569  
CDCA42 TJSJ 180426  
CLIIST  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
1226 AM AST TUE MAY 18 2021  
   
...............................
 
 
   
..THE CYRIL E. KING AP/ST THOMAS CLIMATE SUMMARY FOR MAY 17 2021
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1953 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 86 MM 96 1994 87 -1 88  
MINIMUM 79 MM 68 1972 78 1 80  
AVERAGE 83 82 1 84  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.16 2012 0.10 -0.10 T  
MONTH TO DATE 1.83 1.74 0.09 T  
SINCE MAR 1 5.33 5.84 -0.51 3.52  
SINCE JAN 1 7.21 10.38 -3.17 8.47  
 
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 19  
MONTH TO DATE 293 287 6 312  
SINCE MAR 1 1281 1194 87 1235  
SINCE JAN 1 2173 2012 161 2098    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SE (130)  
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM  
AVERAGE WIND SPEED 10.7  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 77  
LOWEST 63  
AVERAGE 70  
   
......................................................
 
 
THE CYRIL E. KING AP/ST THOMAS CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 95 1995  
MINIMUM TEMPERATURE (F) 78 69 1972  
 
SUNRISE AND SUNSET  
MAY 18 2021...........SUNRISE 5:45 AM AST SUNSET 6:47 PM AST  
MAY 19 2021...........SUNRISE 5:45 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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