256  
CDCA42 TJSJ 220438  
CLISJU  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
1238 AM AST WED SEP 22 2021  
   
...............................
 
 
   
..THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR SEPTEMBER 21 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 87 3:25 PM 95 2019 89 -2 90  
MINIMUM 79 11:59 PM 71 1960 77 2 78  
AVERAGE 83 83 0 84  
 
PRECIPITATION (IN)  
YESTERDAY 0.61 4.04 1998 0.21 0.40 T  
MONTH TO DATE 4.37 4.75 -0.38 2.96  
SINCE SEP 1 4.37 4.75 -0.38 2.96  
SINCE JAN 1 36.30 40.69 -4.39 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 419 378 41 406  
SINCE SEP 1 419 378 41 406  
SINCE JAN 1 4368 4189 179 4610    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION SW (220)  
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION N (360)  
AVERAGE WIND SPEED 4.5  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 94  
LOWEST 72  
AVERAGE 83  
   
......................................................
 
 
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 89 95 2020  
MINIMUM TEMPERATURE (F) 77 71 1947  
 
SUNRISE AND SUNSET  
SEPTEMBER 22 2021.....SUNRISE 6:13 AM AST SUNSET 6:20 PM AST  
SEPTEMBER 23 2021.....SUNRISE 6:13 AM AST SUNSET 6:19 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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