611  
CDCA42 TJSJ 310430  
CLIIST  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
1230 AM AST THU DEC 31 2020  
   
...............................
 
 
...THE CYRIL E. KING AP/ST THOMAS CLIMATE SUMMARY FOR DECEMBER 30 2020...  
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1953 TO 2020  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 84 1:35 PM 90 1987 85 -1 85  
MINIMUM 75 10:45 PM 66 1972 73 2 76  
AVERAGE 80 79 1 81  
 
PRECIPITATION (IN)  
YESTERDAY 0.04 1.67 1992 0.08 -0.04 0.13  
MONTH TO DATE 1.41 2.88 -1.47 3.82  
SINCE DEC 1 1.41 2.88 -1.47 3.82  
SINCE JAN 1 36.17 39.26 -3.09 36.02  
 
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 16  
MONTH TO DATE 463 436 27 498  
SINCE DEC 1 463 436 27 498  
SINCE JAN 1 6395 6030 365 6246    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 42 HIGHEST GUST DIRECTION NE (60)  
AVERAGE WIND SPEED 15.9  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 74  
LOWEST 56  
AVERAGE 65  
   
......................................................
 
 
THE CYRIL E. KING AP/ST THOMAS CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 85 90 1994  
MINIMUM TEMPERATURE (F) 73 65 1972  
 
SUNRISE AND SUNSET  
DECEMBER 31 2020......SUNRISE 6:52 AM AST SUNSET 5:55 PM AST  
JANUARY 1 2021.......SUNRISE 6:52 AM AST SUNSET 5:55 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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