663
FOCA52 TJSJ 080631
AFMSJU
AREA FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN JUAN PR
231 AM AST TUE SEP 8 2026
PRZ001-082000-
SAN JUAN AND VICINITY-
INCLUDING THE CITIES OF BAYAMON, CAROLINA, CATANO, GUAYNABO,
SAN JUAN, TOA ALTA, TOA BAJA, AND TRUJILLO ALTO
231 AM AST TUE SEP 8 2026
DATE TUE 09/08/26 WED 09/09/26 THU 09/10/26
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 82 88 91 73 78 82 81 86 88 73 78 82 82 87 91
TEMP 78 84 87 88 84 81 80 79 78 82 85 86 82 80 79 78 78 83 87 87 83 80
DEWPT 76 77 78 77 77 76 76 76 75 77 78 78 78 77 77 76 76 77 78 77 78 77
RH 94 80 75 70 80 85 88 91 91 85 80 77 88 91 94 94 94 82 75 72 85 91
WIND DIR SE SE E E E E E E E E E E E E E E E E E E E E
WIND SPD 5 8 14 14 13 9 9 8 8 11 16 14 13 10 9 9 10 11 16 16 12 9
WIND GUST 24
CLOUDS SC SC B1 B1 B1 SC SC SC B1 B1 B1 SC B1 SC SC B1 B1 B1 B1 B1 B1 SC
POP 12HR 40 50 50 50 50
QPF 12HR 0.18-0.28 0.09-0.18 0.31-0.42 0.10-0.27 0.17-0.44
SNOW 12HR MM MM MM
RAIN SHWRS SC SC SC SC SC SC IS SC SC SC SC SC SC SC SC SC SC SC SC SC IS
TSTMS IS IS IS IS IS IS IS
OBVIS H H
HEAT INDEX 81 94100100 93 87 84 81 80 91 97 97 91 86 83 81 81 93 99100 93 86
MAX HEAT 100 108 107 94 96 106 105 94 100 106 105
HEAT Y Y
DATE FRI 09/11/26 SAT 09/12/26 SUN 09/13/26 MON 09/14/26
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 88 77 88 78 88 77 89
TEMP 78 84 88 81 78 84 88 81 79 84 88 80 78 84 89 80
DEWPT 76 77 77 76 75 76 76 76 75 75 76 76 75 76 76 75
PWIND DIR E E E E E E E E
WIND CHAR GN GN GN GN GN GN LT GN
AVG CLOUDS SC SC SC FW FW FW FW SC SC SC SC SC FW FW SC SC
POP 12HR 30 30 5 30 30 30 30 30
RAIN SHWRS IS SC SC IS IS SC SC SC IS SC IS IS SC SC
TSTMS IS
PRZ002-082000-
NORTHEAST-
INCLUDING THE CITIES OF CEIBA, CANOVANAS, FAJARDO, HUMACAO,
LOIZA, LUQUILLO, NAGUABO, AND RIO GRANDE
231 AM AST TUE SEP 8 2026
DATE TUE 09/08/26 WED 09/09/26 THU 09/10/26
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 74 87 92 67 78 82 75 84 88 67 78 82 76 86 90
TEMP 78 83 86 87 83 81 79 79 78 81 83 84 81 80 79 78 78 83 86 86 82 79
DEWPT 75 76 75 75 75 74 75 74 75 75 76 76 76 75 75 75 75 76 76 76 76 75
RH 91 80 70 68 77 79 88 85 91 82 80 77 85 85 88 91 91 80 72 72 82 88
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 10 13 13 12 11 11 11 11 16 17 14 13 12 12 13 14 16 16 16 12 10
WIND GUST 20 21 23 24 24 27 24 25 26 27 27 20
CLOUDS SC B1 B1 B1 B1 SC B1 SC B2 B2 B2 SC B2 B1 B1 B2 B2 B2 B2 B2 B2 B1
POP 12HR 50 60 60 60 60
QPF 12HR 0.22-0.29 0.19 0.42 0.27 0.45
SNOW 12HR MM MM MM
RAIN SHWRS IS SC SC SC SC SC SC SC NM NM NM SC SC SC SC NM NM NM NM NM NM SC
TSTMS IS IS IS IS IS IS IS
OBVIS H
HEAT INDEX 81 91 96 96 91 86 84 81 81 88 92 93 88 85 83 81 81 91 95 96 90 84
MAX HEAT 99 106 104 94 96 100 100 93 98 105 104
HEAT Y Y
DATE FRI 09/11/26 SAT 09/12/26 SUN 09/13/26 MON 09/14/26
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 76 87 78 87 78 85 77 86
TEMP 77 83 87 81 78 83 87 81 79 82 85 80 78 82 86 80
DEWPT 75 76 75 74 74 74 74 74 73 74 74 74 73 74 74 73
PWIND DIR E E E E E E E E
WIND CHAR GN GN GN GN GN GN GN GN
AVG CLOUDS B1 SC SC SC SC SC SC SC SC SC B1 SC CL FW B1 B1
POP 12HR 40 30 10 30 30 30 30 40
RAIN SHWRS SC SC SC IS IS IS IS SC SC SC SC SC SC SC SC
TSTMS IS IS
PRZ003-082000-
SOUTHEAST-
INCLUDING THE CITIES OF ARROYO, GUAYAMA, MAUNABO, PATILLAS,
SALINAS, AND YABUCOA
231 AM AST TUE SEP 8 2026
DATE TUE 09/08/26 WED 09/09/26 THU 09/10/26
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 78 87 91 69 77 82 77 84 89 69 77 82 78 86 91
TEMP 78 83 86 87 83 80 79 78 77 81 84 84 81 79 78 77 77 82 85 86 82 79
DEWPT 75 76 76 75 75 75 75 74 74 76 77 76 76 75 76 75 75 76 76 76 77 76
RH 91 80 72 68 77 85 88 88 90 85 80 77 85 88 94 94 94 82 75 72 85 91
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 8 10 13 13 12 11 11 9 10 13 16 14 12 10 10 10 11 13 14 14 11 9
WIND GUST 28 26 24 21 23 19 20 25 29 27 24 20 20 21 23 25 29 29 25 19
CLOUDS SC B1 SC SC SC SC SC SC B1 B2 B2 SC B1 B1 B1 B2 B2 B2 B2 B1 B1 B1
POP 12HR 40 60 60 60 60
QPF 12HR 0.05-0.23 0.09-0.19 0.31-0.42 0.17-0.28 0.18-0.46
SNOW 12HR MM MM MM
RAIN SHWRS IS SC SC IS IS IS IS IS SC NM NM SC SC SC SC NM NM SC SC SC SC SC
TSTMS IS IS IS IS IS IS
OBVIS H
HEAT INDEX 81 92 97 97 91 85 82 80 88 93 94 88 84 81 90 96 96 90 83
MAX HEAT 101 109 107 92 95 102 101 92 99 105 104
HEAT Y Y
DATE FRI 09/11/26 SAT 09/12/26 SUN 09/13/26 MON 09/14/26
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 76 86 77 86 77 86 77 86
TEMP 77 82 86 80 77 82 86 80 78 82 86 79 77 82 86 79
DEWPT 75 76 76 75 74 75 74 74 73 74 74 74 74 74 74 74
PWIND DIR E E E E NE E NE E
WIND CHAR GN GN GN GN GN GN GN GN
AVG CLOUDS B1 SC SC SC FW FW SC SC SC SC SC SC CL FW SC SC
POP 12HR 40 30 10 30 30 30 30 40
RAIN SHWRS SC SC IS IS IS IS IS IS IS SC SC IS SC SC SC
TSTMS IS
PRZ004-082000-
EASTERN INTERIOR-
INCLUDING THE CITIES OF AGUAS BUENAS, CAGUAS, CAYEY, CIDRA,
COMERIO, GURABO, JUNCOS, LAS PIEDRAS, AND SAN LORENZO
231 AM AST TUE SEP 8 2026
DATE TUE 09/08/26 WED 09/09/26 THU 09/10/26
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 77 86 91 69 74 78 77 83 87 69 75 78 77 85 90
TEMP 75 81 85 86 81 78 76 75 74 80 82 83 80 77 76 75 75 81 84 85 80 77
DEWPT 74 75 75 74 74 74 74 73 73 75 75 74 75 74 74 74 73 75 75 74 75 74
RH 97 82 72 68 79 88 94 94 97 85 79 74 85 90 94 97 94 82 74 70 85 90
WIND DIR SE E E E E E E E E E E E E E E E E E E E E E
WIND SPD 5 8 11 12 11 6 6 5 5 11 13 13 11 5 5 5 8 11 13 13 11 6
CLOUDS SC B1 B1 SC B1 SC SC SC B1 B2 B2 SC B1 B1 B1 B1 B1 B2 B2 B1 B1 SC
POP 12HR 40 50 60 50 50
QPF 12HR 0.10-0.29 0.08-0.19 0.32-0.43 0.12-0.28 0.18-0.45
SNOW 12HR MM MM MM
RAIN SHWRS SC SC SC SC IS IS IS SC SC SC SC SC SC SC SC SC SC SC SC SC SC
TSTMS IS IS IS IS IS IS IS
OBVIS H H
HEAT INDEX 87 93 93 86 80 84 90 90 83 86 93 93 85
MAX HEAT 99 106 103 88 93 101 99 87 96 104 102
HEAT Y Y
DATE FRI 09/11/26 SAT 09/12/26 SUN 09/13/26 MON 09/14/26
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 85 74 85
TEMP 74 80 85 77 75 80 85 78 75 80 85 77 75 80 85 77
DEWPT 74 75 74 73 73 74 72 73 72 73 72 73 72 73 73 73
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 FW FW SC SC SC SC SC SC FW FW SC B1
POP 12HR 30 30 10 30 30 30 30 30
RAIN SHWRS IS SC SC IS IS IS SC SC SC SC SC SC SC SC
TSTMS IS
PRZ005-082000-
NORTH CENTRAL-
INCLUDING THE CITIES OF ARECIBO, BARCELONETA, DORADO, FLORIDA,
MANATI, VEGA ALTA, AND VEGA BAJA
231 AM AST TUE SEP 8 2026
DATE TUE 09/08/26 WED 09/09/26 THU 09/10/26
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 91 74 77 82 86 74 77 82 83 88 91
TEMP 77 83 87 88 83 80 79 78 77 82 85 86 82 80 78 78 77 83 87 88 83 80
DEWPT 75 77 78 78 77 76 76 75 74 77 78 78 77 77 77 76 75 77 78 78 78 77
RH 94 82 75 72 82 88 91 91 90 85 80 77 85 91 97 94 94 82 75 72 85 91
WIND DIR SE E E E E E E SE E E E E E E E E E E E E E E
WIND SPD 5 6 13 16 14 10 9 6 6 9 13 17 17 12 11 10 8 9 14 17 13 9
WIND GUST 24 27 28 20 28 29 24 25 28 25
CLOUDS FW FW SC SC SC SC FW FW SC SC FW SC B1 SC SC SC SC SC SC B1 B1 FW
POP 12HR 30 30 40 20 30
QPF 12HR 0.08-0.24 0.02-0.14 0.29-0.67 0.02-0.15 0.16-0.62
SNOW 12HR MM MM MM
RAIN SHWRS IS IS IS SC IS IS IS IS IS SC SC IS IS IS IS IS IS SC SC
TSTMS IS IS IS IS
OBVIS H H H H
HEAT INDEX 93101102 93 86 80 90 98 99 91 85 80 93100101 93 85
MAX HEAT 99 109 108 94 97 108 105 95 100 108 106
HEAT Y Y
DATE FRI 09/11/26 SAT 09/12/26 SUN 09/13/26 MON 09/14/26
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 76 89 76 89 77 88 76 89
TEMP 77 84 89 80 77 84 89 80 78 83 88 79 77 83 89 79
DEWPT 76 77 77 76 75 76 76 75 74 76 76 75 74 76 77 76
PWIND DIR E E E E E E E E
WIND CHAR GN GN GN GN GN GN GN GN
AVG CLOUDS FW FW SC FW CL CL FW SC FW FW FW SC SC SC SC SC
POP 12HR 20 20 0 10 5 20 20 20
RAIN SHWRS IS IS IS IS IS IS IS IS IS IS IS IS IS
PRZ006-082000-
CENTRAL INTERIOR-
INCLUDING THE CITIES OF AIBONITO, BARRANQUITAS, CIALES, COAMO,
COROZAL, JAYUYA, MOROVIS, NARANJITO, OROCOVIS, AND VILLALBA
231 AM AST TUE SEP 8 2026
DATE TUE 09/08/26 WED 09/09/26 THU 09/10/26
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 74 84 92 64 73 78 76 82 89 65 74 77 75 84 91
TEMP 73 79 83 84 79 76 75 74 73 79 81 82 79 76 75 74 74 79 83 84 79 76
DEWPT 72 74 74 73 72 72 72 72 71 73 74 73 73 73 73 73 72 74 74 73 74 73
RH 97 85 74 70 79 87 90 93 93 82 79 74 82 90 94 97 93 85 74 70 85 90
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 10 11 10 5 5 4 4 9 12 12 11 5 4 4 5 8 12 12 10 5
WIND GUST 28 26 23 19 29 26 21 28 27 23
CLOUDS FW SC FW SC B1 SC FW FW SC SC SC SC B1 SC SC SC SC SC SC B1 B1 FW
POP 12HR 40 30 40 30 30
QPF 12HR 0.05-0.20 0.02-0.11 0.22-0.42 0.01-0.17 0.16-0.49
SNOW 12HR MM MM MM
RAIN SHWRS IS IS IS SC IS IS IS SC IS SC SC IS IS IS IS IS IS SC SC IS
TSTMS IS IS IS
OBVIS H H H H
HEAT INDEX 83 89 90 82 81 87 88 81 83 89 90 82
MAX HEAT 98 107 105 86 93 103 102 85 96 105 102
HEAT Y Y
DATE FRI 09/11/26 SAT 09/12/26 SUN 09/13/26 MON 09/14/26
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 83 72 84 73 83 72 83
TEMP 73 78 83 75 73 79 84 76 73 79 83 75 73 78 83 75
DEWPT 73 74 72 72 72 72 70 71 72 72 71 72 71 72 72 72
PWIND DIR E E E E E E E E
WIND CHAR LT GN LT GN LT GN LT GN
AVG CLOUDS FW FW SC SC CL FW FW FW SC SC SC SC FW SC SC SC
POP 12HR 20 20 0 20 20 30 30 30
RAIN SHWRS IS IS IS IS IS IS IS IS IS IS IS IS SC IS
TSTMS IS IS
PRZ007-082000-
PONCE AND VICINITY-
INCLUDING THE CITIES OF GUAYANILLA, JUANA DIAZ, YAUCO, PENUELAS,
PONCE, AND SANTA ISABEL
231 AM AST TUE SEP 8 2026
DATE TUE 09/08/26 WED 09/09/26 THU 09/10/26
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 74 88 93 64 76 82 76 86 92 64 77 82 76 87 93
TEMP 77 83 87 88 83 80 78 77 76 82 85 86 82 79 78 77 77 83 86 87 82 79
DEWPT 72 74 75 74 75 73 72 72 71 73 75 74 75 74 73 73 72 74 75 74 75 74
RH 85 74 68 63 77 79 82 85 85 74 72 68 79 85 85 87 85 74 70 65 79 85
WIND DIR E E SE SE SE E E E E E E E E E NE E E E E SE E E
WIND SPD 5 6 14 13 11 9 6 6 5 9 14 13 12 6 5 5 6 9 14 14 12 9
WIND GUST 29 27 26 21 23 32 29 29 20 23 31 29 25 21
CLOUDS FW FW FW SC SC CL FW FW SC SC SC SC SC FW FW FW FW FW FW B1 B1 FW
POP 12HR 20 10 30 5 30
QPF 12HR 0.04-0.59 0.01-0.10 0.12-0.50 0.00-0.19 0.12-0.58
SNOW 12HR MM MM MM
RAIN SHWRS IS IS IS IS IS IS IS IS SC SC IS IS IS IS IS IS SC SC IS
TSTMS IS IS
OBVIS H H H H
HEAT INDEX 90 97 97 90 84 80 87 94 94 89 83 80 89 95 95 89 83
MAX HEAT 97 109 108 91 95 105 104 92 97 106 104
HEAT Y Y
DATE FRI 09/11/26 SAT 09/12/26 SUN 09/13/26 MON 09/14/26
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 76 87 75 88 76 86 75 87
TEMP 76 82 87 79 76 83 88 79 76 82 86 79 76 82 87 79
DEWPT 73 74 74 73 72 72 72 72 71 71 73 73 71 72 73 73
PWIND DIR E E E E NE E E E
WIND CHAR LT GN LT GN LT GN LT GN
AVG CLOUDS FW FW FW SC CL FW FW FW SC FW SC SC SC SC SC SC
POP 12HR 5 20 0 5 5 30 20 40
RAIN SHWRS IS IS IS IS IS IS IS IS IS IS IS IS IS IS
TSTMS IS IS IS
PRZ008-082000-
NORTHWEST-
INCLUDING THE CITIES OF AGUADILLA, CAMUY, HATILLO, ISABELA,
AND QUEBRADILLAS
231 AM AST TUE SEP 8 2026
DATE TUE 09/08/26 WED 09/09/26 THU 09/10/26
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 84 87 92 72 75 82 83 86 90 72 76 82 84 86 91
TEMP 75 82 86 87 82 79 77 76 75 81 85 86 82 79 77 76 76 82 85 86 81 78
DEWPT 73 75 77 78 77 76 75 74 73 75 77 78 77 76 76 75 74 76 77 78 77 76
RH 94 79 75 75 85 91 94 94 94 82 77 77 85 91 97 97 94 82 77 77 88 94
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 14 14 11 10 9 9 10 13 17 19 17 13 12 10 11 13 16 10 10
WIND GUST 21 27 27 21 29 32 31 26 25 23 24 28 24
CLOUDS CL CL FW B1 B1 SC FW FW FW FW CL B1 B2 FW FW FW FW FW FW B2 B2 FW
POP 12HR 50 10 60 5 60
QPF 12HR 0.11-0.73 0.02 0.54-0.80 0.02 0.41-0.68
SNOW 12HR MM MM MM
RAIN SHWRS IS SC SC IS IS NM NM IS IS IS IS IS IS NM NM IS
TSTMS IS IS IS IS IS IS
OBVIS H H H H
HEAT INDEX 90 98100 90 81 88 96 98 89 81 89 96 98 89
MAX HEAT 96 111 108 93 95 109 105 93 96 108 106
HEAT Y Y
DATE FRI 09/11/26 SAT 09/12/26 SUN 09/13/26 MON 09/14/26
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 75 88 74 89 75 86 75 87
TEMP 76 82 88 78 75 83 89 79 76 81 86 78 75 82 87 78
DEWPT 74 76 77 76 73 74 75 75 73 74 75 75 73 74 76 75
PWIND DIR E E E E E E E E
WIND CHAR GN GN GN BZ GN BZ GN GN
AVG CLOUDS FW FW SC SC CL CL FW SC CL CL FW SC SC SC SC SC
POP 12HR 20 30 0 40 0 30 20 40
RAIN SHWRS IS IS IS SC SC SC SC SC IS IS SC SC
TSTMS IS IS IS IS IS IS
PRZ009-082000-
WESTERN INTERIOR-
INCLUDING THE CITIES OF ADJUNTAS, LARES, LAS MARIAS, MARICAO,
SABANA GRANDE, SAN SEBASTIAN, AND UTUADO
231 AM AST TUE SEP 8 2026
DATE TUE 09/08/26 WED 09/09/26 THU 09/10/26
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 74 85 92 66 73 77 77 84 90 67 73 78 76 84 91
TEMP 73 80 84 85 80 76 75 73 73 79 83 84 79 77 75 74 73 80 83 84 79 76
DEWPT 71 73 74 75 74 73 72 71 70 72 74 75 74 73 73 72 72 73 74 75 74 73
RH 93 79 72 72 82 90 90 93 90 79 74 74 85 87 94 93 97 79 74 74 85 90
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 3 4 6 6 5 5 5 4 4 5 10 9 9 6 5 5 5 6 10 9 8 5
WIND GUST 28 25 21 20 29 28 28 20 16 31 28 25 19
CLOUDS CL CL FW B1 B1 FW CL FW FW FW FW B1 B2 FW FW FW FW FW FW B2 B2 CL
POP 12HR 50 10 60 0 60
QPF 12HR 0.10-0.84 0.01 0.19-0.80 0.01 0.25-0.68
SNOW 12HR MM MM MM
RAIN SHWRS IS SC SC IS IS NM NM NM NM
TSTMS IS IS IS IS IS IS
OBVIS H H H H
HEAT INDEX 84 91 93 84 82 90 91 83 83 90 92 83
MAX HEAT 96 110 108 86 91 107 105 86 94 108 106
HEAT Y Y
DATE FRI 09/11/26 SAT 09/12/26 SUN 09/13/26 MON 09/14/26
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 84 72 86 72 84 72 84
TEMP 73 79 84 76 73 80 86 76 73 79 84 75 73 79 84 75
DEWPT 72 73 73 72 71 71 71 72 71 71 72 72 71 71 73 72
PWIND DIR E E E E E E E E
WIND CHAR LT LT LT LT LT GN LT LT
AVG CLOUDS CL FW SC SC CL CL FW SC FW FW SC B1 SC SC SC B1
POP 12HR 20 40 0 30 0 60 20 60
RAIN SHWRS IS IS SC SC SC NM IS IS IS IS IS
TSTMS IS IS IS IS IS IS IS
PRZ010-082000-
MAYAGUEZ AND VICINITY-
INCLUDING THE CITIES OF AGUADA, ANASCO, HORMIGUEROS, MAYAGUEZ,
MOCA, RINCON, AND SAN GERMAN
231 AM AST TUE SEP 8 2026
DATE TUE 09/08/26 WED 09/09/26 THU 09/10/26
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 77 90 93 68 75 82 78 88 90 69 76 82 78 89 91
TEMP 76 84 89 90 84 80 78 76 75 83 87 88 83 80 78 77 76 83 88 89 83 79
DEWPT 73 76 77 78 78 77 75 73 72 75 77 78 78 77 76 74 73 76 77 78 78 77
RH 90 77 68 68 82 91 91 90 90 77 72 72 85 91 94 90 90 80 70 70 85 94
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 6 5 8 6 8 9 8 6 8 9 9 9 10 11 9 8 8 8 10 6 6
WIND GUST 21 19 21 20 19 24 24 24 18 23 24 26 25 27 26 21 19 23 27 24 26
CLOUDS CL CL FW B1 B1 SC CL FW FW CL CL B1 B2 FW FW CL CL CL CL B2 B2 FW
POP 12HR 50 10 60 5 60
QPF 12HR 0.04-0.84 0.02 0.08-0.81 0.01 0.07-0.70
SNOW 12HR MM MM MM
RAIN SHWRS IS NM NM IS NM NM IS IS NM NM IS
TSTMS IS IS IS IS IS IS
OBVIS H H H H
HEAT INDEX 93102105 94 85 89 99101 93 84 92100102 93 83
MAX HEAT 102 112 111 93 98 115 110 93 100 108 106
HEAT Y Y
DATE FRI 09/11/26 SAT 09/12/26 SUN 09/13/26 MON 09/14/26
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 75 90 75 91 75 89 75 89
TEMP 76 84 90 79 76 84 91 80 76 83 89 79 76 83 89 79
DEWPT 74 76 77 76 73 74 76 75 73 74 76 75 73 74 76 75
PWIND DIR E E E E E E E E
WIND CHAR GN GN GN GN GN GN GN LT
AVG CLOUDS FW FW SC SC CL CL FW SC CL CL SC B1 SC SC SC B1
POP 12HR 20 40 0 40 0 60 20 60
RAIN SHWRS IS IS SC SC SC SC NM IS IS IS NM NM
TSTMS IS IS IS IS IS IS IS IS
PRZ011-082000-
SOUTHWEST-
INCLUDING THE CITIES OF CABO ROJO, GUANICA, AND LAJAS
231 AM AST TUE SEP 8 2026
DATE TUE 09/08/26 WED 09/09/26 THU 09/10/26
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 85 91 92 73 76 82 88 74 77 82 85 90 91
TEMP 77 85 90 91 85 81 79 77 76 83 87 88 83 80 79 78 77 85 89 90 84 80
DEWPT 74 75 78 78 78 77 75 73 72 74 77 78 78 77 76 74 73 75 77 78 78 77
RH 90 72 68 66 80 88 88 87 87 74 72 72 85 91 91 88 87 72 68 68 82 91
WIND DIR E E SE SE E E E E E E E SE E E E E E E E SE E E
WIND SPD 9 10 17 16 13 13 11 9 6 10 19 17 17 14 8 6 8 11 18 18 16 12
WIND GUST 20 21 33 32 26 27 27 23 23 36 34 34 31 19 25 36 37 32 27
CLOUDS CL CL CL SC SC CL FW FW FW FW FW SC SC FW FW CL CL CL CL B1 B1 FW
POP 12HR 20 5 20 0 30
QPF 12HR 0.06-0.70 0.02 0.10-0.51 0.01 0.11-0.56
SNOW 12HR MM MM MM
RAIN SHWRS IS IS IS IS IS SC SC
TSTMS IS IS
OBVIS H H H H
HEAT INDEX 94104106 96 87 80 90100102 94 87 80 93102104 95 86
MAX HEAT 97 111 109 92 93 106 106 93 95 108 106
HEAT Y Y
DATE FRI 09/11/26 SAT 09/12/26 SUN 09/13/26 MON 09/14/26
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 76 91 76 92 76 90 75 91
TEMP 77 85 91 80 77 85 92 80 77 84 90 79 76 84 91 80
DEWPT 75 75 77 76 73 73 76 76 72 73 76 76 73 73 77 76
PWIND DIR E E E E E E E E
WIND CHAR GN BZ GN GN LT GN LT GN
AVG CLOUDS FW FW FW SC CL CL FW FW FW FW FW SC SC SC SC B1
POP 12HR 0 30 0 5 5 30 20 40
RAIN SHWRS SC SC IS IS IS SC IS IS IS IS IS
TSTMS IS IS IS
PRZ012-082000-
CULEBRA-
INCLUDING THE CITY OF CULEBRA
231 AM AST TUE SEP 8 2026
DATE TUE 09/08/26 WED 09/09/26 THU 09/10/26
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 85 89 92 82 87 82 85 89 92
TEMP 82 86 88 89 86 84 82 82 82 84 86 87 84 83 82 82 82 86 88 89 85 83
DEWPT 77 77 77 77 77 77 77 77 77 78 78 78 78 78 78 78 77 78 78 78 78 78
RH 85 75 70 68 75 80 85 85 85 82 77 75 82 85 88 88 85 77 72 70 80 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 18 18 18 17 18 19 20 20 21 23 21 18 19 20 23 24 25 24 21 20 18 19
CLOUDS SC B1 B1 SC SC SC SC B1 B2 B2 B2 SC B1 B1 B1 B1 B1 B1 B1 B1 B1 SC
POP 12HR 40 60 60 50 50
QPF 12HR 0.22 0.22 0.37 0.21 0.23-0.31
SNOW 12HR MM MM MM
RAIN SHWRS IS SC SC SC SC IS SC SC NM SC NM SC SC SC SC SC SC SC SC SC SC SC
TSTMS IS IS IS IS IS IS
OBVIS H
HEAT INDEX 91 97100102 97 93 92 90 90 96 98 99 96 93 92 90 90 99102103 98 93
MAX HEAT 102 106 105 97 98 103 103 96 104 108 107
HEAT Y Y
DATE FRI 09/11/26 SAT 09/12/26 SUN 09/13/26 MON 09/14/26
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 80 90 81 90 82 90 81 90
TEMP 81 86 90 84 82 86 90 84 82 86 90 84 82 86 90 84
DEWPT 78 77 77 77 76 76 77 76 76 76 76 76 76 76 76 76
PWIND DIR E E E E E E E E
WIND CHAR BZ BZ BZ BZ BZ BZ BZ BZ
AVG CLOUDS SC SC SC SC SC SC SC SC SC SC B1 SC CL FW B1 B1
POP 12HR 30 30 10 30 30 40 30 40
RAIN SHWRS SC SC SC IS IS IS IS SC SC SC SC SC SC SC SC
TSTMS IS IS IS IS
PRZ013-082000-
VIEQUES-
INCLUDING THE CITY OF VIEQUES
231 AM AST TUE SEP 8 2026
DATE TUE 09/08/26 WED 09/09/26 THU 09/10/26
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 85 89 91 81 87 81 85 90 91
TEMP 81 86 88 89 85 83 82 81 81 84 86 87 84 83 82 81 81 86 89 90 85 82
DEWPT 76 76 75 75 75 75 75 76 76 77 76 75 76 76 76 76 76 77 76 75 76 76
RH 85 72 66 64 72 77 79 85 85 80 72 68 77 80 82 85 85 75 66 62 75 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 17 18 17 16 19 18 19 20 20 23 21 18 18 20 23 24 24 23 20 19 18 18
CLOUDS SC B1 B2 SC B1 SC B1 B1 B2 B1 B2 SC B2 B1 B1 B2 B2 B2 B2 B2 B2 B1
POP 12HR 50 60 50 60 60
QPF 12HR 0.22 0.20 0.35-0.41 0.21-0.28 0.24-0.46
SNOW 12HR MM MM MM
RAIN SHWRS IS SC SC SC SC SC SC SC NM SC SC SC SC SC SC SC SC NM NM NM NM SC
TSTMS IS IS IS IS IS IS
OBVIS H
HEAT INDEX 88 96 98 99 94 90 89 87 87 94 97 96 93 90 89 88 87 97100101 95 90
MAX HEAT 98 102 101 92 96 99 98 93 99 104 102
HEAT Y Y
DATE FRI 09/11/26 SAT 09/12/26 SUN 09/13/26 MON 09/14/26
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 79 90 81 91 81 90 81 90
TEMP 80 86 90 83 81 86 91 84 82 86 90 83 81 86 90 83
DEWPT 76 76 75 75 75 75 74 74 74 75 74 74 74 75 73 74
PWIND DIR E E E E E E E E
WIND CHAR BZ BZ BZ BZ BZ BZ BZ BZ
AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC CL FW B1 B1
POP 12HR 30 30 10 30 30 30 30 40
RAIN SHWRS SC SC SC IS IS IS IS SC SC SC SC SC SC SC SC
TSTMS IS IS
VIZ001-082000-
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 TUE SEP 8 2026
DATE TUE 09/08/26 WED 09/09/26 THU 09/10/26
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 85 88 92 75 81 82 86 76 81 83 85 88 91
TEMP 81 85 87 88 85 83 82 81 81 84 86 86 84 82 82 81 81 85 88 88 85 82
DEWPT 76 76 75 75 75 76 76 76 77 77 76 75 76 76 77 77 77 77 76 75 76 76
RH 85 75 68 66 72 80 82 85 88 80 72 70 77 82 85 88 88 77 68 66 75 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 18 20 18 18 19 19 20 21 23 23 23 19 20 21 24 24 24 24 23 20 19 19
CLOUDS SC B1 B1 SC SC SC SC B1 B2 B1 B1 FW SC SC SC B1 B1 B1 B1 SC SC SC
POP 12HR 30 60 40 40 40
QPF 12HR 0.10-0.19 0.21 0.16-0.28 0.15 0.14-0.20
SNOW 12HR MM MM MM
RAIN SHWRS IS SC SC IS IS IS SC SC NM SC SC IS IS IS IS SC SC SC SC IS IS IS
TSTMS IS
OBVIS H H H H
HEAT INDEX 88 95 97 97 93 90 89 87 87 94 96 96 93 90 89 88 88 96 99 99 94 89
MAX HEAT 100 105 104 94 98 101 100 94 100 104 103
HEAT Y Y
DATE FRI 09/11/26 SAT 09/12/26 SUN 09/13/26 MON 09/14/26
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 79 89 80 89 81 89 80 89
TEMP 80 85 89 82 80 85 89 83 81 86 89 83 81 85 89 83
DEWPT 77 76 75 75 75 75 74 75 75 75 74 75 75 75 73 74
PWIND DIR E E E E E E E E
WIND CHAR BZ BZ BZ BZ BZ BZ BZ BZ
AVG CLOUDS SC SC SC FW FW FW SC SC SC SC SC SC FW SC SC SC
POP 12HR 20 20 10 20 20 20 30 30
RAIN SHWRS IS IS IS IS IS IS IS IS IS IS IS IS IS SC SC SC
VIZ002-082000-
ST CROIX-
INCLUDING THE CITIES OF CHRISTIANSTED, FREDERIKSTED,
FREDERIKSTED SOUTHEAST, AND GROVE PLACE
231 AM AST TUE SEP 8 2026
DATE TUE 09/08/26 WED 09/09/26 THU 09/10/26
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 85 89 92 77 81 83 87 77 80 83 85 90 92
TEMP 81 85 88 89 85 83 82 81 81 84 86 87 84 82 81 80 80 86 89 90 86 83
DEWPT 77 77 76 76 76 76 77 77 77 77 77 77 77 77 78 77 77 78 77 77 77 77
RH 88 77 68 66 75 80 85 88 88 80 75 72 80 85 91 91 91 77 68 66 75 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 14 17 18 17 17 18 18 19 19 20 20 19 19 19 21 21 21 21 21 19 18 17
WIND GUST 29 31 32
CLOUDS SC SC SC FW FW SC SC B1 B2 SC B1 FW SC B1 B1 B1 B1 SC SC SC SC SC
POP 12HR 30 60 40 40 30
QPF 12HR 0.07-0.13 0.22 0.17-0.27 0.20 0.18
SNOW 12HR MM MM MM
RAIN SHWRS IS SC SC IS IS IS SC SC NM SC SC IS IS SC SC SC SC SC SC SC SC IS
TSTMS IS
OBVIS H H
HEAT INDEX 88 96 99 99 95 91 90 88 88 94 98 98 94 91 89 88 88 97102102 97 93
MAX HEAT 100 107 106 95 98 103 103 94 102 108 107
HEAT Y Y
DATE FRI 09/11/26 SAT 09/12/26 SUN 09/13/26 MON 09/14/26
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 81 90 79 91 81 90 80 90
TEMP 81 86 90 82 80 86 91 84 81 86 90 83 81 86 90 83
DEWPT 77 77 76 76 76 76 75 76 75 76 75 76 75 76 75 75
PWIND DIR E E E E E E E E
WIND CHAR BZ BZ BZ BZ BZ BZ BZ BZ
AVG CLOUDS SC SC FW FW FW FW FW FW SC SC SC SC SC SC B1 SC
POP 12HR 20 10 10 10 30 30 40 40
RAIN SHWRS IS IS IS IS IS IS IS IS SC SC IS IS SC SC IS
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