355
CDCA42 TJSJ 170903
CLIIST
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
503 AM AST WED DEC 17 2025
...............................
...THE CYRIL E. KING AP/ST THOMAS CLIMATE SUMMARY FOR DECEMBER 16 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1953 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 87 2:22 PM 92 1994 85 2 87
MINIMUM 77 6:28 AM 69 1954 75 2 76
AVERAGE 82 80 2 82
PRECIPITATION (IN)
YESTERDAY T 1.04 2004 0.09 -0.09 0.00
MONTH TO DATE 0.89 1.68 -0.79 0.48
SINCE DEC 1 0.89 1.68 -0.79 0.48
SINCE JAN 1 29.55 40.20 -10.65 35.55
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JUL 1 0 0 0 0
COOLING
YESTERDAY 17 15 2 17
MONTH TO DATE 253 248 5 259
SINCE DEC 1 253 248 5 259
SINCE JAN 1 5630 5946 -316 4747
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION SE (120)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION SE (130)
AVERAGE WIND SPEED 9.1
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 94
LOWEST 77
AVERAGE 86
......................................................
THE CYRIL E. KING AP/ST THOMAS CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 85 91 1994
MINIMUM TEMPERATURE (F) 75 65 1972
SUNRISE AND SUNSET
DECEMBER 17 2025......SUNRISE 6:45 AM AST SUNSET 5:47 PM AST
DECEMBER 18 2025......SUNRISE 6:46 AM AST SUNSET 5:48 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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