70 71 PWind dir E E E E E E E E E Wind char GN GN GN GN GN GN GN GN GN Avg clouds B1 B1 B1 B1 B1 B1 B1 SC SC B1 B2 B2 B2 B1 B2 B2 B2 B2 PoP 12hr 50 50 50 30 50 60 60 60 60 Rain shwrs SC SC SC SC SC SC SC SC SC SC SC NM NM NM NM NM NM NM Tstms IS $$ PRZ003-190800- Southeast- Including the cities of Arroyo, Guayama, Maunabo, Patillas, Salinas, and Yabucoa 231 PM AST Mon May 18 2026 Date 05/18/26 Tue 05/19/26 Wed 05/20/26 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 74 81 75 85 90 66 74 81 75 84 90 66 74 81 Temp 82 77 75 74 75 80 84 85 82 77 75 74 75 80 83 84 81 77 75 74 75 80 Dewpt 69 70 69 69 69 71 70 71 71 71 71 71 70 71 71 70 71 71 71 70 70 69 RH 65 79 82 84 82 74 63 63 69 82 87 90 84 74 67 63 72 82 87 87 84 69 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 12 10 10 9 9 12 14 12 11 9 9 8 8 12 13 12 12 10 10 8 10 11 Wind gust 25 21 21 23 26 26 23 19 18 18 23 26 26 26 20 23 20 23 Clouds SC SC SC SC SC SC FW SC SC SC SC B1 B1 B1 B1 SC SC B1 B1 B1 B1 SC PoP 12hr 30 30 50 50 50 QPF 12hr 0.04-0.13 0.05-0.17 0.08-0.16 0.07-0.18 0.13 Snow 12hr MM MM MM Rain shwrs IS IS SC IS IS SC IS IS IS SC IS SC SC SC SC SC SC SC SC SC SC SC Heat index 85 83 88 90 85 83 87 88 85 82 Max heat 95 86 90 97 96 87 89 95 95 87 89 Date 05/21 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 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 74 85 74 84 74 85 74 85 Temp 84 77 74 80 85 78 74 80 84 78 74 80 85 78 74 80 85 78 Dewpt 70 71 71 71 71 71 71 72 71 71 71 71 71 71 71 71 68 70 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 B1 B1 SC B1 B1 SC SC SC B1 B1 B1 B1 B2 B1 B1 B1 PoP 12hr 40 40 50 30 50 50 50 50 50 Rain shwrs SC SC SC SC SC SC SC SC IS SC SC SC SC SC SC SC SC SC Tstms IS IS $$ PRZ004-190800- Eastern Interior- Including the cities of Aguas Buenas, Caguas, Cayey, Cidra, Comerio, Gurabo, Juncos, Las Piedras, and San Lorenzo 231 PM AST Mon May 18 2026 Date 05/18/26 Tue 05/19/26 Wed 05/20/26 Thu AST 3hrly 17 20 23 02 05 08 11 14 1720 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 65 70 73 75 83 90 65 70 74 75 83 89 66 70 74 Temp 80 75 72 70 72 78 82 83 80 75 72 70 72 78 81 83 79 75 72 70 72 78 Dewpt 69 69 69 69 68 71 71 70 70 70 70 70 69 71 71 71 70 70 70 69 70 70 RH 69 82 90 97 87 79 69 65 72 84 93100 90 79 72 67 74 84 93 97 93 76 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 11 6 6 5 5 10 13 12 10 5 4 4 4 10 11 11 10 6 5 4 6 9 Clouds SC SC SC SC SC SC FW SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 30 30 40 50 50 QPF 12hr 0.06-0.14 0.07-0.27 0.08-0.16 0.09-0.25 0.10-0.16 Snow 12hr MM MM MM Rain shwrs IS SC SC SC IS SC IS SC SC SC IS SC SC SC SC SC SC SC SC SC SC SC Heat index 82 80 86 88 82 85 87 81 Max heat 96 89 97 97 89 97 95 89 Date 05/21 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 83 71 83 71 83 71 83 71 83 Temp 83 75 71 78 83 75 71 78 83 75 71 78 83 75 71 78 83 75 Dewpt 71 70 70 71 71 71 70 71 71 70 70 71 70 70 70 71 66 69 PWind dir E E E E E E E E E Wind char GN LT GN LT GN LT GN LT GN Avg clouds SC SC B1 B1 B1 B1 B1 SC SC B1 B1 B2 B2 B1 B2 B2 B2 B2 PoP 12hr 40 40 50 30 50 60 60 60 60 Rain shwrs SC SC SC SC SC SC SC SC IS SC SC SC SC SC NM NM NM NM Tstms IS IS $$ PRZ005-190800- North Central- Including the cities of Arecibo, Barceloneta, Dorado, Florida, Manati, Vega Alta, and Vega Baja 231 PM AST Mon May 18 2026 Date 05/18/26 Tue 05/19/26 Wed 05/20/26 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 69 72 81 83 88 92 70 72 81 83 88 92 70 72 81 Temp 84 77 75 72 74 81 86 88 84 78 75 73 74 82 86 88 84 78 75 73 74 82 Dewpt 72 70 70 70 69 72 73 73 73 72 72 71 70 73 73 73 73 71 71 70 71 72 RH 67 79 84 93 84 74 65 61 70 82 90 93 87 74 65 61 70 79 87 90 90 72 Wind dir E E SE SE SE E E E E E E E E E E E E E E E E E Wind spd 16 11 8 6 5 9 16 17 14 11 8 8 8 9 16 17 17 11 9 6 6 10 Wind gust 31 23 26 32 25 23 27 31 31 23 Clouds SC FW FW FW FW SC FW B1 B1 SC SC SC SC SC SC B1 B1 B1 B1 SC SC SC PoP 12hr 10 50 30 30 30 QPF 12hr 0.00-0.06 0.11-0.52 0.03-0.13 0.10-0.55 0.04-0.11 Snow 12hr MM MM MM Rain shwrs SC IS IS IS IS IS IS SC SC IS IS IS IS IS IS SC SC SC SC IS IS IS Heat index 89 86 94 96 90 87 94 96 90 87 Max heat 102 86 91 105 103 87 92 105 102 87 92 Date 05/21 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 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 72 88 7388 73 88 73 88 Temp 88 78 73 82 88 78 73 82 88 78 73 82 88 78 73 82 88 78 Dewpt 73 71 71 73 74 72 71 73 74 72 71 72 73 72 71 73 66 70 PWind dir E E E E E E E E E Wind char GN LT GN LT GN GN BZ GN GN Avg clouds SC B1 SC SC B1 B1 SC SC SC SC B1 B1 B2 B1 SC B1 B1 B1 PoP 12hr 50 30 60 20 30 50 50 30 40 Rain shwrs IS SC IS IS NM NM IS IS IS SC SC SC SC SC IS SC SC SC Tstms IS IS IS IS IS IS $$ PRZ006-190800- Central Interior- Including the cities of Aibonito, Barranquitas, Ciales, Coamo, Corozal, Jayuya, Morovis, Naranjito, Orocovis, and Villalba 231 PM AST Mon May 18 2026 Date 05/18/26 Tue 05/19/26 Wed 05/20/26 Thu AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 59 69 73 75 82 90 60 69 73 75 81 90 60 69 73 Temp 78 73 71 69 70 76 80 82 78 73 71 69 71 76 80 81 78 73 71 69 71 77 Dewpt 67 67 67 67 66 68 69 68 68 68 68 68 67 69 69 69 68 68 68 68 68 68 RH 69 81 87 93 87 76 69 63 71 84 90 97 87 79 69 67 71 84 90 97 90 74 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 10 6 4 5 4 8 11 11 10 5 3 3 3 8 11 11 10 5 5 3 5 8 Wind gust 25 25 24 20 24 25 24 Clouds SC SC CL SC SC SC FW SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 10 30 20 30 30 QPF 12hr 0.01-0.07 0.05-0.19 0.01-0.10 0.05-0.14 0.04-0.11 Snow 12hr MM MM MM Rain shwrs IS IS IS IS IS SC SC IS IS IS IS IS IS SC SC SC SC IS IS IS Heat index 80 83 85 80 83 84 Max heat 95 87 98 96 88 98 96 88 Date 05/21 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 82 69 82 70 82 70 82 70 82 Temp 82 73 69 77 82 74 70 77 82 74 70 77 82 74 70 77 82 74 Dewpt 69 68 68 69 69 69 68 69 69 68 68 68 69 68 68 69 62 67 PWind dir E E E E E E E E E Wind char GN LT GN LT GN LT GN LT GN Avg clouds SC SC SC SC SC B1 SC SC SC SC B1 B1 B1 B1 SC SC B1 B1 PoP 12hr 30 20 50 30 30 50 50 30 40 Rain shwrs IS SC IS IS IS SC IS IS IS SC SC SC SC SC IS IS SC SC Tstms IS IS IS IS $$ PRZ007-190800- Ponce and Vicinity- Including the cities of Guayanilla, Juana Diaz, Yauco, Penuelas, Ponce, and Santa Isabel 231 PM AST Mon May 18 2026 Date 05/18/26 Tue 05/19/26 Wed 05/20/26 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 61 72 81 75 86 92 62 73 81 75 85 92 61 73 81 Temp 82 77 74 72 74 80 84 86 82 77 75 73 74 80 84 85 82 77 75 73 74 80 Dewpt 69 68 67 66 66 68 69 69 70 69 68 68 68 68 70 68 69 69 68 68 67 67 RH 65 74 79 81 76 67 61 57 67 76 79 84 82 67 63 57 65 76 79 84 79 65 Wind dir E E E E E E SE SE EE E E E E E E E E E E E E Wind spd 12 8 6 6 5 9 13 12 11 8 5 4 4 8 13 13 12 9 8 5 5 9 Wind gust 28 20 21 27 28 25 23 20 28 29 28 23 20 23 Clouds SC FW CL FW FW FW CL SC SC FW FW FW FW SC SC SC SC SC SC SC SC SC PoP 12hr 5 10 10 10 30 QPF 12hr 0.01 0.02-0.19 0.01-0.08 0.05-0.15 0.02-0.12 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 SC Tstms IS Heat index 85 83 88 90 86 82 88 89 85 82 Max heat 98 85 88 99 98 86 88 98 97 86 88 Date 05/21 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 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 86 73 86 73 86 73 86 73 86 Temp 86 77 73 80 86 77 73 80 86 77 73 81 86 77 73 81 86 77 Dewpt 68 70 68 69 71 70 69 69 70 69 68 68 70 68 68 68 65 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 SC SC SC SC SC SC SC SC SC SC SC B1 SC SC SC B1 PoP 12hr 30 10 20 20 20 30 40 20 40 Rain shwrs SC IS IS IS IS IS IS IS IS IS IS IS SC SC IS IS SC SC $$ PRZ008-190800- Northwest- Including the cities of Aguadilla, Camuy, Hatillo, Isabela, and Quebradillas 231 PM AST Mon May 18 2026 Date 05/18/26 Tue 05/19/26 Wed 05/20/26 Thu AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 67 71 81 83 86 92 67 71 81 83 87 93 67 71 81 Temp 82 76 73 71 72 80 85 86 82 76 74 71 73 80 85 87 82 76 73 71 73 80 Dewpt 72 71 69 68 67 69 71 73 74 72 71 69 68 70 72 74 74 72 70 69 69 70 RH 72 85 87 90 84 69 63 65 77 87 90 93 84 72 65 65 77 87 90 93 87 72 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 16 12 10 9 8 9 13 17 10 12 10 10 10 10 13 17 16 13 10 9 8 11 Wind gust 29 23 25 31 23 23 23 20 20 26 31 29 25 23 19 Clouds B1 FW CL CL CL FW FW B2 B2 SC SC FW FW SC SC B2 B2 B1 B1 FW FW SC PoP 12hr 10 60 20 60 30 QPF 12hr 0.01 0.32-0.74 0.04 0.39-0.76 0.05 Snow 12hr MM MM MM Rain shwrs SC IS IS NM NM IS IS IS IS NM NM SC SC IS IS IS Tstms IS IS IS Heat index 87 83 90 94 88 83 91 94 88 83 Max heat 103 87 89 105 104 87 90 106 105 87 90 Date 05/21 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 87 71 87 71 86 72 87 72 87 Temp 87 76 71 80 87 76 72 80 86 77 72 80 87 77 72 80 87 77 Dewpt 73 72 69 71 74 73 70 71 74 72 70 70 73 72 70 70 67 70 PWind dir E E E E E E E E E Wind char GN LT GN GN GN GN BZ GN BZ Avg clouds SC B1 SC SC SC B2 B1 SC SC SC SC SC B1 B1 SC SC SC B1 PoP 12hr 60 20 60 40 30 40 60 30 40 Rain shwrs IS NM IS IS NM NM SC SC IS IS SC SC NM NM SC SC SC SC Tstms IS IS IS IS IS IS $$ PRZ009-190800- Western Interior- Including the cities of Adjuntas, Lares, Las Marias, Maricao, Sabana Grande, San Sebastian, and Utuado 231 PM AST Mon May 18 2026 Date 05/18/26 Tue 05/19/26 Wed 05/20/26 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 69 73 75 84 93 63 69 74 75 83 93 63 69 74 Temp 80 74 71 69 70 77 82 84 80 74 71 69 71 77 82 83 79 74 71 69 71 78 Dewpt 70 69 67 66 65 67 69 70 70 69 68 67 67 68 69 70 70 69 68 67 67 68 RH 72 84 87 90 84 71 65 63 72 84 90 93 87 74 65 65 74 84 90 93 87 71 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 5 4 5 4 4 5 9 8 5 5 4 4 4 5 9 8 6 5 5 4 4 5 Wind gust 16 27 27 23 20 27 28 27 20 Clouds B2 FW CL CL CL FW CL B2 B2 FW SC CL CL SC SC B1 B1 SC SC FW FW SC PoP 12hr 0 50 10 40 20 QPF 12hr 0.01 0.04-0.74 0.02 0.06-0.66 0.03 Snow 12hr MM MM MM Rain shwrs NM IS SC NM IS IS IS IS SC SC IS IS IS IS IS Tstms IS IS IS Heat index 82 85 88 82 85 88 82 Max heat 103 89 106 105 90 106 105 90 Date 05/21 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 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 69 84 69 84 70 84 69 84 Temp 84 74 69 78 84 74 70 78 84 74 70 78 84 74 70 78 84 74 Dewpt 70 69 67 68 71 70 68 69 71 69 68 68 70 69 68 68 65 67 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 SC SC B1 B1 SC SC B1 SC SC B1 B1 SC SC SC B1 PoP 12hr 60 10 40 40 40 30 60 30 50 Rain shwrs IS NM IS IS IS SC SC SC SC SC IS IS SC NM SC IS IS SC Tstms IS IS IS IS IS IS IS IS $$ PRZ010-190800- Mayaguez and Vicinity- Including the cities of Aguada, Anasco, Hormigueros, Mayaguez, Moca, Rincon, and San German 231 PM AST Mon May 18 2026 Date 05/18/26 Tue 05/19/26 Wed 05/20/26 Thu AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 65 72 81 75 89 93 66 73 81 75 89 93 66 72 81 Temp 84 78 75 73 74 82 87 89 84 78 75 73 75 82 87 89 84 78 75 73 74 82 Dewpt 74 72 70 69 68 71 72 74 74 73 71 70 69 72 73 74 74 73 71 69 70 71 RH 72 82 84 87 82 69 61 61 72 85 87 90 82 72 63 61 72 85 87 87 87 69 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 8 5 8 8 6 8 8 10 5 6 8 8 8 8 8 9 9 9 9 8 6 8 Wind gust 20 17 23 23 25 21 21 24 20 21 18 19 20 23 21 21 19 24 21 23 19 Clouds B2 SC FW CL CL FW CL B1 B1 SC SC FW FW SC SC B1 B1 SC SC FW FW SCPoP 12hr 20 60 20 50 30 QPF 12hr 0.01-0.09 0.01-0.75 0.01-0.07 0.05-0.77 0.03 Snow 12hr MM MM MM Rain shwrs NM IS IS NM NM IS IS IS IS NM NM SC SC IS Tstms IS IS IS Heat index 91 86 94 98 92 87 95 99 92 87 Max heat 108 87 91 110 108 87 93 110 109 87 92 Date 05/21 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 89 73 89 73 89 73 89 73 89 Temp 89 78 73 82 89 78 73 82 89 78 74 82 89 78 73 82 89 78 Dewpt 74 73 70 72 75 73 71 72 75 73 70 71 74 73 70 71 69 70 PWind dir E E E E E E E E E Wind char LT LT GN GN GN GN GN GN GN Avg clouds SC B1 SC SC SC B1 B1 B1 SC B1 SC SC SC B2 B1 B1 SC B1 PoP 12hr 60 30 50 50 40 20 60 50 60 Rain shwrs IS NM IS IS IS SC SC SC SC SC IS IS IS SC SC SC IS SC Tstms IS IS IS IS IS IS IS IS IS IS IS IS IS $$ PRZ011-190800- Southwest- Including the cities of Cabo Rojo, Guanica, and Lajas 231 PM AST Mon May 18 2026 Date 05/18/26 Tue 05/19/26 Wed 05/20/26 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 71 73 81 83 91 93 72 74 81 83 90 93 71 74 81 Temp 86 79 76 74 75 83 89 91 86 79 77 75 76 84 88 90 86 79 77 75 76 84 Dewpt 71 71 69 68 67 69 71 71 72 72 70 69 69 69 72 71 72 72 71 70 69 69 RH 61 77 79 82 76 63 56 52 63 79 79 82 79 61 59 54 63 79 82 84 79 61 Wind dir E E E E E E SE SE E E E E E E E SE E E E E E E Wind spd 10 11 11 11 8 11 17 18 13 12 8 5 6 11 17 18 17 14 11 10 6 10 Wind gust 24 25 26 25 19 23 33 34 28 27 20 24 33 35 32 33 26 23 23 Clouds SC FW SC CL FW FW CL SC SC FW FW CL CL SC SC SC SC SC SC FW FW SC PoP 12hr 20 10 10 10 30 QPF 12hr 0.03 0.01-0.16 0.01 0.05-0.26 0.04 Snow 12hr MM MM MM Rain shwrs IS IS SC IS IS IS IS IS IS IS IS IS IS IS Heat index 91 81 87 95 97 92 83 87 95 97 92 82 87 Max heat 101 87 89 102 101 87 90 102 101 87 90 Date 05/21 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 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 74 90 74 90 74 91 74 91 Temp 90 80 75 84 90 80 75 84 90 80 75 84 91 80 75 84 91 80 Dewpt 70 73 71 71 73 73 70 71 73 72 70 69 72 70 69 70 70 71 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 B1 B1 SC SC B1 PoP 12hr 30 10 20 20 20 10 40 40 50 Rain shwrs IS IS IS IS IS IS SC IS IS IS IS IS SC SC SC SC IS SC Tstms IS IS IS $$PRZ012-190800- Culebra- Including the city of Culebra 231 PM AST Mon May 18 2026 Date 05/18/26 Tue 05/19/26 Wed 05/20/26 Thu AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 75 79 81 83 86 91 75 78 81 83 86 91 75 78 81 Temp 84 81 80 79 79 83 85 86 84 81 80 78 79 83 85 86 84 81 80 78 79 83 Dewpt 73 72 72 73 72 74 74 74 74 74 73 73 73 74 73 73 73 73 73 73 73 73 RH 70 74 77 82 79 74 70 68 72 79 79 85 82 74 67 65 70 77 79 85 82 72 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 17 20 21 19 20 20 23 19 19 19 20 19 21 21 19 19 18 19 20 21 19 18 Clouds SC FW SC SC SC B1 B1 B1 B1 SC SC SC SC SC SC B2 B2 SC SC B1 B1 B2 PoP 12hr 40 40 30 50 50 QPF 12hr 0.11 0.19 0.08 0.19 0.13 Snow 12hr MM MM MM Rain shwrs IS IS SC IS IS SC SC SC SC SC IS IS IS IS IS SC SC IS IS SC SC SC Heat index 90 85 83 81 82 89 93 94 91 86 83 81 82 89 92 94 90 85 83 81 82 89 Max heat 98 87 93 100 99 88 93 99 98 87 92 Date 05/21 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 86 79 86 79 86 79 86 79 86 Temp 86 81 79 83 86 81 79 83 86 81 79 83 86 81 79 83 86 81 Dewpt 74 73 73 74 74 74 74 74 74 74 73 74 74 74 73 74 72 72 PWind dir E E E E E E E E E Wind char BZ BZ BZ BZ BZ BZ BZ BZ BZ Avg clouds B1 B1 B1 B1 B1 SC B1 SC SC B1 B1 B1 B1 B1 B1 B1 B2 B2 PoP 12hr 50 50 50 40 50 40 40 50 60 Rain shwrs SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC NM NM $$ PRZ013-190800- Vieques- Including the city of Vieques 231 PM AST Mon May 18 2026 Date 05/18/26 Tue 05/19/26 Wed 05/20/26 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 77 81 86 74 77 81 86 74 77 81 Temp 83 80 78 77 78 82 85 86 83 80 78 77 78 82 85 86 83 80 78 77 78 82 Dewpt 72 72 71 72 72 73 73 73 73 73 72 73 72 73 73 72 72 72 72 72 72 73 RH 70 77 79 85 82 74 67 65 72 79 82 87 82 74 67 63 70 77 82 85 82 74 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 17 20 20 18 19 20 21 19 18 18 20 19 19 21 19 18 18 20 19 20 18 17 Wind gust 29 Clouds SC FW B1 SC SC B1 SC B1 B1 SC SC B1 B1 SC SC B2 B2 B1 B1 B1 B1 B1 PoP 12hr 40 40 30 50 40 QPF 12hr 0.09 0.20-0.29 0.09-0.15 0.21 0.12 Snow 12hr MM MM MM Rain shwrs IS IS SC IS IS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC Heat index 88 83 88 91 93 89 83 87 91 92 89 83 87 Max heat 94 87 90 96 95 87 90 96 94 87 90 Date 05/21 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 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 0006 12 18 00 Max/Min 86 77 86 77 86 77 86 77 86 Temp 86 80 77 82 86 80 77 82 86 80 77 82 86 80 77 82 86 80 Dewpt 73 73 73 73 73 73 73 73 73 73 72 73 73 73 73 73 72 72 PWind dir E E E E E E E E E Wind char BZ BZ BZ BZ BZ BZ BZ BZ BZ Avg clouds B1 B1 B1 B1 B1 SC B1 SC SC B1 B1 B1 B1 B1 B2 B2 B2 B2 PoP 12hr 40 50 50 40 40 40 60 60 60 Rain shwrs SC SC SC SC SC SC SC SC SC SC SC SC SC SC NM SC NM NM $$ VIZ001-190800- St.Thomas...St. John...and Adjacent Islands- Including the cities of Anna's Retreat, Charlotte Amalie, Charlotte Amalie East, Charlotte Amalie West, and Cruz Bay 231 PM AST Mon May 18 2026 Date 05/18/26 Tue 05/19/26 Wed 05/20/26 Thu AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 72 78 81 83 85 90 72 78 81 83 85 90 72 77 81 Temp 83 80 79 78 78 82 84 85 83 80 79 78 78 82 84 85 83 80 78 77 78 82 Dewpt 72 71 71 72 72 73 73 72 73 73 73 73 72 73 72 72 72 72 72 72 72 72 RH 70 74 77 82 82 74 70 65 72 79 82 85 82 74 67 65 70 77 82 85 82 72 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 18 23 21 20 20 21 23 19 19 20 21 20 23 23 19 18 19 19 21 21 19 17 Clouds FW CL SC SC SC B1 B1 SC SC SC FW FW FW B1 B1 B1 B1 CL CL FW FW B1 PoP 12hr 40 40 30 40 40 QPF 12hr 0.10 0.15 0.04 0.13 0.01-0.06 Snow 12hr MM MM MM Rain shwrs IS IS IS IS SC SC SC IS IS IS SC SC SC SC IS IS SC Heat index 88 83 81 80 87 90 91 89 84 81 80 87 90 91 88 83 80 80 87 Max heat 96 86 92 98 98 87 92 97 97 87 91 Date 05/21 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 85 78 85 78 85 78 85 78 85 Temp 85 80 78 82 85 80 78 82 85 80 78 82 85 80 78 82 85 80 Dewpt 72 72 73 73 73 73 73 73 73 73 72 73 72 73 73 73 71 71 PWind dir E E E E E E E E E Wind char BZ BZ BZ BZ BZ BZ BZ BZ BZ Avg clouds B1 B1 SC B1 SC SC SC SC SC B1 SC SC SC SC B1 B1 B2 B2 PoP 12hr 40 40 40 10 50 30 40 50 60 Rain shwrs SC SC SC SC SC IS IS IS SC SC SC SC SC SC SC SC SC SC $$ VIZ002-190800- St Croix- Including the cities of Christiansted, Frederiksted, Frederiksted Southeast, and Grove Place 231 PM AST Mon May 18 2026 Date 05/18/26 Tue 05/19/26 Wed 05/20/26 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 77 81 83 86 92 74 77 81 83 86 92 74 77 81 Temp 83 80 78 77 78 82 85 86 83 80 78 77 78 82 85 86 83 80 78 77 78 82 Dewpt 72 72 72 72 72 73 73 73 73 73 73 73 72 73 73 73 72 72 72 72 72 73 RH 70 77 82 85 82 74 67 65 72 79 85 87 82 74 67 65 70 77 82 85 82 74 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 17 18 18 17 16 19 19 19 18 18 19 18 19 19 18 18 18 17 16 17 13 14 Wind gust 27 2629 26 Clouds SC CL SC SC SC B1 SC SC SC SC SC SC SC SC SC B1 B1 FW FW CL CL SC PoP 12hr 30 30 20 40 10 QPF 12hr 0.08 0.13 0.06 0.11 0.01 Snow 12hr MM MM MM Rain shwrs IS IS IS IS SC SC SC IS IS IS IS IS IS IS SC SC IS Heat index 89 83 88 92 93 90 83 87 91 92 89 83 87 Max heat 100 87 93 102 101 87 93 102 100 87 93 Date 05/21 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 Mon 05/25/26 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 86 77 86 77 86 77 86 77 86 Temp 86 80 77 82 86 80 77 82 86 80 77 82 86 80 77 82 86 80 Dewpt 73 73 73 73 73 73 73 73 73 73 72 73 73 73 73 74 71 71 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 SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 30 20 30 30 40 40 50 50 50 Rain shwrs SC SC IS IS IS IS SC IS SC SC SC SC SC SC SC SC SC SC $$