354  
CDCA42 TJSJ 180434  
CLISJU  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
1234 AM AST MON OCT 18 2021  
   
...............................
 
 
   
..THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR OCTOBER 17 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 10:17 AM 95 1980 89 1 89  
MINIMUM 79 6:48 AM 69 1908 77 2 76  
AVERAGE 85 83 2 83  
 
PRECIPITATION (IN)  
YESTERDAY MM 2.53 1958 0.16 MM 0.01  
MONTH TO DATE 3.10 2.59 0.51 3.69  
SINCE SEP 1 7.58 9.09 -1.51 8.72  
SINCE JAN 1 39.52 45.03 -5.51 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 20 18 2 18  
MONTH TO DATE 331 306 25 308  
SINCE SEP 1 935 856 79 891  
SINCE JAN 1 4884 4667 217 5095    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION N (20)  
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION N (20)  
AVERAGE WIND SPEED 2.6  
 
SKY COVER  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 88  
LOWEST 66  
AVERAGE 77  
   
......................................................
 
 
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 89 94 1979  
MINIMUM TEMPERATURE (F) 77 70 1957  
 
SUNRISE AND SUNSET  
OCTOBER 18 2021.......SUNRISE 6:19 AM AST SUNSET 5:59 PM AST  
OCTOBER 19 2021.......SUNRISE 6:19 AM AST SUNSET 5:59 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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