FOCA52 TJSJ 180631 AFMSJU Area Forecast Matrices National Weather Service San Juan PR 231 AM AST Mon May 18 2026 PRZ001-182000- San Juan and Vicinity- Including the cities of Bayamon, Carolina, Catano, Guaynabo, San Juan, Toa Alta, Toa Baja, and Trujillo Alto 231 AM AST Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 81 87 90 70 74 81 81 87 90 70 74 81 80 87 90 Temp 76 82 86 87 84 78 76 74 76 82 86 87 84 79 76 74 76 82 86 87 83 78 Dewpt 72 73 72 71 71 71 71 71 70 72 73 72 72 72 72 72 71 73 73 73 72 72 RH 87 74 63 59 65 79 85 90 82 72 65 61 67 79 87 93 85 74 65 63 70 82 Wind dir E E E E E E E E SE E E E E E E E E E E E E E Wind spd 8 11 14 16 13 9 8 6 6 11 16 16 13 9 8 8 8 11 16 16 12 10 Wind gust 26 Clouds B1 B1 B1 B1 SC SC SC SC SC SC SC B1 B1 B1 B1 SC SC B1 B1 B1 B1 B1 PoP 12hr 40 30 50 50 50 QPF 12hr 0.12-0.33 0.04-0.13 0.14-0.29 0.09-0.19 0.11-0.24 Snow 12hr MM MM MM Rain shwrs SC SC SC SC SC IS SC IS IS SC IS SC SC SC SC IS IS SC SC SC SC SC Heat index 87 93 94 88 80 87 93 95 89 80 87 93 94 89 80 Max heat 92 101 99 86 90 102 100 87 91 101 100 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 74 87 74 87 75 87 75 87 Temp 74 82 87 79 74 82 87 79 75 82 87 79 75 82 87 79 Dewpt 71 72 73 72 72 73 73 72 72 73 73 72 72 72 73 72 PWind dir E E E E E E E E Wind char GN GN LT GN LT GN GN GN Avg clouds B1 B1 SC SC B1 B1 B2 B1 SC SC SC B1 B1 B2 B2 B1 PoP 12hr 50 40 50 50 20 50 60 60 Rain shwrs SC SC SC SC SC SC SC SC IS IS IS SC SC NM NM SC Tstms IS IS $$ PRZ002-182000- Northeast- Including the cities of Ceiba, Canovanas, Fajardo, Humacao, Loiza, Luquillo, Naguabo, and Rio Grande 231 AM AST Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 75 85 90 64 74 81 75 85 90 64 74 81 75 84 90 Temp 76 80 84 85 82 78 76 74 75 80 84 85 82 78 76 74 75 80 83 84 81 77 Dewpt 72 72 71 70 71 70 70 70 70 72 72 72 72 72 72 71 71 72 72 72 71 71 RH 87 77 65 61 69 76 82 87 84 77 67 65 72 82 87 90 87 77 70 67 72 82 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 11 14 14 13 12 10 12 10 10 13 16 13 12 10 11 11 10 13 16 14 13 12 Wind gust 24 26 21 26 21 23 24 21 24 23 21 25 24 24 Clouds B2 B2 B2 B1 SC SC B1 SC SC B1 SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B2 PoP 12hr 60 40 50 50 50 QPF 12hr 0.19-0.33 0.13 0.18-0.30 0.12-0.20 0.17-0.27 Snow 12hr MM MM MM Rain shwrs SC NM NM SC SC SC SC IS IS SC IS SC SC SC SC SC SC SC SC SC SC SC Heat index 85 89 90 8684 89 90 86 84 88 90 86 Max heat 90 97 96 87 90 98 97 87 89 98 97 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 74 85 74 85 74 84 74 84 Temp 74 80 85 78 74 80 85 78 74 80 84 78 74 80 84 78 Dewpt 71 71 72 72 72 72 72 72 72 72 72 72 71 72 72 72 PWind dir E E E E E E E E Wind char GN GN GN GN GN GN GN GN Avg clouds B2 B1 B1 B1 B1 B1 B1 B1 B1 SC SC B1 B2 B2 B2 B1 PoP 12hr 50 50 50 50 30 50 60 60 Rain shwrs SC SC SC SC SC SC SC SC SC SC SC SC SC NM NM NM Tstms IS $$ PRZ003-182000- Southeast- Including the cities of Arroyo, Guayama, Maunabo, Patillas, Salinas, and Yabucoa 231 AM AST Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 75 85 90 66 74 81 75 85 90 66 74 81 75 84 90 Temp 75 80 84 85 82 77 75 74 75 80 84 85 82 77 75 74 75 80 83 84 81 77 Dewpt 71 71 71 69 69 70 69 69 69 71 70 71 71 71 71 71 70 71 71 70 71 71 RH 87 74 65 59 65 79 82 84 82 74 63 63 69 82 87 90 84 74 67 63 72 82 Wind dir E E E E E E E E E E E E E NE E E E E E E E E Wind spd 10 12 13 14 12 10 9 9 9 12 14 13 11 9 9 9 10 12 16 14 11 11 Wind gust 20 23 26 29 24 20 19 24 28 26 23 20 19 20 25 31 29 25 21 Clouds B1 B1 B1 SC SC SC SC SC SC SC FW SC SC B1 B1 B1 B1 B1 B1 SC SC B1 PoP 12hr 50 30 50 50 50 QPF 12hr 0.11-0.22 0.04-0.13 0.05-0.19 0.09-0.20 0.06-0.17 Snow 12hr MM MM MM Rain shwrs SC SC SC SC IS IS SC IS IS SC IS IS IS SC SC SC SC SC SC SC SC SC Heat index 84 88 89 85 83 88 90 85 83 87 88 85 Max heat 90 96 95 86 90 97 96 87 89 95 95 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 74 84 74 85 74 84 74 85 Temp 74 80 84 77 74 80 85 78 74 80 84 78 74 80 85 78 Dewpt 70 69 70 71 71 71 71 71 71 72 71 71 71 71 71 71 PWind dir E E E E E E E E Wind char GN GN GN GN GN GN GN GN Avg clouds B1 B1 SC SC B1 B1 SC B1 B1 SC SC SC B1 B1 B1 B1 PoP 12hr 50 40 40 50 30 50 50 50 Rain shwrs SC SC SC SC SC SC SC SC SC SC IS SC SC SC SC SC Tstms IS IS $$ PRZ004-182000- Eastern Interior- Including the cities of Aguas Buenas, Caguas, Cayey, Cidra, Comerio, Gurabo, Juncos, Las Piedras, and San Lorenzo 231 AM AST Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 75 84 90 65 70 73 75 83 90 65 70 74 75 83 89 Temp 73 78 82 84 80 75 72 70 72 78 82 83 80 75 72 70 72 78 81 83 79 75 Dewpt70 71 71 69 69 69 69 69 68 71 71 70 70 70 70 70 69 71 71 71 70 70 RH 90 79 69 61 69 82 90 97 87 79 69 65 72 84 93100 90 79 72 67 74 84 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 5 10 11 12 10 6 5 5 5 10 13 12 10 5 5 4 5 11 13 13 10 6 Clouds B1 B1 B1 B1 SC SC SC SC SC SC FW SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 50 30 50 50 50 QPF 12hr 0.13-0.32 0.05-0.14 0.09-0.29 0.10-0.20 0.09-0.24 Snow 12hr MM MM MM Rain shwrs SC SC SC SC IS SC SC SC IS SC IS SC SC SC SC SC SC SC SC SC SC SC Heat index 80 86 87 82 80 86 88 82 85 87 81 Max heat 90 96 96 89 97 97 89 97 95 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 70 83 71 83 71 83 71 83 Temp 70 78 83 75 71 78 83 75 71 78 83 75 71 78 83 75 Dewpt 69 70 71 70 70 71 71 71 70 71 71 70 70 71 70 70 PWind dir E E E E E E E E Wind char LT GN LT GN LT GN LT GN Avg clouds B1 B1 SC SC B1 B1 B1 B1 B1 SC SC B1 B1 B2 B2 B1 PoP 12hr 50 40 40 50 30 50 60 60 Rain shwrs SC SC SC SC SC SC SC SC SC SC IS SC SC SC SC SC Tstms IS IS $$ PRZ005-182000- North Central- Including the cities of Arecibo, Barceloneta, Dorado, Florida, Manati, Vega Alta, and Vega Baja 231 AM AST Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 83 88 92 69 72 81 83 88 92 70 72 81 83 88 92 Temp 75 82 86 88 84 77 75 72 74 81 86 88 84 78 75 73 74 82 86 88 84 78 Dewpt 71 73 73 73 72 70 70 70 69 72 73 73 73 72 72 71 70 73 73 73 73 71 RH 87 74 65 61 67 79 84 93 84 74 65 61 70 82 90 93 87 74 65 61 70 79 Wind dir E E E E E E E SE SE E E E E E E E E E E E E E Wind spd 8 10 14 17 16 11 8 6 6 9 14 17 16 11 8 8 8 10 16 17 14 10 Wind gust 25 31 29 25 32 28 23 26 28 28 20 Clouds SC SC SC SC SC FW FW FW FW SC FW B1 B1 SC SC SC SC SC SC B1 B1 B1 PoP 12hr 30 10 50 30 40 QPF 12hr 0.08-0.33 0.00-0.06 0.10-0.52 0.01-0.13 0.09-0.54 Snow 12hr MM MM MM Rain shwrs IS IS IS SC SC IS IS IS IS IS IS SC SC IS IS IS IS IS IS SC SC SC Tstms IS IS Heat index 87 94 96 89 86 94 96 90 87 94 96 90 Max heat 92 103 102 86 91 105 103 87 92 105 102 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 72 88 72 88 73 88 73 88 Temp 73 82 88 78 73 82 88 78 73 82 88 78 73 82 88 78 Dewpt 70 72 73 71 71 73 74 72 71 73 74 72 71 72 73 72 PWind dir E E E E E E E E Wind char GN GN LT GN LT GN GN BZ Avg clouds SC SC SC B1 SC SC B1 B1 SC SC SC SC B1 B1 B2 B1 PoP 12hr 40 50 30 60 20 30 50 50 Rain shwrs SC IS IS SC IS IS NM NM IS IS IS SC SC SC SC SC Tstms IS IS IS IS IS IS $$ PRZ006-182000- Central Interior- Including the cities of Aibonito, Barranquitas, Ciales, Coamo, Corozal, Jayuya, Morovis, Naranjito, Orocovis, and Villalba 231 AM AST Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 75 82 91 59 69 73 75 82 90 60 69 73 75 81 90 Temp 72 77 81 82 78 73 71 69 70 76 80 82 78 73 71 69 71 76 80 81 78 73 Dewpt 68 69 69 68 67 67 67 67 66 68 69 68 68 68 68 68 67 69 69 69 68 68 RH 87 76 67 63 69 81 87 93 87 76 69 63 71 84 90 97 87 79 69 67 71 84 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 4 8 11 11 10 5 4 5 4 8 12 11 10 5 4 4 4 9 12 12 10 5 Wind gust 25 28 21 27 25 21 20 29 27 21 Clouds FW SC SC B1 SC SC CL SC SC SC CL SC SC B1 B1 SC SC SC SC SC SC SC PoP 12hr 30 10 40 40 30 QPF 12hr 0.10-0.37 0.01-0.07 0.05-0.21 0.01-0.13 0.05-0.13 Snow 12hr MM MM MM Rain shwrs IS SC IS SC IS IS IS IS IS SC SC SC SC IS IS IS IS SC SC SC Heat index 83 85 80 83 85 80 83 84 Max heat 89 97 95 87 98 96 88 98 96 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 69 82 69 82 70 82 70 82 Temp 69 77 82 73 69 77 82 74 70 77 82 74 70 77 82 74 Dewpt 68 68 69 68 68 69 69 69 68 69 69 68 68 68 69 68 PWind dir E E E E E E E E Wind char LT GN LT GN LT GN LT GN Avg clouds SC SC SC SC SC SC SC B1 SC SC SC SC B1 B1 B1 B1 PoP 12hr 30 30 20 50 30 30 50 50 Rain shwrs IS IS IS SC IS IS IS SC IS IS IS SC SC SC SC SC Tstms IS IS IS IS $$ PRZ007-182000- Ponce and Vicinity- Including the cities of Guayanilla, Juana Diaz, Yauco, Penuelas, Ponce, and Santa Isabel 231 AM AST Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 75 86 92 61 72 81 75 86 92 62 73 81 75 85 92 Temp 75 81 84 86 82 77 74 72 74 80 84 86 82 77 75 73 74 80 84 85 82 77 Dewpt 68 69 69 69 69 68 67 66 66 68 69 69 70 69 68 68 68 68 70 68 69 69 RH 79 67 61 57 65 74 79 81 76 67 61 57 67 76 79 84 82 67 63 57 65 76 Wind dir E E E SE E E NE E E E E SE E E E E E E E SE E E Wind spd 5 9 13 13 11 8 5 6 5 9 13 13 12 8 5 5 5 10 14 14 12 8 Wind gust 23 29 31 25 21 21 28 28 27 20 23 32 31 28 21 Clouds FW SC SC SC SC FW CL FW FW FW CL SC SC SC SC FW FW SC SC SC SC SC PoP 12hr 30 5 10 10 10 QPF 12hr 0.05-0.46 0.01 0.02-0.18 0.01-0.09 0.04-0.15 Snow 12hr MM MM MMRain shwrs IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS Tstms IS Heat index 84 88 90 85 83 88 90 86 82 88 89 85 Max heat 90 99 98 85 88 99 98 86 88 98 97 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 73 86 73 86 73 86 73 86 Temp 73 80 86 77 73 80 86 77 73 80 86 77 73 81 86 77 Dewpt 68 67 68 70 68 69 71 70 69 69 70 69 68 68 70 68 PWind dir E E E E E E E E Wind char 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 B1 PoP 12hr 30 30 10 20 20 20 30 40 Rain shwrs IS IS SC IS IS IS IS IS IS IS IS IS IS IS SC SC $$ PRZ008-182000- Northwest- Including the cities of Aguadilla, Camuy, Hatillo, Isabela, and Quebradillas 231 AM AST Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 83 86 93 67 71 81 83 86 92 67 71 81 83 87 93 Temp 74 80 85 86 82 76 73 71 72 80 85 86 82 76 74 71 73 80 85 87 82 76 Dewpt 68 71 72 73 72 71 69 68 67 69 71 73 74 72 71 69 68 70 72 74 74 72 RH 82 74 65 65 72 85 87 90 84 69 63 65 77 87 90 93 84 72 65 65 77 87 Wind dir E E E NE E E E E E E E E E E E E E E E E E E Wind spd 9 10 12 16 16 12 10 8 9 10 12 17 13 14 10 10 9 11 13 17 13 12 Wind gust 19 25 31 29 24 20 19 24 32 27 27 20 20 19 26 31 27 24 Clouds FW FW FW B1 B1 FW CL CL CL FW CL B2 B2 FW FW FW FW SC SC B2 B2 B1 PoP 12hr 50 10 60 10 60 QPF 12hr 0.09-0.81 0.02 0.31-0.74 0.02 0.39-0.76 Snow 12hr MM MM MM Rain shwrs SC SC IS IS NM NM IS IS IS IS NM NM SC Tstms IS IS IS IS IS IS Heat index 84 91 94 87 83 90 94 88 83 91 94 88 Max heat 91 106 103 87 89 105 104 87 90 106 105 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 71 87 71 87 71 86 72 87 Temp 71 80 87 76 71 80 87 76 72 80 86 77 72 80 87 77 Dewpt 69 70 73 72 69 71 74 73 70 71 74 72 70 70 73 72 PWind dir E E E E E E E E Wind char GN GN LT GN GN GN GN BZ Avg clouds SC SC SC B1 SC SC SC B2 B1 SC SC SC SC SC B1 B1 PoP 12hr 40 60 20 60 40 30 40 60 Rain shwrs SC IS IS NM IS IS NM NM SC SC IS IS SC SC NM NM Tstms IS IS IS IS IS IS $$ PRZ009-182000- Western Interior- Including the cities of Adjuntas, Lares, Las Marias, Maricao, Sabana Grande, San Sebastian, and Utuado 231 AM AST Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 1821 00 03 06 09 12 15 18 21 00 Max/Min 75 84 93 63 69 73 75 84 93 63 69 74 75 83 93 Temp 72 78 82 84 80 74 71 69 70 77 82 84 80 74 71 69 71 77 82 83 79 74 Dewpt 67 69 69 70 70 69 67 66 65 67 69 70 70 69 68 67 67 68 69 70 70 69 RH 84 74 65 63 72 84 87 90 84 71 65 63 72 84 90 93 87 74 65 65 74 84 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 4 5 8 8 5 4 4 4 4 6 9 9 6 5 4 4 4 6 9 9 6 5 Wind gust 28 28 16 28 28 26 29 29 25 21 Clouds CL CL FW B2 B2 FW CL CL CL FW CL B1 B2 FW FW CL CL SC SC B1 B1 SC PoP 12hr 60 0 50 10 40 QPF 12hr 0.09-0.99 0.01 0.04-0.74 0.01 0.05-0.65 Snow 12hr MM MM MM Rain shwrs NM NM IS SC NM IS IS IS IS SC SC IS Tstms IS IS IS IS IS IS Heat index 80 86 88 82 85 88 82 85 88 82 Max heat 90 106 103 89 106 105 90 106 105 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 69 84 69 84 69 84 70 84 Temp 69 78 84 74 69 78 84 74 70 78 84 74 70 78 84 74 Dewpt 67 68 70 69 67 68 71 70 68 69 71 69 68 68 70 69 PWind dir E E E E E E E E Wind char LT LT LT LT LT LT LT LT Avg clouds SC SC SC B1 SC SC SC B1 B1 SC SC B1 SC SC B1 B1 PoP 12hr 10 60 10 40 40 40 30 60 Rain shwrs IS IS IS NM IS IS IS SC SC SC SC SC IS IS SC NM Tstms IS IS IS IS IS IS $$ PRZ010-182000- Mayaguez and Vicinity- Including the cities of Aguada, Anasco, Hormigueros, Mayaguez, Moca, Rincon, and San German 231 AM AST Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 75 89 93 65 72 81 75 89 93 66 73 81 75 89 93 Temp 75 82 87 89 84 78 75 73 74 82 87 89 84 78 75 73 75 82 87 89 84 78 Dewpt 69 72 74 75 74 72 70 69 68 71 72 74 74 73 71 70 69 72 73 74 74 73 RH 82 72 65 64 72 82 84 87 82 69 61 61 72 85 87 90 82 72 63 61 72 85 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 8 6 6 8 8 6 6 9 9 8 8 9 8 9 8 8 8 8 8 9 8 9 Wind gust 19 19 21 21 23 18 24 20 26 23 20 23 20 21 21 21 18 20 20 24 24 24 Clouds CL CL CL B2 B2 SC FW CL CL FW CL B1 B1 SC SC CL CL SC SC B1 B1 SC PoP 12hr 60 20 60 20 50 QPF 12hr 0.07-1.15 0.01-0.09 0.01-0.74 0.01-0.06 0.04-0.77 Snow 12hr MM MM MM Rain shwrs NM NM IS IS NM NM IS IS IS IS NM NM IS Tstms IS IS IS IS IS IS Heat index 87 95 99 91 86 94 98 92 87 95 99 92 Max heat 93 110 108 87 91 110 108 87 93 110 109 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max72 89 73 89 73 89 73 89 Temp 73 82 89 78 73 82 89 78 73 82 89 78 74 82 89 78 Dewpt 69 71 74 73 70 72 75 73 71 72 75 73 70 71 74 73 PWind dir E E E E E E E E Wind char GN GN LT LT LT GN GN GN Avg clouds SC SC SC B1 SC SC SC B1 B1 B1 SC B1 SC SC SC B2 PoP 12hr 30 60 30 50 50 40 20 60 Rain shwrs IS IS IS NM IS IS IS SC SC SC SC SC IS IS IS SC Tstms IS IS IS IS IS IS IS IS IS $$ PRZ011-182000- Southwest- Including the cities of Cabo Rojo, Guanica, and Lajas 231 AM AST Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 83 90 93 71 73 81 83 91 93 72 74 81 83 90 93 Temp 76 84 89 90 86 79 76 74 75 83 89 91 86 79 77 75 76 84 88 90 86 79 Dewpt 69 70 71 72 71 71 69 68 67 69 71 71 72 72 70 69 69 69 72 71 72 72 RH 79 63 56 56 61 77 79 82 76 63 56 52 63 79 79 82 79 61 59 54 63 79 Wind dir E E E SE E E E E E E E SE SE E E E E E E SE E E Wind spd 9 9 17 17 11 12 9 9 9 12 17 17 16 12 9 6 6 10 18 17 16 14 Wind gust 20 20 33 34 24 27 23 21 21 25 32 34 32 29 21 24 35 34 32 34 Clouds CL FW FW SC SC FW SC CL FW FW CL SC SC FW FW CL CL SC SC SC SC SC PoP 12hr 20 20 10 10 10 QPF 12hr 0.05-0.61 0.03 0.02-0.16 0.01 0.04-0.26 Snow 12hr MM MM MM Rain shwrs IS IS IS IS IS SC IS IS IS IS IS IS IS IS IS IS Heat index 88 95 98 91 81 87 95 97 92 83 87 95 97 92 82 Max heat 90 103 101 87 89 102 101 87 90 102 101 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 74 90 74 90 74 90 74 91 Temp 75 84 90 80 75 84 90 80 75 84 90 80 75 84 91 80 Dewpt 70 69 70 73 71 71 73 73 70 71 73 72 70 69 72 70 PWind dir E E E E E E E E Wind char GN BZ GN GN GN BZ GN GN Avg clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC B1 PoP 12hr 30 30 10 20 20 20 10 40 Rain shwrs IS IS IS IS IS IS IS IS SC IS IS IS IS IS SC SC $$ PRZ012-182000- Culebra- Including the city of Culebra 231 AM AST Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 83 86 91 75 79 81 83 86 91 75 78 81 83 86 91 Temp 79 83 85 86 84 81 80 79 79 83 85 86 84 81 80 78 79 83 85 86 84 81 Dewpt 73 74 73 73 73 72 72 73 72 74 74 74 74 74 73 73 73 74 73 73 73 73 RH 82 74 67 65 70 74 77 82 79 74 70 68 72 79 79 85 82 74 67 65 70 77 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 21 23 20 17 16 19 21 18 20 19 20 19 18 19 20 19 20 21 21 18 19 20 Clouds B2 B2 B1 SC SC FW SC SC SC B1 B1 SC B1 SC SC SC SC SC SC B2 B2 B1 PoP 12hr 60 40 40 20 50 QPF 12hr 0.16 0.11 0.19 0.050.20 Snow 12hr MM MM MM Rain shwrs SC NM SC IS IS IS SC IS IS SC SC SC SC IS IS IS IS IS IS SC SC SC Heat index 82 89 92 93 90 85 83 81 82 89 93 94 91 86 83 81 82 89 92 94 90 85 Max heat 93 99 98 87 93 100 99 88 93 99 98 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 78 86 79 86 79 86 79 86 Temp 78 83 86 81 79 83 86 81 79 83 86 81 79 83 86 81 Dewpt 73 73 74 73 73 74 74 74 74 74 74 74 73 74 74 74 PWind dir E E E E E E E E Wind char BZ BZ BZ BZ BZ BZ BZ BZ Avg clouds B1 B1 B1 B1 B1 B1 B1 SC B1 SC SC B1 B1 B1 B1 B1 PoP 12hr 50 50 50 50 40 50 40 40 Rain shwrs SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC $$ PRZ013-182000- Vieques- Including the city of Vieques 231 AM AST Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 86 74 77 81 86 74 77 81 86 Temp 78 82 85 86 83 80 78 77 78 82 85 86 83 80 78 77 78 82 85 86 83 80 Dewpt 72 73 72 72 72 72 71 72 72 73 73 73 73 73 72 73 72 73 73 72 72 72 RH 82 74 65 63 70 77 79 85 82 74 67 65 72 79 82 87 82 74 67 63 70 77 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 20 21 19 17 17 18 21 18 19 18 19 18 18 18 19 19 19 20 20 18 19 20 Clouds B1 B2 B2 SC SC FW B1 SC SC B1 SC B1 B1 SC SC B1 B1 SC SC B2 B2 B1 PoP 12hr 60 40 40 30 50 QPF 12hr 0.17 0.09 0.19-0.29 0.07-0.14 0.20 Snow 12hr MM MM MM Rain shwrs SC NM NM IS IS IS SC IS IS SC SC SC SC SC SC SC SC SC SC SC SC SC Heat index 88 91 92 88 83 88 91 93 89 83 87 91 92 89 83 Max heat 90 96 94 87 90 96 95 87 90 96 94 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 77 86 77 86 77 86 77 86 Temp 77 82 86 80 77 82 86 80 77 82 86 80 77 82 86 80 Dewpt 72 73 73 73 73 73 73 73 73 73 73 73 72 73 73 73 PWind dir E E E E E E E E Wind char BZ BZ BZ BZ BZ BZ BZ BZ Avg clouds B1 B1 B1 B1 B1 B1 B1 SC B1 SC SC B1 B1 B1 B1 B1 PoP 12hr 40 40 50 50 40 40 40 60 Rain shwrs SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC $$ VIZ001-182000- St.Thomas...St. John...and Adjacent Islands- Including the cities of Anna's Retreat, Charlotte Amalie, Charlotte Amalie East, Charlotte Amalie West, and Cruz Bay 231 AM AST Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 83 85 90 72 78 81 83 85 90 72 78 81 83 85 90 Temp 78 82 84 85 83 80 79 78 78 82 84 85 83 80 79 78 78 82 84 85 83 80 Dewpt 72 72 72 71 72 71 71 72 72 73 73 72 73 73 73 73 72 73 72 72 72 72 RH 82 72 67 63 70 74 77 82 82 74 70 65 72 79 82 85 82 74 67 65 70 77 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 23 23 20 18 16 20 21 21 18 21 21 19 18 20 20 19 21 21 20 20 19 19 Clouds B2 B1 SC FW FW CL SC SC SC B1 B1 SC SC SC SC FW FW B1 B1 B1 B1 B1 PoP 12hr 50 40 40 30 40 QPF 12hr 0.05-0.13 0.10 0.15 0.03 0.14 Snow 12hr MM MM MM Rain shwrs NM SC IS IS IS IS IS IS SC SC IS IS IS IS SC SC SC SC SC Heat index 80 87 89 90 88 83 81 80 87 90 91 89 84 81 80 87 90 91 88 83 Max heat 91 96 96 86 92 98 98 87 92 97 97 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 77 85 78 85 78 85 78 85 Temp 77 82 85 80 78 82 85 80 78 82 85 80 78 82 85 80 Dewpt 72 72 72 72 73 73 73 73 73 73 73 73 72 73 72 73 PWind dir E E E E E E E E Wind char BZ BZ BZ BZ BZ BZ BZ BZ Avg clouds B1 B1 B1 B1 SC B1 SC SC SC SC SC B1 SC SC SC SC PoP 12hr 40 40 40 40 10 50 30 40 Rain shwrs SC SC SC SC SC SC SC IS IS IS SC SC SC SC SC SC $$ VIZ002-182000- St Croix- Including the cities of Christiansted, Frederiksted, Frederiksted Southeast, and Grove Place 231 AM AST Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 83 86 92 74 77 81 83 86 92 74 77 81 83 86 92 Temp 78 82 85 86 83 80 78 77 78 82 85 86 83 80 78 77 78 82 85 86 83 80 Dewpt 73 73 73 72 72 72 72 72 72 73 73 73 73 73 73 73 72 73 73 73 72 72 RH 85 74 67 63 70 77 82 85 82 74 67 65 72 79 85 87 82 74 67 65 70 77 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 19 21 19 18 14 17 18 16 14 18 19 18 17 18 18 18 18 19 20 17 18 17 Wind gust 28 28 28 28 29 Clouds B1 B2 SC SC SC CL SC SC SC B1 B1 SC SC SC SC SC SC SC SC B1 B1 B1 PoP 12hr 60 30 30 20 40 QPF 12hr 0.11 0.08 0.13 0.05 0.12 Snow 12hr MM MM MM Rain shwrs SC NM IS IS IS IS IS IS SC SC IS IS IS IS IS IS IS IS SC SC SC Heat index 87 91 92 89 83 88 92 93 90 83 87 91 92 89 83 Max heat 93 101 100 87 93 102 101 87 93 102 100 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 77 86 77 86 77 86 77 86 Temp 77 82 86 80 77 82 86 80 77 82 86 80 77 82 86 80 Dewpt 72 73 73 73 73 73 73 73 73 73 73 73 72 73 73 73 PWind dir E E E E E E E E Wind char BZ BZ GN BZ BZ BZ BZ BZ Avg clouds SC SC SC SC SC SC SC SC SC SC SC B1 B1 B1 B1 B1 PoP 12hr 40 30 20 30 30 40 40 50 Rain shwrs SC IS SC SC IS IS IS IS SC IS SC SC SC SC SC SC $$