800  
CDCA42 TJSJ 212135  
CLIIST  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
535 PM AST THU DEC 21 2023  
   
...............................
 
 
...THE CYRIL E. KING AP/ST THOMAS CLIMATE SUMMARY FOR DECEMBER 21 2023...  
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1953 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 84 1:10 PM 91 1994 85 -1 85  
MINIMUM 77 6:44 AM 64 1954 75 2 75  
AVERAGE 81 80 1 80  
 
PRECIPITATION (IN)  
TODAY 0.00 0.69 1978 0.08 -0.08 T  
MONTH TO DATE 3.50 2.11 1.39 0.35  
SINCE DEC 1 3.50 2.11 1.39 0.35  
SINCE JAN 1 28.40 40.63 -12.23 40.74  
 
DEGREE DAYS  
HEATING  
TODAY 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  
TODAY 16 15 1 15  
MONTH TO DATE 337 323 14 315  
SINCE DEC 1 337 323 14 315  
SINCE JAN 1 6254 6021 233 5877    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION N (20)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION N (20)  
AVERAGE WIND SPEED 8.0  
 
SKY COVER  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 79  
LOWEST 70  
AVERAGE 75  
   
......................................................
 
 
THE CYRIL E. KING AP/ST THOMAS CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 85 91 1994  
MINIMUM TEMPERATURE (F) 75 65 1972  
 
SUNRISE AND SUNSET  
DECEMBER 21 2023......SUNRISE 6:47 AM AST SUNSET 5:49 PM AST  
DECEMBER 22 2023......SUNRISE 6:47 AM AST SUNSET 5:49 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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