Climatological Report (Daily)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
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CDCA42 TJSJ 192007
CLISJU
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
407 PM AST FRI SEP 19 2025
...................................
...THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR SEPTEMBER 19 2025...
VALID TODAY AS OF 0400 PM LOCAL TIME.
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)
TODAY
MAXIMUM 91 1:20 PM 95 2013 89 2 90
MINIMUM 77 1:49 AM 71 1950 77 0 82
AVERAGE 84 83 1 86
PRECIPITATION (IN)
TODAY T 1.92 2014 0.21 -0.21 0.03
MONTH TO DATE 3.59 4.33 -0.74 2.50
SINCE SEP 1 3.59 4.33 -0.74 2.50
SINCE JAN 1 47.21 40.27 6.94 52.71
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 19 18 1 21
MONTH TO DATE 363 342 21 404
SINCE SEP 1 363 342 21 404
SINCE JAN 1 4408 4153 255 4855
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION SE (150)
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM
AVERAGE WIND SPEED 4.1
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 88
LOWEST 59
AVERAGE 74
..........................................................
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 89 95 1981
MINIMUM TEMPERATURE (F) 77 72 1920
SUNRISE AND SUNSET
SEPTEMBER 19 2025.....SUNRISE 6:12 AM AST SUNSET 6:23 PM AST
SEPTEMBER 20 2025.....SUNRISE 6:13 AM AST SUNSET 6:22 PM AST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$