000  
CDCA42 TJSJ 210432  
CLISJU  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
1232 AM AST TUE SEP 21 2021  
   
...............................
 
 
   
..THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR SEPTEMBER 20 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 3:26 PM 95 1981 89 -1 90  
MINIMUM 78 5:04 AM 72 1920 77 1 78  
AVERAGE 83 83 0 84  
 
PRECIPITATION (IN)  
YESTERDAY 0.69 7.11 2017 0.21 0.48 0.03  
MONTH TO DATE 3.76 4.54 -0.78 2.96  
SINCE SEP 1 3.76 4.54 -0.78 2.96  
SINCE JAN 1 35.69 40.48 -4.79 48.99  
 
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 18 18 0 19  
MONTH TO DATE 401 360 41 387  
SINCE SEP 1 401 360 41 387  
SINCE JAN 1 4350 4171 179 4591    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION E (70)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION NE (60)  
AVERAGE WIND SPEED 5.0  
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 88  
LOWEST 65  
AVERAGE 77  
   
......................................................
 
 
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 89 95 2019  
MINIMUM TEMPERATURE (F) 77 71 1960  
 
SUNRISE AND SUNSET  
SEPTEMBER 21 2021.....SUNRISE 6:13 AM AST SUNSET 6:21 PM AST  
SEPTEMBER 22 2021.....SUNRISE 6:13 AM AST SUNSET 6:20 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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