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

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CDCA42 TJSJ 172001
CLISJU

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
401 PM AST THU SEP 17 2026

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

...THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR SEPTEMBER 17 2026...
VALID TODAY AS OF 0400 PM LOCAL TIME.

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)
 TODAY
  MAXIMUM         93  12:29 PM  95    1995  89      4       91
  MINIMUM         79   6:32 AM  72    1954  78      1       78
  AVERAGE         86                        83      3       85

PRECIPITATION (IN)
  TODAY            T             1.68 1911   0.21  -0.21     0.39
  MONTH TO DATE    4.10                      3.90   0.20     3.03
  SINCE SEP 1      4.10                      3.90   0.20     3.03
  SINCE JAN 1     29.03                     39.84 -10.81    46.65

DEGREE DAYS
 HEATING
  TODAY            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
  TODAY           21                        18      3       20
  MONTH TO DATE  333                       306     27      330
  SINCE SEP 1    333                       306     27      330
  SINCE JAN 1   4451                      4117    334     4375
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    22   HIGHEST WIND DIRECTION     E (90)
  HIGHEST GUST SPEED    29   HIGHEST GUST DIRECTION    SE (120)
  AVERAGE WIND SPEED     6.8


SKY COVER
  AVERAGE SKY COVER 0.5


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
  LIGHT RAIN


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    90
 LOWEST     60
 AVERAGE    75

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


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


SUNRISE AND SUNSET
SEPTEMBER 17 2026.....SUNRISE   6:12 AM AST   SUNSET   6:24 PM AST
SEPTEMBER 18 2026.....SUNRISE   6:12 AM AST   SUNSET   6:24 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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