665  
CDCA42 TJSJ 290428  
CLISJU  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
1228 AM AST WED SEP 29 2021  
   
...............................
 
 
   
..THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR SEPTEMBER 28 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 12:07 PM 95 2013 89 1 87  
MINIMUM 79 6:34 AM 69 1920 77 2 77  
AVERAGE 85 83 2 82  
 
PRECIPITATION (IN)  
YESTERDAY 0.02 1.65 1920 0.20 -0.18 0.65  
MONTH TO DATE 4.41 6.12 -1.71 4.73  
SINCE SEP 1 4.41 6.12 -1.71 4.73  
SINCE JAN 1 36.34 42.06 -5.72 50.76  
 
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 17  
MONTH TO DATE 565 504 61 543  
SINCE SEP 1 565 504 61 543  
SINCE JAN 1 4514 4315 199 4747    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NE (50)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION E (70)  
AVERAGE WIND SPEED 5.9  
 
SKY COVER  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 82  
LOWEST 63  
AVERAGE 73  
   
......................................................
 
 
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 89 96 2013  
MINIMUM TEMPERATURE (F) 77 70 1905  
 
SUNRISE AND SUNSET  
SEPTEMBER 29 2021.....SUNRISE 6:14 AM AST SUNSET 6:14 PM AST  
SEPTEMBER 30 2021.....SUNRISE 6:14 AM AST SUNSET 6:13 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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