513  
CDCA42 TJSJ 170418  
CLIIST  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
1218 AM AST FRI SEP 17 2021  
   
...............................
 
 
...THE CYRIL E. KING AP/ST THOMAS CLIMATE SUMMARY FOR SEPTEMBER 16 2021...  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1953 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 87 3:42 PM 95 1992 89 -2 92  
MINIMUM 78 6:43 AM 66 1972 80 -2 82  
AVERAGE 83 84 -1 87  
 
PRECIPITATION (IN)  
YESTERDAY 0.05 4.93 2004 0.19 -0.14 0.00  
MONTH TO DATE 2.32 3.07 -0.75 3.07  
SINCE SEP 1 2.32 3.07 -0.75 3.07  
SINCE JAN 1 21.46 24.36 -2.90 19.62  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE SEP 1 0 0 0 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY 18 19 -1 22  
MONTH TO DATE 289 315 -26 335  
SINCE SEP 1 289 315 -26 335  
SINCE JAN 1 4540 4366 174 4587    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION E (100)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION E (100)  
AVERAGE WIND SPEED 8.6  
 
SKY COVER  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90  
LOWEST 63  
AVERAGE 77  
   
......................................................
 
 
THE CYRIL E. KING AP/ST THOMAS CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 89 95 1991  
MINIMUM TEMPERATURE (F) 80 64 1972  
 
SUNRISE AND SUNSET  
SEPTEMBER 17 2021.....SUNRISE 6:08 AM AST SUNSET 6:20 PM AST  
SEPTEMBER 18 2021.....SUNRISE 6:08 AM AST SUNSET 6:19 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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