149  
CDCA42 TJSJ 100430  
CLISJU  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
1230 AM AST FRI SEP 10 2021  
   
...............................
 
 
   
..THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR SEPTEMBER 9 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 94R 12:39 PM 94 2013 89 5 90  
MINIMUM 80 6:22 AM 70 1988 78 2 78  
AVERAGE 87 83 4 84  
 
PRECIPITATION (IN)  
YESTERDAY 0.18 1.82 1988 0.23 -0.05 T  
MONTH TO DATE 0.45 2.12 -1.67 2.57  
SINCE SEP 1 0.45 2.12 -1.67 2.57  
SINCE JAN 1 32.38 38.06 -5.68 48.60  
 
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 22 18 4 19  
MONTH TO DATE 191 162 29 170  
SINCE SEP 1 191 162 29 170  
SINCE JAN 1 4140 3973 167 4374    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NE (60)  
AVERAGE WIND SPEED 5.7  
 
SKY COVER  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
RAIN  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 85  
LOWEST 54  
AVERAGE 70  
   
......................................................
 
 
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 89 94 1998  
2017  
MINIMUM TEMPERATURE (F) 78 71 1961  
 
SUNRISE AND SUNSET  
SEPTEMBER 10 2021.....SUNRISE 6:11 AM AST SUNSET 6:30 PM AST  
SEPTEMBER 11 2021.....SUNRISE 6:11 AM AST SUNSET 6:30 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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