574  
CDCA42 TJSJ 210423  
CLISJU  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
1223 AM AST THU DEC 21 2023  
   
...............................
 
 
   
..THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR DECEMBER 20 2023
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1898 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 84 12:15 PM 90 1995 84 0 84  
MINIMUM 73 7:15 AM 66 1959 73 0 74  
AVERAGE 79 78 1 79  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.89 1987 0.14 -0.14 0.49  
MONTH TO DATE 5.56 3.35 2.21 2.63  
SINCE DEC 1 5.56 3.35 2.21 2.63  
SINCE JAN 1 54.07 58.37 -4.30 70.67  
 
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 14  
MONTH TO DATE 316 280 36 287  
SINCE DEC 1 316 280 36 287  
SINCE JAN 1 6215 5653 562 5751    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NE (50)  
AVERAGE WIND SPEED 4.8  
 
SKY COVER  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87  
LOWEST 65  
AVERAGE 76  
   
......................................................
 
 
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 2023......SUNRISE 6:51 AM AST SUNSET 5:53 PM AST  
DECEMBER 22 2023......SUNRISE 6:52 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.  
 

 
 
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