921
CDCA42 TJSJ 210912
CLISJU
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
512 AM AST SUN DEC 21 2025
...............................
..THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR DECEMBER 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 85 2:08 PM 90 1995 84 1 87
MINIMUM 75 7:45 AM 66 1959 73 2 76
AVERAGE 80 78 2 82
PRECIPITATION (IN)
YESTERDAY 0.16 1.89 1987 0.14 0.02 T
MONTH TO DATE 2.35 3.35 -1.00 3.38
SINCE DEC 1 2.35 3.35 -1.00 3.38
SINCE JAN 1 63.07 58.37 4.70 77.61
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 15 14 1 17
MONTH TO DATE 307 280 27 337
SINCE DEC 1 307 280 27 337
SINCE JAN 1 6013 5653 360 6604
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WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION E (70)
AVERAGE WIND SPEED 5.6
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90
LOWEST 61
AVERAGE 76
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THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 84 90 1965
MINIMUM TEMPERATURE (F) 73 64 1958
SUNRISE AND SUNSET
DECEMBER 21 2025......SUNRISE 6:51 AM AST SUNSET 5:53 PM AST
DECEMBER 22 2025......SUNRISE 6:52 AM AST SUNSET 5:54 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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