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

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416
CDCA42 TJSJ 210853
CLISJU

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
453 AM AST SUN SEP 21 2025

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

...THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR SEPTEMBER 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  11:41 AM  95    1981  89      3       91
  MINIMUM         76   4:45 AM  72    1920  77     -1       77
  AVERAGE         84                        83      1       84

PRECIPITATION (IN)
  YESTERDAY        0.32          7.11 2017   0.21   0.11     0.54
  MONTH TO DATE    3.95                      4.54  -0.59     3.04
  SINCE SEP 1      3.95                      4.54  -0.59     3.04
  SINCE JAN 1     47.57                     40.48   7.09    53.25

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       19                        18      1       19
  MONTH TO DATE  382                       360     22      423
  SINCE SEP 1    382                       360     22      423
  SINCE JAN 1   4427                      4171    256     4874
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    16   HIGHEST WIND DIRECTION    NE (60)
  HIGHEST GUST SPEED    24   HIGHEST GUST DIRECTION     N (360)
  AVERAGE WIND SPEED     2.8


SKY COVER
  AVERAGE SKY COVER 0.3


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    88
 LOWEST     56
 AVERAGE    72

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


THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   89        95      2019
 MINIMUM TEMPERATURE (F)   77        71      1960


SUNRISE AND SUNSET
SEPTEMBER 21 2025.....SUNRISE   6:13 AM AST   SUNSET   6:21 PM AST
SEPTEMBER 22 2025.....SUNRISE   6:13 AM AST   SUNSET   6:20 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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