899  
CDCA42 TJSJ 210436  
CLISJU  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
1236 AM AST THU OCT 21 2021  
   
...............................
 
 
   
..THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR OCTOBER 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 90 11:50 AM 95 1980 89 1 89  
MINIMUM 78 10:04 PM 67 1959 77 1 78  
AVERAGE 84 82 2 84  
 
PRECIPITATION (IN)  
YESTERDAY 1.57 2.38 1942 0.17 1.40 0.00  
MONTH TO DATE 5.12 3.08 2.04 3.69  
SINCE SEP 1 9.60 9.58 0.02 8.72  
SINCE JAN 1 41.54 45.52 -3.98 54.75  
 
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 19  
MONTH TO DATE 389 360 29 363  
SINCE SEP 1 993 910 83 946  
SINCE JAN 1 4942 4721 221 5150    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION E (70)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION NE (60)  
AVERAGE WIND SPEED 3.8  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90  
LOWEST 65  
AVERAGE 78  
   
......................................................
 
 
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 94 2016  
MINIMUM TEMPERATURE (F) 77 68 1959  
 
SUNRISE AND SUNSET  
OCTOBER 21 2021.......SUNRISE 6:20 AM AST SUNSET 5:57 PM AST  
OCTOBER 22 2021.......SUNRISE 6:20 AM AST SUNSET 5:57 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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