258  
CDCA42 TJSJ 010438  
CLISJU  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
1238 AM AST FRI OCT 01 2021  
   
...............................
 
 
   
..THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR SEPTEMBER 30 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 89 3:33 PM 94 2014 89 0 91  
MINIMUM 79 6:48 AM 71 1938 77 2 80  
AVERAGE 84 83 1 86  
 
PRECIPITATION (IN)  
YESTERDAY 0.07 2.30 1899 0.19 -0.12 0.01  
MONTH TO DATE 4.48 6.50 -2.02 5.03  
SINCE SEP 1 4.48 6.50 -2.02 5.03  
SINCE JAN 1 36.41 42.44 -6.03 51.06  
 
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 19 18 1 21  
MONTH TO DATE 604 550 54 583  
SINCE SEP 1 604 550 54 583  
SINCE JAN 1 4553 4361 192 4787    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION N (20)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION N (10)  
AVERAGE WIND SPEED 4.5  
 
SKY COVER  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 85  
LOWEST 61  
AVERAGE 73  
   
......................................................
 
 
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 89 96 1982  
MINIMUM TEMPERATURE (F) 77 68 1899  
 
SUNRISE AND SUNSET  
OCTOBER 1 2021.......SUNRISE 6:15 AM AST SUNSET 6:12 PM AST  
OCTOBER 2 2021.......SUNRISE 6:15 AM AST SUNSET 6:11 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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