771  
CDCA42 TJSJ 100452  
CLISJU  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
1252 AM AST SUN JAN 10 2021  
   
...............................
 
 
   
..THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR JANUARY 9 2021
 
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
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 83 1:34 PM 90 1958 83 0 86  
MINIMUM 72 7:37 AM 62 1960 72 0 76  
AVERAGE 78 78 0 81  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.94 1930 0.14 -0.14 0.34  
MONTH TO DATE 0.37 1.29 -0.92 1.91  
SINCE DEC 1 5.05 6.31 -1.26 7.69  
SINCE JAN 1 0.37 1.29 -0.92 1.91  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY 13 13 0 16  
MONTH TO DATE 108 117 -9 137  
SINCE DEC 1 549 540 9 656  
SINCE JAN 1 108 117 -9 137    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION E (80)  
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION E (80)  
AVERAGE WIND SPEED 5.3  
 
SKY COVER  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87  
LOWEST 67  
AVERAGE 77  
   
......................................................
 
 
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 83 88 2003  
MINIMUM TEMPERATURE (F) 72 63 1917  
 
SUNRISE AND SUNSET  
JANUARY 10 2021.......SUNRISE 6:59 AM AST SUNSET 6:05 PM AST  
JANUARY 11 2021.......SUNRISE 6:59 AM AST SUNSET 6:06 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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