499  
CDCA42 TJSJ 170437  
CLISJU  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
1237 AM AST SUN OCT 17 2021  
   
...............................
 
 
   
..THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR OCTOBER 16 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 89 1:34 PM 94 1994 89 0 87  
MINIMUM 78 6:07 AM 71 1964 77 1 77  
AVERAGE 84 83 1 82  
 
PRECIPITATION (IN)  
YESTERDAY T 1.93 2017 0.15 -0.15 0.07  
MONTH TO DATE 3.10 2.43 0.67 3.68  
SINCE SEP 1 7.58 8.93 -1.35 8.71  
SINCE JAN 1 39.52 44.87 -5.35 54.74  
 
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 17  
MONTH TO DATE 311 288 23 290  
SINCE SEP 1 915 838 77 873  
SINCE JAN 1 4864 4649 215 5077    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION S (170)  
AVERAGE WIND SPEED 2.6  
 
SKY COVER  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
RAIN  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 85  
LOWEST 61  
AVERAGE 73  
   
......................................................
 
 
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 89 95 1980  
MINIMUM TEMPERATURE (F) 77 69 1908  
 
SUNRISE AND SUNSET  
OCTOBER 17 2021.......SUNRISE 6:18 AM AST SUNSET 6:00 PM AST  
OCTOBER 18 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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