568  
CDCA42 TJSJ 180426  
CLISJU  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
1226 AM AST TUE MAY 18 2021  
   
...............................
 
 
   
..THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR MAY 17 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 91 MM 94 1903 87 4 93  
MINIMUM 75 MM 69 1960 76 -1 76  
AVERAGE 83 82 1 85  
 
PRECIPITATION (IN)  
YESTERDAY T 2.92 2010 0.17 -0.17 T  
MONTH TO DATE 0.82 3.04 -2.22 1.15  
SINCE MAR 1 5.07 9.82 -4.75 10.37  
SINCE JAN 1 10.17 16.47 -6.30 27.68  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE MAR 1 0 0 0 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY 18 17 1 20  
MONTH TO DATE 284 273 11 320  
SINCE MAR 1 1196 1146 50 1221  
SINCE JAN 1 1997 1893 104 2110    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION E (70)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NE (60)  
AVERAGE WIND SPEED 7.6  
 
SKY COVER  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 84  
LOWEST 50  
AVERAGE 67  
   
......................................................
 
 
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 94 1903  
MINIMUM TEMPERATURE (F) 76 67 1957  
 
SUNRISE AND SUNSET  
MAY 18 2021...........SUNRISE 5:49 AM AST SUNSET 6:52 PM AST  
MAY 19 2021...........SUNRISE 5:49 AM AST SUNSET 6:52 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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