Area Forecast Matrices
Issued by NWS San Juan, PR

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2
612
FOCA52 TJSJ 010902
AFMSJU

Area Forecast Matrices
National Weather Service San Juan PR
502 AM AST Mon Sep 1 2025

PRZ001-012000-
San Juan and Vicinity-
Including the cities of Bayamon, Carolina, Catano, Guaynabo,
San Juan, Toa Alta, Toa Baja, and Trujillo Alto
502 AM AST Mon Sep 1 2025

Date             Mon 09/01/25            Tue 09/02/25            Wed 09/03/25
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 89 92    74 78 82    82 89 92    73 77 82    82 89 92
Temp             84 88 89 84 81 79 78 77 84 88 89 84 81 79 78 77 84 88 89 83 80
Dewpt            76 77 76 76 76 76 76 75 76 77 77 77 76 76 76 76 77 77 77 77 75
RH               77 70 66 77 85 91 94 94 77 70 68 80 85 91 94 97 80 70 68 82 85
Wind dir         SE SE  E SE SE SE SE SE SE SE SE SE SE SE SE SE SE  E  E  E  E
Wind spd          5  9 11 10  6  5  4  5  6 10 12 11  6  5  5  4  6 11 14 11  6
Wind gust              21
Clouds           SC B1 B2 SC SC B1 SC B1 FW SC B1 B1 FW FW CL CL SC SC B1 B1 FW
PoP 12hr                     60          40          40          20          50
QPF 12hr              0.33-0.49   0.08-0.26   0.07-0.73   0.01-0.06   0.12-0.66
Snow 12hr                    MM          MM          MM
Rain shwrs       IS SC NM IS IS SC SC SC IS IS SC SC IS IS       IS IS SC SC IS
Tstms                  IS                      IS IS                   IS IS
Heat index       93 99100 92 85 81       93100101 93 86 83 80    93100101 92 85
Max heat         98   108   107    92    99   109   108    92    99   110   108
Heat                 Y  Y


Date          Thu 09/04/25  Fri 09/05/25  Sat 09/06/25  Sun 09/07/25
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    88      76    88      76    87
Temp          77 84 89 80   77 83 88 80   77 83 88 80   77 83 87 79
Dewpt         75 76 75 74   75 76 77 76   76 77 77 76   76 77 76 75
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 SC SC B1   SC SC B1 B1   SC SC SC SC
PoP 12hr         20    20      20    50      30    70      30    50
Rain shwrs    IS IS IS IS   IS IS IS SC   SC SC SC NM   SC SC SC SC
Tstms                             IS IS         IS IS         IS IS

$$
PRZ002-012000-
Northeast-
Including the cities of Ceiba, Canovanas, Fajardo, Humacao,
Loiza, Luquillo, Naguabo, and Rio Grande
502 AM AST Mon Sep 1 2025

Date             Mon 09/01/25            Tue 09/02/25            Wed 09/03/25
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 88 93    67 77 82    74 87 92    65 75 82    74 87 93
Temp             83 87 88 83 80 78 77 76 83 86 87 82 79 77 76 76 82 86 87 82 79
Dewpt            75 75 74 75 74 75 75 75 75 76 76 76 75 76 75 75 75 76 75 76 74
RH               77 68 63 77 82 91 94 97 77 72 70 82 88 97 97 97 79 72 68 82 85
Wind dir         SE SE SE SE  E  E  E  E  E SE SE  E SE  E  E  E  E  E  E  E  E
Wind spd          5 10 10  9  6  8  8  8  9 10  9  9  6  8  6  8  9 11 11 10  8
Wind gust              20                      20                      21
Clouds           B1 B1 B1 B1 SC B1 B1 B2 B1 SC B1 B1 B1 B1 SC SC B1 B1 B1 B1 SC
PoP 12hr                     40          50          50          50          50
QPF 12hr              0.16-0.43   0.17-0.27   0.07-0.76   0.04-0.16   0.15-0.66
Snow 12hr                    MM          MM          MM
Rain shwrs       SC SC SC SC SC SC SC SC SC IS SC SC SC SC SC SC SC SC SC SC SC
Tstms                  IS                      IS IS
Heat index       90 97 97 91 84 81       90 97 98 90 83          90 96 97 90 82
Max heat         99   108   107    92    99   109   108    93    98   109   108
Heat                 Y  Y


Date          Thu 09/04/25  Fri 09/05/25  Sat 09/06/25  Sun 09/07/25
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    87      75    87      76    87      76    86
Temp          76 82 87 79   76 82 87 79   76 82 87 79   76 82 86 79
Dewpt         74 75 73 73   74 75 75 75   75 76 76 75   75 75 75 74
PWind dir         E     E       E     E       E     E       E     E
Wind char        LT    GN      LT    GN      GN    GN      GN    GN
Avg clouds    SC B1 SC SC   SC SC SC B1   SC SC B1 B1   SC SC B1 B1
PoP 12hr         40    30      20    60      50    70      50    60
Rain shwrs    SC SC SC IS   IS IS IS SC   SC SC NM NM   SC SC SC SC
Tstms                             IS IS         IS IS         IS IS

$$
PRZ003-012000-
Southeast-
Including the cities of Arroyo, Guayama, Maunabo, Patillas,
Salinas, and Yabucoa
502 AM AST Mon Sep 1 2025

Date             Mon 09/01/25            Tue 09/02/25            Wed 09/03/25
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 88 93    71 77 82    77 87 92    68 76 82    77 87 93
Temp             83 87 88 83 80 78 77 76 83 86 87 82 79 77 76 76 82 86 87 82 79
Dewpt            74 74 73 75 74 75 74 74 75 75 74 75 74 75 74 74 75 74 74 75 74
RH               74 65 61 77 82 91 90 94 77 70 65 79 85 94 94 94 79 68 65 79 85
Wind dir          E SE SE SE  E  E  E  E  E  E SE SE  E  E  E  E  E  E SE  E  E
Wind spd          5  9  9  8  6  5  6  6  8 10  9  9  6  6  5  6  8 11 12 10  8
Wind gust                                      21                   24 25
Clouds           B1 B2 B1 B1 SC SC B1 B1 SC CL FW FW SC SC SC SC B1 B1 SC SC FW
PoP 12hr                     60          40          10          40          40
QPF 12hr              0.18-0.31   0.05-0.19   0.00-0.09   0.03-0.14   0.04-0.17
Snow 12hr                    MM          MM          MM
Rain shwrs       SC NM SC SC SC IS SC SC IS    IS IS IS IS IS IS SC SC IS IS IS
Heat index       89 95 96 90 83 80       89 95 96 89 82          89 95 95 88 81
Max heat         98   105   104    92    98   106   105    92    97   106   105
Heat                 Y  Y


Date          Thu 09/04/25  Fri 09/05/25  Sat 09/06/25  Sun 09/07/25
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    87      75    87      76    87      75    86
Temp          75 82 87 79   76 82 86 79   76 82 87 79   76 81 86 79
Dewpt         73 74 72 72   73 74 73 74   74 75 74 74   74 74 73 73
PWind dir         E     E       E     E       E     E      NE     E
Wind char        LT    GN      LT    GN      GN    GN      LT    GN
Avg clouds    FW SC SC FW   SC SC SC SC   SC SC SC SC   SC SC SC SC
PoP 12hr         30    30      20    30      30    40      40    40
Rain shwrs    IS IS IS IS   IS IS IS IS   SC SC SC SC   SC SC SC IS

$$
PRZ004-012000-
Eastern Interior-
Including the cities of Aguas Buenas, Caguas, Cayey, Cidra,
Comerio, Gurabo, Juncos, Las Piedras, and San Lorenzo
502 AM AST Mon Sep 1 2025

Date             Mon 09/01/25            Tue 09/02/25            Wed 09/03/25
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 94    70 74 78    76 86 92    68 73 78    76 86 93
Temp             81 85 86 81 77 75 74 73 81 85 86 80 77 75 74 73 81 85 86 80 76
Dewpt            74 74 73 74 73 74 73 73 75 74 74 75 73 74 73 73 74 75 74 74 72
RH               79 70 65 79 87 97 97100 82 70 68 85 87 97 97100 79 72 68 82 87
Wind dir          E SE SE SE SE  E  E  E  E SE SE SE  E  E  E  E  E  E  E  E  E
Wind spd          4  9  9  8  4  3  4  4  5  9  9  8  4  4  4  4  6 10 11  9  5
Clouds           B1 B1 B1 B1 SC SC B1 B1 FW FW SC SC FW FW FW FW B1 B1 B1 B1 FW
PoP 12hr                     50          40          30          40          40
QPF 12hr              0.21-0.45   0.05-0.22   0.01-0.75   0.02-0.10   0.08-0.65
Snow 12hr                    MM          MM          MM
Rain shwrs       SC SC SC SC IS IS SC SC IS IS SC SC IS IS IS IS SC SC SC SC IS
Tstms                  IS                      IS IS
Heat index       86 93 93 85             86 93 94 85             85 93 94 84
Max heat         97   106   105    86    97   107   106    88    98   107   106
Heat                 Y  Y


Date          Thu 09/04/25  Fri 09/05/25  Sat 09/06/25  Sun 09/07/25
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    86      73    85      73    85      73    84
Temp          73 80 86 77   73 80 85 76   73 80 85 76   73 79 84 76
Dewpt         72 74 72 71   72 74 74 73   73 75 74 73   73 74 73 73
PWind dir         E     E       E     E       E     E       E     E
Wind char        LT    GN      LT    LT      LT    GN      LT    LT
Avg clouds    FW SC SC FW   FW SC SC SC   SC SC SC B1   SC SC SC SC
PoP 12hr         20    20      20    30      30    40      30    40
Rain shwrs    IS IS IS IS   IS IS IS SC   SC SC SC SC   SC SC SC SC
Tstms                                IS            IS         IS IS

$$
PRZ005-012000-
North Central-
Including the cities of Arecibo, Barceloneta, Dorado, Florida,
Manati, Vega Alta, and Vega Baja
502 AM AST Mon Sep 1 2025

Date             Mon 09/01/25            Tue 09/02/25            Wed 09/03/25
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 89 93    73 76 82    85 89 92    73 76 82    84 89 93
Temp             83 88 89 83 79 77 76 75 83 88 89 83 80 78 76 76 83 88 89 83 79
Dewpt            76 77 78 77 76 76 75 74 77 78 78 77 76 76 75 75 77 78 78 77 76
RH               80 70 70 82 91 97 97 97 82 72 70 82 88 94 97 97 82 72 70 82 91
Wind dir         SE  E  E  E SE SE SE SE SE  E  E  E SE SE SE SE  E  E  E  E  E
Wind spd          5  6 11  8  5  5  4  4  5  9 12  6  5  5  4  3  5 10 14 11  8
Wind gust              23                      24 18                   26 21
Clouds           SC SC B2 B2 B2 SC SC SC FW FW B1 B1 FW FW CL CL FW FW B1 B1 CL
PoP 12hr                     60          60          50           5          30
QPF 12hr              0.26-1.72   0.07-0.18   0.04-1.75        0.01   0.05-1.20
Snow 12hr                    MM          MM          MM
Rain shwrs       IS IS SC  D NM IS IS IS    IS SC SC             IS IS SC SC
Tstms                  IS IS IS                IS IS
Heat index       92101103 92 83          93102103 93 84          93102103 92 82
Max heat         99   114   112    92   100   113   111    92   100   115   112
Heat                 Y  Y


Date          Thu 09/04/25  Fri 09/05/25  Sat 09/06/25  Sun 09/07/25
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    89      75    88      75    88      75    87
Temp          76 83 89 79   76 82 88 79   76 83 88 79   76 82 87 78
Dewpt         75 77 76 74   74 77 78 76   75 78 78 76   75 77 77 76
PWind dir         E     E       E     E       E     E       E     E
Wind char        LT    GN      LT    GN      LT    GN      LT    GN
Avg clouds    FW FW FW SC   FW FW SC SC   FW FW SC SC   FW FW SC SC
PoP 12hr          0    30      10    20      10    40      10    50
Rain shwrs          SC SC   IS IS IS IS   IS IS IS SC   IS IS IS SC
Tstms                  IS                          IS         IS IS

$$
PRZ006-012000-
Central Interior-
Including the cities of Aibonito, Barranquitas, Ciales, Coamo,
Corozal, Jayuya, Morovis, Naranjito, Orocovis, and Villalba
502 AM AST Mon Sep 1 2025

Date             Mon 09/01/25            Tue 09/02/25            Wed 09/03/25
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 83 91    64 73 76    74 83 91    64 72 76    74 83 91
Temp             78 82 83 78 75 73 72 72 78 82 83 78 75 74 73 72 78 82 83 78 75
Dewpt            72 73 73 73 72 72 71 71 73 73 73 74 72 72 71 71 73 74 73 73 72
RH               82 74 72 85 90 97 97 97 85 74 72 88 90 93 93 97 85 77 72 85 90
Wind dir         SE SE SE SE SE SE  E  E  E SE SE SE SE  E  E  E  E  E SE  E  E
Wind spd          3  5  5  4  4  3  3  3  4  6  8  6  4  3  3  3  4  9 10  8  4
Wind gust                                      20                   24 23
Clouds           SC B1 B2 B2 SC SC SC SC FW CL SC SC FW FW CL CL SC SC SC SC CL
PoP 12hr                     60          30          30          10          30
QPF 12hr              0.29-1.45   0.03-0.13   0.00-1.50        0.01   0.04-0.13
Snow 12hr                    MM          MM          MM
Rain shwrs       IS SC SC SC SC IS IS IS       SC SC             IS IS SC SC
Tstms                  IS IS IS                IS IS
Heat index       81 87 88 81             81 87 89 81             81 87 88 80
Max heat         93   104   103          94   104   103    84    95   105   103


Date          Thu 09/04/25  Fri 09/05/25  Sat 09/06/25  Sun 09/07/25
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    83      71    82      71    82      71    81
Temp          72 78 83 75   72 77 82 74   72 78 82 75   72 77 81 74
Dewpt         71 72 71 70   70 72 73 71   71 73 73 72   71 73 72 71
PWind dir         E     E       E     E       E     E       E     E
Wind char        LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    CL FW FW SC   FW FW FW SC   FW FW SC SC   FW FW SC SC
PoP 12hr          5    30      10    20      10    30      10    50
Rain shwrs       IS IS IS   IS IS IS IS   IS IS IS IS   IS IS IS SC
Tstms                  IS                                     IS IS

$$
PRZ007-012000-
Ponce and Vicinity-
Including the cities of Guayanilla, Juana Diaz, Yauco, Penuelas,
Ponce, and Santa Isabel
502 AM AST Mon Sep 1 2025

Date             Mon 09/01/25            Tue 09/02/25            Wed 09/03/25
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 94    66 76 82    74 87 92    64 76 82    74 87 93
Temp             82 86 87 82 79 77 76 75 82 86 87 82 79 78 76 76 82 86 87 82 79
Dewpt            72 72 72 73 73 73 72 71 73 73 73 74 73 73 72 72 73 73 73 73 73
RH               72 63 61 74 82 87 87 87 74 65 63 77 82 85 87 87 74 65 63 74 82
Wind dir          E SE SE SE  E  E NE  E  E SE SE SE  E  E  E  E  E SE SE SE  E
Wind spd          4  8  8  6  5  5  4  4  5  9  9  8  5  5  4  3  5 11 11 10  6
Wind gust              20                   21 21                   25 26 23
Clouds           SC B1 B1 B1 SC SC SC SC FW CL SC SC FW FW FW FW FW FW SC SC CL
PoP 12hr                     50          20          10           5          20
QPF 12hr              0.13-0.78        0.03   0.00-1.50        0.01   0.02-0.75
Snow 12hr                    MM          MM          MM
Rain shwrs       IS SC SC SC IS IS IS IS       IS IS             IS IS IS IS
Tstms                  IS                      IS IS
Heat index       87 92 94 88 82          87 93 95 88 83 80       88 93 94 87 82
Max heat         95   105   103    91    95   105   103    91    96   104   103
Heat                 Y  Y


Date          Thu 09/04/25  Fri 09/05/25  Sat 09/06/25  Sun 09/07/25
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    87      75    86      75    87      75    86
Temp          76 82 87 79   76 81 86 78   76 82 87 79   76 81 86 78
Dewpt         71 72 73 72   69 71 73 73   72 72 73 73   71 72 73 73
PWind dir         E     E       E     E       E     E       E     E
Wind char        LT    GN      LT    LT      LT    GN      LT    GN
Avg clouds    FW FW FW SC   FW FW FW SC   FW FW SC SC   FW FW SC SC
PoP 12hr          5    30       5    20      10    40       5    30
Rain shwrs          IS IS      IS IS IS   IS IS IS SC   IS IS IS IS
Tstms                                                            IS

$$
PRZ008-012000-
Northwest-
Including the cities of Aguadilla, Camuy, Hatillo, Isabela,
and Quebradillas
502 AM AST Mon Sep 1 2025

Date             Mon 09/01/25            Tue 09/02/25            Wed 09/03/25
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 88 94    71 75 82    85 88 92    71 75 82    84 87 94
Temp             82 87 88 82 78 76 75 74 82 87 88 82 79 77 76 75 82 86 87 82 78
Dewpt            74 75 76 75 75 75 74 72 74 76 76 76 75 75 74 73 75 76 76 75 75
RH               77 68 68 79 91 97 97 93 77 70 68 82 88 94 94 94 79 72 70 79 91
Wind dir          E  E NE NE SE SE SE SE  E  E NE  E SE SE SE SE  E  E  E  E  E
Wind spd          5  3  8  6  4  5  4  5  5  5  8  5  3  5  4  4  5  8 11  5  5
Wind gust                                                              23
Clouds           SC B1 OV OV B2 SC SC SC FW CL B2 B2 SC SC CL CL FW FW B2 B2 FW
PoP 12hr                     80          60          70          10          70
QPF 12hr              0.84-1.89        0.17   0.83-2.01        0.02   0.10-2.01
Snow 12hr                    MM          MM          MM
Rain shwrs          SC NM  D NM IS             NM NM IS IS             NM NM
Tstms                  IS IS IS                IS IS                   IS IS
Heat index       88 96 98 89 80          88 97 99 90 81          89 97 98 88
Max heat         97   109   107    92    96   107   106    91    97   109   108
Heat                 Y  Y


Date          Thu 09/04/25  Fri 09/05/25  Sat 09/06/25  Sun 09/07/25
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    88      74    87      74    87      74    86
Temp          75 82 88 78   75 81 86 78   75 82 87 78   75 81 86 77
Dewpt         73 74 75 74   72 75 77 75   74 76 77 75   74 75 76 75
PWind dir         E     E       E     E       E     E       E     E
Wind char        LT    GN      LT    GN      GN    GN      LT    GN
Avg clouds    FW CL FW SC   CL FW SC B1   FW FW SC B1   FW FW SC B1
PoP 12hr          0    50       5    70       5    80      10    60
Rain shwrs          SC SC         NM NM   IS IS IS  D   IS IS IS NM
Tstms               IS IS         IS IS         SC SC         IS IS

$$
PRZ009-012000-
Western Interior-
Including the cities of Adjuntas, Lares, Las Marias, Maricao,
Sabana Grande, San Sebastian, and Utuado
502 AM AST Mon Sep 1 2025

Date             Mon 09/01/25            Tue 09/02/25            Wed 09/03/25
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 94    66 73 76    75 85 92    65 72 76    74 84 93
Temp             79 83 84 79 76 74 73 72 79 84 85 79 76 74 73 72 79 83 84 79 75
Dewpt            72 73 73 73 72 73 71 70 72 73 74 73 72 73 71 71 73 73 74 72 72
RH               79 72 70 82 87 97 93 93 79 70 70 82 87 97 93 97 82 72 72 79 90
Wind dir         SE SE SE  E  E SE SE SE  E SE SE SE SE SE  E  E  E  E  E  E SE
Wind spd          3  3  4  4  3  3  3  3  4  4  4  3  3  4  3  3  3  5  4  4  3
Wind gust                                   20 20                   24 25 21
Clouds           SC SC B2 OV B1 SC SC SC FW CL B2 B2 FW FW CL CL FW FW B2 B2 CL
PoP 12hr                     80          50          70           0          60
QPF 12hr              0.19-1.92   0.02-0.18   0.04-2.01           0   0.05-2.00
Snow 12hr                    MM          MM          MM
Rain shwrs          IS NM  D SC                NM NM                   NM NM
Tstms                  IS IS IS                IS IS                   IS IS
Heat index       82 89 90 82             82 90 91 83             82 89 91 81
Max heat         94   106   104    84    93   107   105    84    94   107   105


Date          Thu 09/04/25  Fri 09/05/25  Sat 09/06/25  Sun 09/07/25
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    85      72    83      72    84      72    83
Temp          72 79 85 76   73 78 83 75   72 79 84 75   72 78 83 75
Dewpt         71 72 72 71   70 72 74 72   71 73 74 72   71 73 73 72
PWind dir         E     E       E     E       E     E       E     E
Wind char        LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    CL CL SC B1   CL CL SC SC   CL FW SC B1   FW FW SC B1
PoP 12hr          0    60       0    60       0    80       5    70
Rain shwrs          NM NM         NM NM          D  D   IS IS NM NM
Tstms               IS IS         IS IS         SC SC         IS IS

$$
PRZ010-012000-
Mayaguez and Vicinity-
Including the cities of Aguada, Anasco, Hormigueros, Mayaguez,
Moca, Rincon, and San German
502 AM AST Mon Sep 1 2025

Date             Mon 09/01/25            Tue 09/02/25            Wed 09/03/25
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 94    71 76 82    78 90 92    69 75 82    77 89 94
Temp             84 88 90 84 80 78 76 76 84 88 90 84 80 78 76 76 84 88 89 83 79
Dewpt            74 76 76 76 76 75 74 73 75 76 77 76 75 75 74 74 75 77 77 76 76
RH               72 68 64 77 88 91 94 90 74 68 66 77 85 91 94 94 74 70 68 80 91
Wind dir          E SE NE  E  E  E  E  E  E SE NE  E  E  E  E  E  E  E  E  E  E
Wind spd          5  4  5  6  6  5  5  5  6  4  4  5  4  6  5  5  5  5  6  4  4
Wind gust        18 17 16    18 17       21 18 14    19 18 17 18 19 19 20 20 19
Clouds           SC SC B1 B2 B1 SC SC SC FW CL B2 B2 SC SC FW FW FW FW B2 B2 FW
PoP 12hr                     80          50          70          10          60
QPF 12hr              0.01-1.90   0.00-0.18   0.04-2.01   0.00-0.14   0.08-2.02
Snow 12hr                    MM          MM          MM
Rain shwrs          IS SC  D NM                NM NM IS IS              D  D IS
Tstms                  IS IS IS                IS IS                   IS IS
Heat index       91 99101 92 83          91100102 92 83          91100102 91 81
Max heat         97   111   110    92    98   109   108    92    98   112   109
Heat                 Y  Y


Date          Thu 09/04/25  Fri 09/05/25  Sat 09/06/25  Sun 09/07/25
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      75    89      75    89      75    89
Temp          75 84 90 80   76 83 88 79   76 83 89 79   76 83 89 79
Dewpt         74 75 76 75   73 74 77 76   74 76 77 76   74 75 76 75
PWind dir         E     E       E     E       E     E       E     E
Wind char        LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    FW FW FW SC   FW FW SC SC   CL FW SC B1   FW FW SC B1
PoP 12hr          5    60       0    70       5    70       5    70
Rain shwrs    IS    NM NM         NM NM          D  D   IS IS NM NM
Tstms               IS IS         IS IS         SC SC         IS IS

$$
PRZ011-012000-
Southwest-
Including the cities of Cabo Rojo, Guanica, and Lajas
502 AM AST Mon Sep 1 2025

Date             Mon 09/01/25            Tue 09/02/25            Wed 09/03/25
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 92 94    74 77 82    85 91 92    72 76 82    85 91 94
Temp             85 90 92 85 80 78 77 76 85 89 91 84 80 78 77 76 85 90 91 84 80
Dewpt            74 73 75 75 75 75 75 74 75 75 75 75 76 75 75 74 75 75 75 75 75
RH               70 58 58 72 85 91 94 94 72 64 60 74 88 91 94 94 72 62 60 74 85
Wind dir          E SE SE SE  E  E  E  E  E SE SE SE  E  E  E  E  E SE SE SE  E
Wind spd          9 11 12  9  8  9  8  6  9 12 12 10  9  9  9  8  9 13 16 13  8
Wind gust           23 24 20             20 25 26 20 23 20 19    20 26 33 29 19
Clouds           SC SC SC SC SC SC SC SC FW CL SC SC FW FW CL CL FW FW SC SC FW
PoP 12hr                     30          10          10           0          20
QPF 12hr              0.10-1.03   0.01-0.08   0.00-1.50           0   0.02-0.11
Snow 12hr                    MM          MM          MM
Rain shwrs       IS IS IS IS IS IS             IS IS                   IS IS
Heat index       92 99102 93 85          92100102 93 85          93100102 92 83
Max heat         95   108   106    91    95   109   107    92    96   109   107
Heat                 Y  Y


Date          Thu 09/04/25  Fri 09/05/25  Sat 09/06/25  Sun 09/07/25
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    92      75    90      76    91      76    90
Temp          76 85 92 80   76 84 90 80   77 85 91 80   77 84 90 80
Dewpt         74 74 75 75   71 71 75 75   73 74 75 76   73 73 75 75
PWind dir         E     E       E     E       E     E       E     E
Wind char        GN    GN      LT    LT      LT    GN      LT    GN
Avg clouds    FW FW FW FW   CL CL FW FW   FW FW FW FW   CL FW FW FW
PoP 12hr          0    20       0    10       5    20       5    20
Rain shwrs          IS IS         IS IS   IS IS IS IS         IS IS

$$
PRZ012-012000-
Culebra-
Including the city of Culebra
502 AM AST Mon Sep 1 2025

Date             Mon 09/01/25            Tue 09/02/25            Wed 09/03/25
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 93          79    84 88 92    75 78 82    85 88 92
Temp             84 88 89 84 81 80 79 78 84 87 87 84 81 80 79 79 84 87 88 84 82
Dewpt            77 77 76 77 76 77 77 77 77 78 77 78 77 78 77 77 77 78 77 78 77
RH               80 70 66 80 85 91 94 97 80 75 72 82 88 94 94 94 80 75 70 82 85
Wind dir          E SE SE SE  E  E  E  E  E SE SE  E  E  E  E  E  E  E  E  E  E
Wind spd         11 11 10 10 12 13 13 14 14 13 12 11 12 13 13 13 14 17 14 14 13
Clouds           B1 SC B1 SC SC SC B1 B1 SC SC SC SC SC SC B1 B1 B2 B2 SC SC B1
PoP 12hr                     40          50          20          50          50
QPF 12hr                   0.16        0.14        0.07        0.12        0.19
Snow 12hr                    MM          MM          MM
Rain shwrs       SC SC SC SC IS IS SC SC IS IS IS IS IS IS SC SC SC SC SC SC SC
Heat index       94100100 94 89 85 82 81 93 99100 94 88 85 81 81 94 99 99 94 89
Max heat         98   106   105    92    97   106   105    93    98   107   106
Heat                 Y  Y


Date          Thu 09/04/25  Fri 09/05/25  Sat 09/06/25  Sun 09/07/25
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    88      79    89      78    89      79    87
Temp          79 85 88 82   79 84 88 82   79 84 88 82   79 84 87 81
Dewpt         76 76 76 76   77 77 78 78   78 78 78 77   77 77 76 77
PWind dir         E     E       E     E       E     E       E     E
Wind char        GN    GN      GN    GN      BZ    BZ      BZ    GN
Avg clouds    B1 B1 SC SC   SC SC SC SC   SC SC SC SC   SC B1 B2 B2
PoP 12hr         40    30      20    50      50    50      60    60
Rain shwrs    SC SC SC IS   IS IS SC SC   SC SC SC SC   SC NM NM NM
Tstms                             IS IS                       IS IS

$$
PRZ013-012000-
Vieques-
Including the city of Vieques
502 AM AST Mon Sep 1 2025

Date             Mon 09/01/25            Tue 09/02/25            Wed 09/03/25
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 90 93    76 79 82    85 88 91    74 77 82    85 88 92
Temp             85 89 89 85 81 80 79 78 84 87 88 83 80 79 78 78 84 87 88 84 81
Dewpt            76 76 75 75 75 76 76 76 76 76 75 76 75 76 76 76 76 76 75 76 75
RH               75 66 64 72 82 88 91 94 77 70 66 80 85 91 94 94 77 70 66 77 82
Wind dir          E SE SE SE  E  E  E  E  E SE SE  E  E  E  E  E  E  E  E  E  E
Wind spd         10 10  9  9 11 13 13 13 13 12 10 10 11 13 12 12 14 16 13 13 13
Clouds           SC SC B1 B1 SC SC B1 B2 SC FW SC SC B1 B1 B1 B1 B2 B2 SC SC SC
PoP 12hr                     40          50          30          50          50
QPF 12hr                   0.16        0.18   0.04-0.10        0.14        0.16
Snow 12hr                    MM          MM          MM
Rain shwrs       SC SC SC SC SC IS SC SC SC IS IS IS SC SC SC SC SC SC IS IS SC
Heat index       93 99 99 93 87 84 80    93 98 98 92 86 81       92 98 98 93 87
Max heat         96   105   103    92    96   103   101    92    95   103   101
Heat                 Y  Y


Date          Thu 09/04/25  Fri 09/05/25  Sat 09/06/25  Sun 09/07/25
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    89      78    89      78    89      78    88
Temp          79 85 89 81   79 84 89 81   79 84 88 81   78 84 88 81
Dewpt         75 75 74 74   76 76 75 76   77 77 76 75   76 76 75 75
PWind dir         E     E       E     E       E     E       E     E
Wind char        GN    GN      GN    BZ      BZ    BZ      BZ    GN
Avg clouds    B1 B1 SC SC   SC SC SC SC   SC SC SC SC   SC B1 B2 SC
PoP 12hr         40    30      20    50      50    50      60    60
Rain shwrs    SC SC SC IS   IS IS SC SC   SC SC SC SC   SC NM NM SC
Tstms                             IS IS                          IS

$$
VIZ001-012000-
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
502 AM AST Mon Sep 1 2025

Date             Mon 09/01/25            Tue 09/02/25            Wed 09/03/25
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 92    71 78 82    82 84 90    71 78 82    83 85 91
Temp             82 84 85 82 80 79 78 77 81 84 84 82 80 79 78 78 82 84 85 82 80
Dewpt            76 76 75 76 76 77 76 76 77 77 76 77 76 77 77 76 77 76 76 76 75
RH               82 77 72 82 88 94 94 97 88 80 77 85 88 94 97 94 85 77 75 82 85
Wind dir          E SE SE SE  E  E  E  E  E SE SE  E  E  E  E  E  E  E  E  E  E
Wind spd         11 11 11 10 11 14 14 14 16 14 13 12 13 16 14 14 14 14 13 13 13
Clouds           SC B1 B1 SC SC SC B1 B1 SC FW SC SC SC SC SC SC B1 B1 SC SC B1
PoP 12hr                     40          40          10          40          40
QPF 12hr                   0.13        0.10        0.03        0.09   0.12-0.19
Snow 12hr                    MM          MM          MM
Rain shwrs       SC SC SC SC IS IS SC SC IS IS IS IS IS IS SC SC SC SC SC SC SC
Heat index       89 93 94 88 84 81 80    88 93 93 88 84 82 80 80 90 94 94 89 83
Max heat         97   103   102    92    96   102   102    93    98   103   102
Heat                 Y  Y


Date          Thu 09/04/25  Fri 09/05/25  Sat 09/06/25  Sun 09/07/25
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    86      78    85
Temp          78 82 85 80   78 82 85 80   78 83 86 80   79 82 85 79
Dewpt         76 75 75 75   76 76 77 77   77 77 77 76   76 76 75 76
PWind dir         E     E       E     E       E     E       E     E
Wind char        GN    GN      GN    BZ      BZ    BZ      BZ    GN
Avg clouds    B1 SC SC SC   SC SC SC SC   SC SC SC SC   B1 B1 B1 SC
PoP 12hr         40    20      20    50      50    50      60    60
Rain shwrs    SC IS IS IS   IS IS SC SC   SC SC SC IS   SC NM NM SC
Tstms                             IS IS                       IS IS

$$
VIZ002-012000-
St Croix-
Including the cities of Christiansted, Frederiksted,
Frederiksted Southeast, and Grove Place
502 AM AST Mon Sep 1 2025

Date             Mon 09/01/25            Tue 09/02/25            Wed 09/03/25
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 95          81    85 88 92    77 79 83    85 88 94
Temp             85 88 89 85 83 81 80 80 85 87 88 84 82 80 80 79 84 87 88 84 81
Dewpt            76 76 76 77 76 77 77 77 77 77 77 77 76 77 76 77 77 77 76 77 76
RH               75 68 66 77 80 88 91 91 77 72 70 80 82 91 88 94 80 72 68 80 85
Wind dir          E SE SE SE  E  E  E  E  E SE SE  E  E  E  E  E  E  E  E  E  E
Wind spd         10 12 11 10 10 11 11 11 12 13 12 11 11 11 11 12 14 14 14 12 11
Clouds           SC SC B1 B1 SC SC B1 B1 SC SC SC SC SC SC SC SC B2 B2 SC SC SC
PoP 12hr                     40          40          10          50          50
QPF 12hr                   0.15        0.11        0.04        0.10        0.14
Snow 12hr                    MM          MM          MM
Rain shwrs       IS SC SC SC IS IS SC SC IS IS IS IS IS IS SC SC SC SC IS IS SC
Heat index       94 99100 95 91 89 86 85 94 99 99 94 89 86 83 83 94 98 99 93 87
Max heat        100   110   108    94   100   107   106    93   100   109   107
Heat                 Y  Y


Date          Thu 09/04/25  Fri 09/05/25  Sat 09/06/25  Sun 09/07/25
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    88      78    87      79    87      78    87
Temp          79 84 88 81   79 83 87 82   79 84 87 81   79 83 87 81
Dewpt         76 75 76 76   76 76 77 77   77 77 77 76   76 76 76 76
PWind dir         E     E       E     E       E     E       E     E
Wind char        GN    GN      GN    GN      GN    GN      GN    GN
Avg clouds    SC SC FW SC   SC SC SC SC   SC SC SC B1   B2 B1 SC SC
PoP 12hr         30    20      20    50      50    60      60    40
Rain shwrs    SC IS IS IS   IS IS SC SC   SC SC SC NM   NM NM IS SC
Tstms                             IS IS                       IS IS

$$