931
CDCA42 TJSJ 190856
CLISJU
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
456 AM AST FRI DEC 19 2025
...............................
..THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR DECEMBER 18 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 86 1:03 PM 89 1980 84 2 85
MINIMUM 71 4:31 AM 65 1958 73 -2 76
AVERAGE 79 79 0 81
PRECIPITATION (IN)
YESTERDAY 0.17 1.63 2024 0.14 0.03 1.47
MONTH TO DATE 1.93 3.06 -1.13 2.92
SINCE DEC 1 1.93 3.06 -1.13 2.92
SINCE JAN 1 62.65 58.08 4.57 77.15
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 14 14 0 16
MONTH TO DATE 277 252 25 304
SINCE DEC 1 277 252 25 304
SINCE JAN 1 5983 5625 358 6571
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION E (70)
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION E (70)
AVERAGE WIND SPEED 5.5
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 94
LOWEST 61
AVERAGE 78
......................................................
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 84 89 1994
MINIMUM TEMPERATURE (F) 73 66 1898
SUNRISE AND SUNSET
DECEMBER 19 2025......SUNRISE 6:50 AM AST SUNSET 5:52 PM AST
DECEMBER 20 2025......SUNRISE 6:51 AM AST SUNSET 5:53 PM AST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page