506  
CDCA42 TJSJ 212127  
CLISJU  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
527 PM AST TUE SEP 21 2021  
   
...............................
 
 
   
..THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR SEPTEMBER 21 2021
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 87 3:25 PM 95 2019 89 -2 90  
MINIMUM 80 7:08 AM 71 1960 77 3 78  
AVERAGE 84 83 1 84  
 
PRECIPITATION (IN)  
TODAY 0.09 4.04 1998 0.21 -0.12 T  
MONTH TO DATE 3.85 4.75 -0.90 2.96  
SINCE SEP 1 3.85 4.75 -0.90 2.96  
SINCE JAN 1 35.78 40.69 -4.91 48.99  
 
DEGREE DAYS  
HEATING  
TODAY 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  
TODAY 19 18 1 19  
MONTH TO DATE 420 378 42 406  
SINCE SEP 1 420 378 42 406  
SINCE JAN 1 4369 4189 180 4610    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION NE (40)  
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION N (360)  
AVERAGE WIND SPEED 4.7  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
THUNDERSTORM  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 91  
LOWEST 72  
AVERAGE 82  
   
......................................................
 
 
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 89 95 2020  
MINIMUM TEMPERATURE (F) 77 71 1947  
 
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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