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

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CDCA42 TJSJ 210851
CLISJU

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
451 AM AST THU AUG 21 2025

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

...THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR AUGUST 20 2025...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1898 TO 2025


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
...................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         92   2:28 PM  96    1980  89      3       91
  MINIMUM         80   5:37 AM  69    1904  78      2       82
  AVERAGE         86                        84      2       87

PRECIPITATION (IN)
  YESTERDAY        0.00          3.10 1901   0.20  -0.20     0.02
  MONTH TO DATE    5.45                      3.86   1.59     7.05
  SINCE JUN 1     15.03                     14.54   0.49    15.22
  SINCE JAN 1     39.43                     33.51   5.92    48.10

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

 COOLING
  YESTERDAY       21                        18      3       22
  MONTH TO DATE  389                       360     29      424
  SINCE JUN 1   1502                      1466     36     1710
  SINCE JAN 1   3826                      3599    227     4222
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    21   HIGHEST WIND DIRECTION    NE (60)
  HIGHEST GUST SPEED    30   HIGHEST GUST DIRECTION     E (90)
  AVERAGE WIND SPEED     8.3


SKY COVER
  AVERAGE SKY COVER 0.4


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    82
 LOWEST     65
 AVERAGE    74

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


THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   89        97      1980
 MINIMUM TEMPERATURE (F)   78        72      1956


SUNRISE AND SUNSET
AUGUST 21 2025........SUNRISE   6:07 AM AST   SUNSET   6:46 PM AST
AUGUST 22 2025........SUNRISE   6:08 AM AST   SUNSET   6:46 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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