839  
CDCA42 TJSJ 190440  
CLIIST  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
1240 AM AST SUN SEP 19 2021  
   
...............................
 
 
...THE CYRIL E. KING AP/ST THOMAS CLIMATE SUMMARY FOR SEPTEMBER 18 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 88 1:04 PM 96 1994 89 -1 91  
MINIMUM 75 5:09 AM 71 1972 80 -5 82  
AVERAGE 82 84 -2 87  
 
PRECIPITATION (IN)  
YESTERDAY 0.05 2.14 1960 0.18 -0.13 0.00  
MONTH TO DATE 2.85 3.45 -0.60 3.12  
SINCE SEP 1 2.85 3.45 -0.60 3.12  
SINCE JAN 1 21.99 24.74 -2.75 19.67  
 
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 17 19 -2 22  
MONTH TO DATE 323 353 -30 378  
SINCE SEP 1 323 353 -30 378  
SINCE JAN 1 4574 4404 170 4630    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION E (70)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION E (70)  
AVERAGE WIND SPEED 6.9  
 
SKY COVER  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 85  
LOWEST 59  
AVERAGE 72  
   
......................................................
 
 
THE CYRIL E. KING AP/ST THOMAS CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 89 95 1994  
MINIMUM TEMPERATURE (F) 79 72 1974  
 
SUNRISE AND SUNSET  
SEPTEMBER 19 2021.....SUNRISE 6:08 AM AST SUNSET 6:18 PM AST  
SEPTEMBER 20 2021.....SUNRISE 6:08 AM AST SUNSET 6:18 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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