664  
CDCA42 TJSJ 270425  
CLISJU  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
1225 AM AST MON SEP 27 2021  
   
...............................
 
 
   
..THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR SEPTEMBER 26 2021
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1898 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 90 3:19 PM 96 1987 89 1 89  
MINIMUM 80 6:53 AM 71 1997 77 3 79  
AVERAGE 85 83 2 84  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.41 1908 0.20 -0.20 0.18  
MONTH TO DATE 4.39 5.72 -1.33 4.03  
SINCE SEP 1 4.39 5.72 -1.33 4.03  
SINCE JAN 1 36.32 41.66 -5.34 50.06  
 
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 20 18 2 19  
MONTH TO DATE 525 468 57 506  
SINCE SEP 1 525 468 57 506  
SINCE JAN 1 4474 4279 195 4710    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION E (70)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION E (80)  
AVERAGE WIND SPEED 6.9  
 
SKY COVER  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 82  
LOWEST 65  
AVERAGE 74  
   
......................................................
 
 
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 89 94 2015  
MINIMUM TEMPERATURE (F) 77 70 1949  
 
SUNRISE AND SUNSET  
SEPTEMBER 27 2021.....SUNRISE 6:14 AM AST SUNSET 6:16 PM AST  
SEPTEMBER 28 2021.....SUNRISE 6:14 AM AST SUNSET 6:15 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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