878  
CDCA42 TJSJ 310438  
CLISJU  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
1238 AM AST SAT JUL 31 2021  
   
...............................
 
 
   
..THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR JULY 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 88 MM 94 1990 89 -1 85  
MINIMUM 78 MM 71 1919 78 0 76  
AVERAGE 83 83 0 81  
 
PRECIPITATION (IN)  
YESTERDAY 0.38 4.46 2020 0.20 0.18 4.46  
MONTH TO DATE 5.31 5.83 -0.52 10.40  
SINCE JUN 1 15.80 10.49 5.31 14.30  
SINCE JAN 1 29.26 29.46 -0.20 42.52  
 
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 18 18 0 16  
MONTH TO DATE 561 540 21 587  
SINCE JUN 1 1079 1083 -4 1181  
SINCE JAN 1 3328 3216 112 3571    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION E (70)  
AVERAGE WIND SPEED 11.9  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
LIGHT RAIN  
FOG  
 
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 94 1980  
MINIMUM TEMPERATURE (F) 78 71 1927  
 
SUNRISE AND SUNSET  
JULY 31 2021..........SUNRISE 6:02 AM AST SUNSET 6:59 PM AST  
AUGUST 1 2021........SUNRISE 6:02 AM AST SUNSET 6:59 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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