483  
CDCA42 TJSJ 210426  
CLISJU  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN JUAN PR  
1226 AM AST FRI MAY 21 2021  
   
...............................
 
 
   
..THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR MAY 20 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 2:43 PM 92 1999 88 3 89  
MINIMUM 78 10:59 PM 68 1957 76 2 78  
AVERAGE 85 82 3 84  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 3.54 1987 0.18 -0.18 0.06  
MONTH TO DATE 0.82 3.58 -2.76 1.23  
SINCE MAR 1 5.07 10.36 -5.29 10.45  
SINCE JAN 1 10.17 17.01 -6.84 27.76  
 
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 20 17 3 19  
MONTH TO DATE 345 324 21 377  
SINCE MAR 1 1257 1197 60 1278  
SINCE JAN 1 2058 1944 114 2167    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION E (70)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION E (70)  
AVERAGE WIND SPEED 9.0  
 
SKY COVER  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 82  
LOWEST 57  
AVERAGE 70  
   
......................................................
 
 
THE SAN JUAN AREA/PR CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 95 2005  
MINIMUM TEMPERATURE (F) 76 69 2011  
 
SUNRISE AND SUNSET  
MAY 21 2021...........SUNRISE 5:49 AM AST SUNSET 6:53 PM AST  
MAY 22 2021...........SUNRISE 5:48 AM AST SUNSET 6:53 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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