881  
CDCA42 TJSJ 190034  
CLISJU  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
834 PM AST TUE MAY 18 2021  
   
...............................
 
 
   
..THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR MAY 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 94R 2:00 PM 94 1903 87 7 91  
MINIMUM 76 5:50 AM 67 1957 76 0 77  
AVERAGE 85 82 3 84  
 
PRECIPITATION (IN)  
TODAY 0.00 3.14 1904 0.18 -0.18 0.00  
MONTH TO DATE 0.82 3.22 -2.40 1.15  
SINCE MAR 1 5.07 10.00 -4.93 10.37  
SINCE JAN 1 10.17 16.65 -6.48 27.68  
 
DEGREE DAYS  
HEATING  
TODAY 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  
TODAY 20 17 3 19  
MONTH TO DATE 304 290 14 339  
SINCE MAR 1 1216 1163 53 1240  
SINCE JAN 1 2017 1910 107 2129    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION E (70)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NE (60)  
AVERAGE WIND SPEED 5.6  
 
SKY COVER  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 82  
LOWEST 41  
AVERAGE 62  
   
......................................................
 
 
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 94 1989  
MINIMUM TEMPERATURE (F) 76 69 1940  
 
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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