Climatological Report (Daily)
Issued by NWS San Juan, PR

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926
CDCA42 TJSJ 180906
CLISJU

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
506 AM AST FRI SEP 18 2026

...................................

...THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR SEPTEMBER 17 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1898 TO 2026


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
...................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         93  12:29 PM  95    1995  89      4       91
  MINIMUM         76   5:58 PM  72    1954  78     -2       78
  AVERAGE         85                        83      2       85

PRECIPITATION (IN)
  YESTERDAY        0.26          1.68 1911   0.21   0.05     0.39
  MONTH TO DATE    4.36                      3.90   0.46     3.03
  SINCE SEP 1      4.36                      3.90   0.46     3.03
  SINCE JAN 1     29.29                     39.84 -10.55    46.65

DEGREE DAYS
 HEATING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE SEP 1      0                         0      0        0
  SINCE JUL 1      0                         0      0        0

 COOLING
  YESTERDAY       20                        18      2       20
  MONTH TO DATE  332                       306     26      330
  SINCE SEP 1    332                       306     26      330
  SINCE JAN 1   4450                      4117    333     4375
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    25   HIGHEST WIND DIRECTION     E (90)
  HIGHEST GUST SPEED    34   HIGHEST GUST DIRECTION     E (100)
  AVERAGE WIND SPEED     5.5


SKY COVER
  AVERAGE SKY COVER 0.5


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  THUNDERSTORM
  LIGHT RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    94
 LOWEST     60
 AVERAGE    77

..........................................................


THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   89        96      1995
 MINIMUM TEMPERATURE (F)   78        71      1960


SUNRISE AND SUNSET
SEPTEMBER 18 2026.....SUNRISE   6:12 AM AST   SUNSET   6:24 PM AST
SEPTEMBER 19 2026.....SUNRISE   6:12 AM AST   SUNSET   6:23 PM AST


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




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