328  
CDCA42 TJSJ 182139  
CLISJU  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
539 PM AST WED AUG 18 2021  
   
...............................
 
 
   
..THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR AUGUST 18 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 89 MM 94 1991 89 0 91  
MINIMUM 80 MM 72 1956 78 2 82  
AVERAGE 85 84 1 87  
 
PRECIPITATION (IN)  
TODAY 0.08 1.80 1967 0.21 -0.13 0.01  
MONTH TO DATE 2.31 3.45 -1.14 1.25  
SINCE JUN 1 18.11 14.13 3.98 15.57  
SINCE JAN 1 31.57 33.10 -1.53 43.79  
 
DEGREE DAYS  
HEATING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 0 0 0 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
TODAY 20 18 2 22  
MONTH TO DATE 337 324 13 364  
SINCE JUN 1 1435 1430 5 1565  
SINCE JAN 1 3684 3563 121 3955    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM  
AVERAGE WIND SPEED 11.3  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87  
LOWEST 63  
AVERAGE 75  
   
......................................................
 
 
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 89 93 1991  
2020  
MINIMUM TEMPERATURE (F) 78 73 1956  
 
SUNRISE AND SUNSET  
AUGUST 18 2021........SUNRISE 6:07 AM AST SUNSET 6:49 PM AST  
AUGUST 19 2021........SUNRISE 6:07 AM AST SUNSET 6:48 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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