Point Forecast Matrices
Issued by NWS San Juan, PR

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Point Forecast Matrices
National Weather Service San Juan PR
503 PM AST Wed Oct 15 2025

PRZ001-160800-
Luis Munoz Marin International Airport-San Juan
18.43N  66.00W Elev. 9 ft
503 PM AST Wed Oct 15 2025

Date           10/15/25      Thu 10/16/25            Fri 10/17/25            Sat
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                      78          92          79          91          77
Temp             82 80 79 78 86 91 92 86 83 81 80 79 86 90 91 84 81 79 78 77 84
Dewpt            74 74 74 74 74 75 75 74 75 75 74 74 75 75 76 75 75 75 75 74 75
RH               77 82 85 88 68 60 58 68 77 82 82 85 70 62 62 74 82 88 91 90 74
Wind dir         SW  S  S  S SW SW NW SW  S  S SW  S  S SW SW SW SW  S  N  N  S
Wind spd          3  2  4  5  4  5  2  2  4  5  4  4  4  4  2  1  3  4  3  2  2
Clouds           OV B1 SC SC SC SC OV OV SC SC SC FW SC SC OV OV SC SC B1 B1 SC
PoP 12hr                     70          90          10          90          40
QPF 12hr                   0.16        1.66        0.02        1.57        0.13
Rain shwrs        L  C              D  D  S  S  S  S  S  S  D  D  C  C  C  C  S
Tstms             S                 S  S                    S  S
Heat index       88 85       94102103 94 90 87 84    94101102 92 87 84       92
Max heat         93    87    94   103   101    89    94   102   101    86    92


Date           10/18  Sun 10/19/25  Mon 10/20/25  Tue 10/21/25  Wed 10/22/25
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      78    90      79    90      78    90      78    90
Temp          90 82   79 85 90 82   80 85 90 82   79 85 90 82   79 85 90 82
Dewpt         77 75   75 76 76 76   75 75 76 75   75 75 75 74   74 74 75 75
PWind dir        SE      SE     E       E     E       E     E       E     E
Wind char        LT      LT    GN      GN    GN      GN    GN      GN    GN
Avg clouds    B1 B1   SC SC B1 B1   SC SC B1 B1   FW FW FW FW   CL FW SC SC
PoP 12hr         60      30    50      40    50       5     5      10    10
Rain shwrs     L  L    S  C  C  C    S  C  C  C    S  S             S  S  S
Tstms          S  S

$$
PRZ002-160800-
Roosevelt Roads Naval Airstation-Ceiba PR
18.25N  65.63W Elev. 39 ft
503 PM AST Wed Oct 15 2025

Date           10/15/25      Thu 10/16/25            Fri 10/17/25            Sat
AST 3hrly     17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      77          89          77          89          76
Temp             81 79 78 77 84 88 89 83 81 79 78 77 84 88 89 83 80 78 77 76 83
Dewpt            75 75 74 75 77 77 77 76 75 76 76 76 77 77 77 77 76 76 75 76 78
RH               82 88 88 94 80 70 68 80 82 91 94 97 80 70 68 82 88 94 94100 85
Wind dir         SW SW SW SW SW  S  S SW SW SW SW SW SW SW SW SW SW SW SW SW  S
Wind spd          5  3  4  8  8 11 12 12  9  9  8  8  9 10 11 11  8  5  4  3  3
Clouds           B2 B1 SC SC SC SC OV OV SC FW SC FW SC SC B2 B2 SC SC B2 B2 B2
PoP 12hr                     60          70          10          50          50
QPF 12hr                   0.14        0.90        0.02        0.32        0.31
Rain shwrs        L  C  C  S     S  L  L  S     S     S  S  C  C  C  C  C  C  C
Tstms             S                 S  S                    S  S        S  S
Heat index       86 83       93101101 92 86 83       93101102 91 85          93
Max heat         91    85    93   102   100    85    93   102   100    84    93


Date           10/18  Sun 10/19/25  Mon 10/20/25  Tue 10/21/25  Wed 10/22/25
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      77    89      78    89      78    89      78    89
Temp          89 81   78 84 89 81   79 84 89 81   79 84 89 81   79 84 89 81
Dewpt         77 77   76 78 77 76   76 78 77 76   76 77 77 75   75 77 76 76
PWind dir         S      SE     E       E     E       E     E       E     E
Wind char        LT      LT    GN      GN    GN      GN    GN      GN    BZ
Avg clouds    B1 B1   B2 B2 B2 B1   B1 B1 B1 SC   SC SC FW FW   CL FW SC SC
PoP 12hr         60      60    50      50    50      20    10      20    20
Rain shwrs     C  L    L  L  C  C    C  C  C  S    S  S  S          S  S  S
Tstms             S    S  S

$$
PRZ007-160800-
Mercedita Airport-Ponce PR
18.02N  66.56W Elev. 26 ft
503 PM AST Wed Oct 15 2025

Date           10/15/25      Thu 10/16/25            Fri 10/17/25            Sat
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                      76          89          76          90          76
Temp             80 78 77 76 83 88 89 83 80 78 77 76 84 89 90 83 80 78 77 76 84
Dewpt            72 72 72 73 73 73 72 72 73 73 73 73 74 73 73 73 73 73 73 73 73
RH               77 82 85 90 72 61 57 70 79 85 87 90 72 59 58 72 79 85 87 90 70
Wind dir          N  N  N NW  W SW SW SW  W NW NW  W SW SW SW SW SW  S  S  N  E
Wind spd          2  2  3  2  1 11 13  9  4  3  3  3  5  9  9  5  2  2  3  3  2
Clouds           SC SC B1 B1 SC SC B1 SC SC B1 B2 B2 B1 B1 B2 B2 B1 B1 B2 B2 B2
PoP 12hr                     40          40          60          60          60
QPF 12hr                   0.09        0.17        0.38        0.38        0.45
Rain shwrs        C  S  C  C  C  C  C  C  S  C  L  L  C  C  L  L  C  C  L  L  L
Tstms                                           S  S        S  S        S  S  S
Heat index       84          89 95 96 88 84          91 97 98 89 84          90
Max heat         88    83    89    96    95    83    91    98    97    83    90


Date           10/18  Sun 10/19/25  Mon 10/20/25  Tue 10/21/25  Wed 10/22/25
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      76    91      77    91      76    90      76    89
Temp          90 80   77 84 91 81   78 85 91 81   77 84 90 80   77 83 89 80
Dewpt         72 73   72 72 72 70   72 72 69 71   71 70 71 71   71 72 73 72
PWind dir        SE       E     E      NE     E       E     E       E     E
Wind char        LT      LT    GN      LT    GN      LT    GN      LT    GN
Avg clouds    B2 B1   SC SC SC SC   FW FW SC FW   CL CL FW SC   SC FW FW FW
PoP 12hr         60      10    30      10    10       0    10       5    10
Rain shwrs     L  C    S  S  C  C       S  S  S          S  S    S  S  S  S
Tstms          S

$$
PRZ008-160800-
Rafael Hernandez Airport-Aguadilla PR
18.50N  67.13W Elev. 237 ft
503 PM AST Wed Oct 15 2025

Date           10/15/25      Thu 10/16/25            Fri 10/17/25            Sat
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                      76          88          76          87          75
Temp             80 78 77 76 83 87 88 82 80 78 77 76 82 86 87 81 79 77 76 75 82
Dewpt            75 75 74 73 75 76 76 75 75 75 74 73 76 76 76 75 75 75 73 72 75
RH               85 91 90 90 77 70 68 79 85 91 90 90 82 72 70 82 88 94 90 90 79
Wind dir          S  S SW SW SW SW SW SW SW  S  S SW SW SW SW SW SW  S  S  S SE
Wind spd          9  9 11 11 11 14 17 14 12 11 11 10 10 12 13 13 10  9  6  4  3
Clouds           SC SC SC B1 B2 B1 SC B1 B1 B2 B2 B2 SC SC B2 B2 SC SC B1 B1 SC
PoP 12hr                     50          50          60          50          40
QPF 12hr                   0.14        0.21        0.36        0.19        0.09
Rain shwrs        S        C  C  C  S  C  C  C  L  C  C  C  C  C  C  C  C  C  S
Tstms                         S              S  S  S        S  S
Heat index       85          90 98 99 89 84          89 97 97 87             88
Max heat         90    83    90   100    97          89    98    96          88


Date           10/18  Sun 10/19/25  Mon 10/20/25  Tue 10/21/25  Wed 10/22/25
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      75    87      76    88      76    88      76    87
Temp          87 79   76 82 87 79   77 83 88 80   77 83 88 80   77 82 87 79
Dewpt         77 75   74 75 77 76   74 76 77 75   74 74 76 74   72 74 75 74
PWind dir         S       E     E       E     E       E     E       E     E
Wind char        LT      LT    GN      GN    BZ      GN    BZ      BZ    BZ
Avg clouds    SC B1   SC SC SC B1   SC SC SC B1   CL CL SC SC   CL CL FW SC
PoP 12hr         50      20    60      20    60       0    50       0    40
Rain shwrs     C  C    S  S  L  L    S  S  L  L          C  C          C  C
Tstms                        S  S          S  S

$$
PRZ010-160800-
Eugenio Maria de Hosto Airport-Mayaguez PR
18.27N  67.15W Elev. 28 ft
503 PM AST Wed Oct 15 2025

Date           10/15/25      Thu 10/16/25            Fri 10/17/25            Sat
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          92          75          92          74
Temp             80 78 76 75 85 91 92 84 80 78 76 75 85 91 92 83 79 77 75 74 84
Dewpt            76 76 75 75 77 78 78 76 76 75 75 75 77 79 79 77 76 75 75 74 76
RH               88 94 97100 77 66 64 77 88 91 97100 77 68 66 82 91 94100100 77
Wind dir          S  S  S SW SW SW SW SW SW  S  S  S  S  S  S  S  S  S  S SE SE
Wind spd          6  5  9  6  8 12 13 11  8  9  9  8  9 11 12 10  6  5  4  3  3
Clouds           SC SC SC SC B2 OV B2 B1 SC B2 OV OV B1 B1 B2 B2 SC SC B2 B2 SC
PoP 12hr                     50          70          70          50          50
QPF 12hr                   0.11        0.34        0.47        0.27        0.25
Rain shwrs        S     S  C  C  L  C  C  C  C  L  L  C  C  C  C  S  S  C  C  C
Tstms                         S  S  S        S  S  S        S  S        S  S
Heat index       86          95106107 92 86          95107108 92 84          93
Max heat         93    84    95   108   104    83    95   109   105          93


Date           10/18  Sun 10/19/25  Mon 10/20/25  Tue 10/21/25  Wed 10/22/25
AST 6hrly     14 20   02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          92      74    93      75    94      74    93      74    92
Temp          92 79   75 85 93 80   76 86 94 80   75 85 93 80   75 84 92 79
Dewpt         79 76   75 76 79 77   74 76 79 76   74 76 77 75   73 75 77 75
PWind dir         S       E    NE       E     E       E     E       E     E
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B1 B1   SC SC SC B1   FW FW SC B1   CL CL SC B1   FW FW SC B1
PoP 12hr         50      10    60       5    60       0    50       5    50
Rain shwrs     C  C    S  S  L  L          L  L          C  C    S  S  C  C
Tstms                        S  S          S  S

$$
VIZ001-160800-
CYRIL E. King Airport-St Thomas USVI
18.33N  64.97W Elev. 23 ft
503 PM AST Wed Oct 15 2025

Date           10/15/25      Thu 10/16/25            Fri 10/17/25            Sat
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                      80          89          81          91          81
Temp             83 82 81 80 85 88 89 85 83 82 82 81 87 90 91 86 84 83 82 81 86
Dewpt            76 77 76 77 78 78 78 78 77 78 77 77 78 79 78 78 77 78 77 77 78
RH               80 85 85 91 80 72 70 80 82 88 85 88 75 70 66 77 80 85 85 88 77
Wind dir         SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW  S  S
Wind spd         10 11 10 11 13 17 16 14 16 13 13 13 14 13 14 14 13 11  9  6  6
Clouds           B1 B2 B2 B2 B1 SC B2 B2 SC SC SC B2 SC SC B2 B2 B1 B1 B1 B1 B2
PoP 12hr                     60          50          50          50          60
QPF 12hr                   0.16        0.25        0.17        0.24        0.32
Rain shwrs        C  L  C  L  C  C  C  C  S  S  C  C  S  S  C  C  C  C  C  C  L
Tstms                S  S  S        S  S           S        S  S              S
Heat index       91 90 87 86 96102103 97 93 92 89 89 99106106 98 94 92 90 88 98
Max heat         95    91    96   103   102    92    99   107   105    93    98


Date           10/18  Sun 10/19/25  Mon 10/20/25  Tue 10/21/25  Wed 10/22/25
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      82    91      81    90      81    90      81    90
Temp          90 84   83 87 91 84   82 86 90 84   82 86 90 84   82 86 90 84
Dewpt         77 77   77 78 78 77   78 78 78 77   77 77 77 76   76 77 77 76
PWind dir         S       E     E       E     E       E     E       E     E
Wind char        LT      GN    BZ      BZ    BZ      BZ    BZ      BZ    BZ
Avg clouds    B2 B2   B2 B2 B2 B1   B1 B1 SC FW   SC SC SC SC   SC SC SC SC
PoP 12hr         60      60    50      50    50      10    20      20    20
Rain shwrs     L  L    L  L  C  C    C  C  C  S    S  S  S  S    S  S  S  S
Tstms          S  S    S  S

$$
VIZ002-160800-
Henry E. Rohlsen Airport-St Croix USVI
17.70N  64.80W Elev. 74 ft
503 PM AST Wed Oct 15 2025

Date           10/15/25      Thu 10/16/25            Fri 10/17/25            Sat
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                      78          89          77          89          76
Temp             82 80 79 78 84 88 89 83 81 79 78 77 84 88 89 83 80 78 77 76 84
Dewpt            75 75 75 76 77 77 78 77 76 76 77 77 77 78 77 77 77 77 76 76 77
RH               79 85 88 94 80 70 70 82 85 91 97100 80 72 68 82 91 97 97100 80
Wind dir          S SW SW SW SW SW SW SW SW SW SW SW SW  S  S  S  S  S  S  S  S
Wind spd          8  6  9  8  9 13 13 12 10 10 11 10 10 12 12 11 10  8  6  6  5
Clouds           B2 SC B1 B2 B1 B2 B1 SC SC SC B1 SC B1 B1 B2 B2 B1 B1 B1 B1 B2
PoP 12hr                     50          50          40          50          60
QPF 12hr                   0.12        0.16        0.12        0.17        0.32
Rain shwrs        C  C  C  C  C  C  C  C  C  S  C  C  C  C  C  C  C  C  C  C  L
Tstms             S        S     S                          S  S              S
Heat index       88 85       94101102 92 86 83       94101102 91 85          94
Max heat         93    87    94   103   100    85    94   102   100    84    94


Date           10/18  Sun 10/19/25  Mon 10/20/25  Tue 10/21/25  Wed 10/22/25
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      78    89      77    89      77    89      78    89
Temp          90 82   79 84 89 81   78 84 89 81   78 84 89 81   79 84 89 81
Dewpt         77 76   76 77 77 76   77 78 77 76   76 77 77 75   75 77 76 76
PWind dir        SE       E     E       E     E       E     E       E     E
Wind char        LT      GN    BZ      BZ    BZ      BZ    BZ      BZ    BZ
Avg clouds    B2 B2   B2 B2 SC SC   B1 B1 SC FW   SC SC SC FW   SC SC SC FW
PoP 12hr         60      60    40      40    30      20    20      20    20
Rain shwrs     L  L    L  L  C  C    C  C  C  S    S  S  S  S    S  S  S  S
Tstms          S  S    S  S

$$