738  
CDCA42 TJSJ 202127  
CLISJU  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
527 PM AST MON SEP 20 2021  
   
...............................
 
 
   
..THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR SEPTEMBER 20 2021
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 88 3:26 PM 95 1981 89 -1 90  
MINIMUM 78 5:04 AM 72 1920 77 1 78  
AVERAGE 83 83 0 84  
 
PRECIPITATION (IN)  
TODAY 0.37 7.11 2017 0.21 0.16 0.03  
MONTH TO DATE 3.44 4.54 -1.10 2.96  
SINCE SEP 1 3.44 4.54 -1.10 2.96  
SINCE JAN 1 35.37 40.48 -5.11 48.99  
 
DEGREE DAYS  
HEATING  
TODAY 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  
TODAY 18 18 0 19  
MONTH TO DATE 401 360 41 387  
SINCE SEP 1 401 360 41 387  
SINCE JAN 1 4350 4171 179 4591    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION SE (120)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION E (100)  
AVERAGE WIND SPEED 4.9  
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
THUNDERSTORM  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 88  
LOWEST 65  
AVERAGE 77  
   
......................................................
 
 
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 89 95 2019  
MINIMUM TEMPERATURE (F) 77 71 1960  
 
SUNRISE AND SUNSET  
SEPTEMBER 20 2021.....SUNRISE 6:13 AM AST SUNSET 6:22 PM AST  
SEPTEMBER 21 2021.....SUNRISE 6:13 AM AST SUNSET 6:21 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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