160  
CDCA42 TJSJ 010502  
CLISJU  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
1230 AM AST SUN AUG 01 2021  
   
...............................
 
 
   
..THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR JULY 31 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 MM 94 1980 89 0 91  
MINIMUM 79 MM 71 1927 78 1 79  
AVERAGE 84 83 1 85  
 
PRECIPITATION (IN)  
YESTERDAY T 1.87 1937 0.19 -0.19 0.02  
MONTH TO DATE 5.31 6.02 -0.71 10.42  
SINCE JUN 1 15.80 10.68 5.12 14.32  
SINCE JAN 1 29.26 29.65 -0.39 42.54  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 0 0 0 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY 19 18 1 20  
MONTH TO DATE 580 563 17 607  
SINCE JUN 1 1098 1106 -8 1201  
SINCE JAN 1 3347 3239 108 3591    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION E (90)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION NE (60)  
AVERAGE WIND SPEED 12.4  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 94  
LOWEST 68  
AVERAGE 81  
   
......................................................
 
 
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 89 93 1980  
MINIMUM TEMPERATURE (F) 78 70 1904  
 
SUNRISE AND SUNSET  
AUGUST 1 2021........SUNRISE 6:02 AM AST SUNSET 6:59 PM AST  
AUGUST 2 2021........SUNRISE 6:02 AM AST SUNSET 6:58 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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