602  
CDCA42 TJSJ 130456  
CLISJU  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
1256 AM AST MON SEP 13 2021  
   
...............................
 
 
   
..THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR SEPTEMBER 12 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 91 3:55 PM 94 2011 89 2 88  
2017  
MINIMUM 76 6:34 AM 72 1961 78 -2 77  
AVERAGE 84 83 1 83  
 
PRECIPITATION (IN)  
YESTERDAY 0.38 2.90 1905 0.23 0.15 0.09  
MONTH TO DATE 1.96 2.81 -0.85 2.74  
SINCE SEP 1 1.96 2.81 -0.85 2.74  
SINCE JAN 1 33.89 38.75 -4.86 48.77  
 
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 18  
MONTH TO DATE 251 216 35 225  
SINCE SEP 1 251 216 35 225  
SINCE JAN 1 4200 4027 173 4429    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 27 HIGHEST WIND DIRECTION E (80)  
HIGHEST GUST SPEED 37 HIGHEST GUST DIRECTION E (80)  
AVERAGE WIND SPEED 9.8  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 88  
LOWEST 63  
AVERAGE 76  
   
......................................................
 
 
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 89 94 1906  
2017  
2019  
MINIMUM TEMPERATURE (F) 78 70 1928  
 
SUNRISE AND SUNSET  
SEPTEMBER 13 2021.....SUNRISE 6:11 AM AST SUNSET 6:28 PM AST  
SEPTEMBER 14 2021.....SUNRISE 6:12 AM AST SUNSET 6:27 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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