845  
CDCA42 TJSJ 170425  
CLISJU  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
1225 AM AST MON MAY 17 2021  
   
...............................
 
 
   
..THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR MAY 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 92 3:32 PM 94 1903 87 5 90  
MINIMUM 76 4:16 AM 68 1961 76 0 77  
AVERAGE 84 82 2 84  
 
PRECIPITATION (IN)  
YESTERDAY T 2.20 1928 0.18 -0.18 0.02  
MONTH TO DATE 0.82 2.87 -2.05 1.15  
SINCE MAR 1 5.07 9.65 -4.58 10.37  
SINCE JAN 1 10.17 16.30 -6.13 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 19 16 3 19  
MONTH TO DATE 266 256 10 300  
SINCE MAR 1 1178 1129 49 1201  
SINCE JAN 1 1979 1876 103 2090    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION SE (140)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION N (350)  
AVERAGE WIND SPEED 4.9  
 
SKY COVER  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 84  
LOWEST 45  
AVERAGE 65  
   
......................................................
 
 
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 94 1903  
MINIMUM TEMPERATURE (F) 76 69 1960  
 
SUNRISE AND SUNSET  
MAY 17 2021...........SUNRISE 5:50 AM AST SUNSET 6:51 PM AST  
MAY 18 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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