Point Forecast Matrices
Issued by NWS San Juan, PR

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Point Forecast Matrices
National Weather Service San Juan PR
503 AM AST Mon Jul 14 2025

PRZ001-142000-
Luis Munoz Marin International Airport-San Juan
18.43N  66.00W Elev. 9 ft
503 AM AST Mon Jul 14 2025

Date             Mon 07/14/25            Tue 07/15/25            Wed 07/16/25
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                      90          77          91          78          90
Temp             85 89 90 87 81 79 78 79 85 90 91 88 82 80 79 80 85 89 90 87 82
Dewpt            73 74 73 74 72 73 73 73 74 75 75 76 75 75 75 74 75 76 76 76 76
RH               67 61 58 65 74 82 85 82 70 62 60 68 79 85 88 82 72 66 64 70 82
Wind dir          E  E  E  E  E  E  E SE  E  E  E  E  E  E  E  E  E  E  E  E  E
Wind spd         10 13 16 13 10 11 10  9 10 13 14 13 11 11 11  9 11 14 14 12 10
Clouds           SC SC B2 B2 CL FW FW SC SC SC B1 B1 SC SC SC SC B2 B2 B2 B2 SC
PoP 12hr                     50          20          40          60          60
QPF 12hr                   0.52        0.05        0.33        0.11        0.74
Rain shwrs        C  C  C  C        S  S  S  S  C  C  S  S  S  S  L  L  L  L  S
Tstms                                           S  S                    S  S
Heat index       91 98 98 95 86 83       93100102 99 89 85    84 94100102 98 89
Max heat         91    99    99    85    93   102   101    88    94   102   101


Date          Thu 07/17/25  Fri 07/18/25  Sat 07/19/25  Sun 07/20/25
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    91      78    91      77    91      77    91
Temp          78 86 91 82   79 86 91 82   78 85 91 82   78 85 91 82
Dewpt         75 76 77 76   76 76 75 75   75 74 75 74   75 75 75 75
PWind dir         E     E       E     E       E     E      SE     E
Wind char        GN    GN      GN    GN      GN    GN      LT    GN
Avg clouds    SC SC SC FW   CL FW SC FW   CL FW SC FW   CL FW SC SC
PoP 12hr         30    30      20    20      10    30      20    20
Rain shwrs     S  C  C  S       S  S  S       S  S  S       S  S  S

$$
PRZ002-142000-
Roosevelt Roads Naval Airstation-Ceiba PR
18.25N  65.63W Elev. 39 ft
503 AM AST Mon Jul 14 2025

Date             Mon 07/14/25            Tue 07/15/25            Wed 07/16/25
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                      88          78          89          79          88
Temp             84 87 88 86 81 80 78 79 85 88 89 87 82 81 79 80 84 87 88 86 83
Dewpt            73 74 73 74 73 73 73 73 74 75 75 76 76 75 75 75 75 76 76 76 76
RH               70 65 61 68 77 79 85 82 70 66 64 70 82 82 88 85 74 70 68 72 80
Wind dir          E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E
Wind spd         13 13 12 12 11 12 11 11 11 11 11 12 12 13 14 12 13 14 13 12 11
Clouds           B2 B1 B2 B2 CL SC SC SC SC B2 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 SC
PoP 12hr                     50          20          50          60          60
QPF 12hr                   0.55        0.12        0.20        0.17        0.75
Rain shwrs        C  C  C  C     S  S  S  S  C  C  C  C  C  C  C  L  L  L  L  C
Tstms                                           S  S  S  S              S  S
Heat index       90 96 96 93 86 84    83 92 98 99 97 90 86 84 85 93 98 99 96 91
Max heat         90    97    96    85    92   100    99    89    93    99    99


Date          Thu 07/17/25  Fri 07/18/25  Sat 07/19/25  Sun 07/20/25
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          80    89      80    89      78    89      79    89
Temp          80 85 89 83   80 85 89 82   78 85 89 82   79 85 89 82
Dewpt         76 76 77 76   75 75 75 75   74 74 75 74   75 75 75 75
PWind dir         E     E       E     E       E     E       E     E
Wind char        GN    GN      GN    GN      GN    GN      GN    GN
Avg clouds    SC SC SC FW   CL FW SC SC   SC SC SC SC   SC SC SC SC
PoP 12hr         40    40      20    20      30    30      20    20
Rain shwrs     C  C  C  S       S  S  S    S  C  C  S    S  S  S  S

$$
PRZ007-142000-
Mercedita Airport-Ponce PR
18.02N  66.56W Elev. 26 ft
503 AM AST Mon Jul 14 2025

Date             Mon 07/14/25            Tue 07/15/25            Wed 07/16/25
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                      89          75          91          77          92
Temp             83 88 89 86 80 77 76 77 85 90 91 88 82 79 78 79 86 91 92 88 82
Dewpt            72 74 75 75 73 71 71 70 72 75 75 76 74 72 72 72 74 75 77 77 75
RH               70 63 64 70 79 82 85 79 65 62 60 68 77 79 82 79 68 60 62 70 79
Wind dir          E SE SE SE  E  E NE NE  E SE SE  E  E  E  E  E  E  E  E  E  E
Wind spd          4 12 11 11  9  6  6  5  5 14 14 13 10  6  5  4  6 16 19 16 10
Wind gust                                   26 25 24                26 32 26
Clouds           SC CL SC SC FW FW SC FW CL CL SC CL FW FW FW FW FW FW B1 B1 SC
PoP 12hr                     10          10           5           5          40
QPF 12hr                   0.12        0.04        0.01        0.02        0.22
Rain shwrs        S     S  S        S           S     S  S  S  S        C  C  S
Tstms                                                                   S  S
Heat index       89 97 99 94 84          90100102 98 88 83       94102106101 89
Max heat         89    99   100          90   102   101    86    94   106   105


Date          Thu 07/17/25  Fri 07/18/25  Sat 07/19/25  Sun 07/20/25
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    91      77    92      75    90      76    90
Temp          78 85 91 82   78 86 92 81   76 84 90 81   77 84 90 81
Dewpt         73 75 77 74   73 74 77 75   72 74 77 74   72 74 76 74
PWind dir         E     E       E     E       E     E       E     E
Wind char        LT    GN      LT    GN      LT    GN      LT    GN
Avg clouds    SC FW FW SC   CL CL FW SC   CL FW FW FW   CL CL FW FW
PoP 12hr         10    20       0    40       0    20       0     0
Rain shwrs     S  S  S  S          C  C          S  S

$$
PRZ008-142000-
Rafael Hernandez Airport-Aguadilla PR
18.50N  67.13W Elev. 237 ft
503 AM AST Mon Jul 14 2025

Date             Mon 07/14/25            Tue 07/15/25            Wed 07/16/25
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                      87          75          87          77          87
Temp             82 86 87 84 79 77 75 77 82 86 87 85 80 79 77 78 83 86 87 84 80
Dewpt            72 73 74 74 74 74 73 73 73 73 75 75 75 76 75 76 75 75 76 75 76
RH               72 65 65 72 85 90 94 87 74 65 68 72 85 91 94 94 77 70 70 74 88
Wind dir          E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E
Wind spd         11  5  4 10  5  8 12 10 10 13 17 19 20 11 13 11 14 20 20 20 18
Clouds           FW CL OV B2 SC SC CL CL CL CL B2 OV SC SC SC SC CL CL B1 B1 B1
PoP 12hr                     70          30          70          30          40
QPF 12hr                   0.91        0.16        0.95        0.08        0.33
Rain shwrs              L  L  C  S              C  L  S  S  C  C        C  C  C
Tstms                   S  S                    S  S                    S  S  S
Heat index       87 93 95 91 83          88 93 96 93 86          90 95 98 92 85
Max heat         87    95    95          88    96    96    84    90    98    97


Date          Thu 07/17/25  Fri 07/18/25  Sat 07/19/25  Sun 07/20/25
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    88      77    87      76    87      75    88
Temp          76 83 88 81   77 83 87 80   76 83 87 79   75 83 88 79
Dewpt         75 75 77 77   76 75 75 75   76 74 75 74   75 74 76 75
PWind dir         E     E       E     E       E     E       E     E
Wind char        GN    BZ      GN    GN      GN    GN      GN    GN
Avg clouds    B1 SC FW SC   CL CL FW FW   CL CL FW SC   SC FW FW B1
PoP 12hr         40    30       0    10       0    40      10    50
Rain shwrs     C  C  C  C          S  S          S  S    S  S  C  C
Tstms          S

$$
PRZ010-142000-
Eugenio Maria de Hosto Airport-Mayaguez PR
18.27N  67.15W Elev. 28 ft
503 AM AST Mon Jul 14 2025

Date             Mon 07/14/25            Tue 07/15/25            Wed 07/16/25
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                      90          73          92          74          92
Temp             83 89 90 86 79 76 74 75 84 90 92 88 80 77 75 76 85 91 92 88 80
Dewpt            74 76 77 76 75 74 72 71 73 75 77 77 76 75 74 73 75 78 79 79 77
RH               74 66 66 72 88 94 93 87 70 62 62 70 88 94 97 90 72 66 66 75 91
Wind dir          E SE NW  N  E  E  E  E  E  E SE  E  E  E  E  E  E  E  E  E  E
Wind spd          4  3  2  8  3  8  5  4  5  3  3  2  3  3  4  5  5  4  4  3  3
Clouds           CL CL OV OV SC CL CL CL CL CL B2 B2 SC SC SC SC CL CL OV OV OV
PoP 12hr                     70          30          60          20          70
QPF 12hr                   1.06        0.11        0.93        0.06        1.15
Rain shwrs              L  L  C                 L  L  S  S  S  S        L  L  L
Tstms                   S  S                    S  S                    S  S  S
Heat index       89100103 96             91101106 99 86          93105109102 87
Max heat         89   103   102          91   106   105    83    93   109   108


Date          Thu 07/17/25  Fri 07/18/25  Sat 07/19/25  Sun 07/20/25
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    93      75    92      73    91      74    92
Temp          75 85 93 81   76 85 92 79   74 84 91 80   75 85 92 80
Dewpt         74 76 80 77   75 76 79 77   74 75 78 76   74 75 78 77
PWind dir         E     E       E    NE       E     E       E     E
Wind char        LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B2 B1 SC B1   CL CL FW SC   FW FW SC B1   FW FW SC B1
PoP 12hr         70    70       0    60       0    80       5    60
Rain shwrs     L  L  L  L          L  L          L  L          L  L
Tstms          S  S  S  S          S  S          S  S          S  S

$$
VIZ001-142000-
CYRIL E. King Airport-St Thomas USVI
18.33N  64.97W Elev. 23 ft
503 AM AST Mon Jul 14 2025

Date             Mon 07/14/25            Tue 07/15/25            Wed 07/16/25
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                      90          80          90          80          91
Temp             86 89 90 88 83 82 80 81 86 89 90 88 83 82 80 81 87 90 91 89 84
Dewpt            75 74 74 74 74 74 75 75 76 76 77 76 76 77 77 76 77 77 77 76 77
RH               70 61 60 63 74 77 85 82 72 66 66 68 80 85 91 85 72 66 64 66 80
Wind dir          E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E
Wind spd         17 17 16 16 17 17 16 17 14 17 17 18 19 20 20 20 19 18 18 18 18
Clouds           B2 B1 B1 SC CL FW CL CL SC B2 B1 B1 B1 B1 SC SC B2 B2 B2 B2 SC
PoP 12hr                     50          10          50          60          60
QPF 12hr                   0.36        0.04        0.18        0.16        0.46
Rain shwrs        C  C  C  C              S  C  C  C  C  C  C  C  L  L  C  C  C
Tstms                                           S  S  S  S              S  S
Heat index       95 98 99 96 90 88 86 87 96101103 98 92 90 87 88 98103105100 95
Max heat         95    99    99    89    96   103   103    91    98   105   104


Date          Thu 07/17/25  Fri 07/18/25  Sat 07/19/25  Sun 07/20/25
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          81    91      81    91      80    90      81    91
Temp          81 87 91 84   81 87 91 84   80 86 90 84   81 87 91 84
Dewpt         77 77 77 77   77 76 76 76   75 75 75 76   75 76 76 76
PWind dir         E     E       E     E       E     E       E     E
Wind char        BZ    BZ      BZ    GN      GN    GN      BZ    BZ
Avg clouds    SC SC B1 SC   SC SC SC SC   SC SC SC FW   SC SC SC SC
PoP 12hr         40    40      10    10      40    40      20    20
Rain shwrs     C  C  C  S    S  S  S  S    S  C  C  S    S  S  S  S

$$
VIZ002-142000-
Henry E. Rohlsen Airport-St Croix USVI
17.70N  64.80W Elev. 74 ft
503 AM AST Mon Jul 14 2025

Date             Mon 07/14/25            Tue 07/15/25            Wed 07/16/25
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                      88          77          89          78          89
Temp             83 87 88 85 81 79 77 79 84 88 89 86 82 80 78 79 85 88 89 86 82
Dewpt            74 74 74 73 73 74 73 74 75 75 76 76 75 76 76 76 76 76 76 76 76
RH               74 65 63 67 77 85 87 85 74 66 66 72 79 88 94 91 75 68 66 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
Wind spd         16 16 16 14 14 14 14 14 13 13 13 16 16 18 18 17 17 17 17 16 14
Clouds           SC B2 B1 SC SC SC SC CL SC SC B1 B1 B2 B2 B1 B1 B1 B1 B2 B2 SC
PoP 12hr                     50          30          50          50          60
QPF 12hr                   0.40        0.18        0.17        0.16        0.59
Rain shwrs        S  C  C  S  S  C  S     S  C  C  C  C  C  C  C  C  C  L  L  C
Tstms                                           S  S  S  S              S  S
Heat index       90 95 97 92 85          92 98100 96 88 85    84 94 99100 96 89
Max heat         90    98    96    84    92   100   100    87    94   100   100


Date          Thu 07/17/25  Fri 07/18/25  Sat 07/19/25  Sun 07/20/25
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    90      78    89      77    89      78    89
Temp          78 85 90 82   78 85 89 81   77 84 89 82   78 85 89 82
Dewpt         76 77 77 76   75 76 75 75   75 75 75 74   75 75 76 74
PWind dir         E     E       E     E       E     E       E     E
Wind char        BZ    BZ      GN    GN      GN    GN      GN    BZ
Avg clouds    SC FW SC SC   CL CL FW FW   CL FW SC SC   SC FW FW SC
PoP 12hr         30    30       0    10      20    20       5    10
Rain shwrs     C  C  C  S          S  S       S  S  S    S  S  S  S

$$