272  
CDUS41 KOKX 140617  
CLIISP  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE NEW YORK, NY  
217 AM EDT WED APR 14 2021  
   
...............................
 
 
   
..THE ISLIP NY CLIMATE SUMMARY FOR APRIL 13 2021
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1963 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 64 359 PM 82 1977 57 7 60  
MINIMUM 42 419 AM 27 1990 40 2 52  
AVERAGE 53 48 5 56  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 3.69 2004 0.15 -0.15 1.39  
MONTH TO DATE 0.87 1.98 -1.11 2.19  
SINCE MAR 1 4.79 6.42 -1.63 6.39  
SINCE JAN 1 10.86 13.32 -2.46 11.96  
 
SNOWFALL (IN)  
YESTERDAY 0.0 MM MM 0.0 0.0 0.0  
MONTH TO DATE T 0.4 -0.4 0.0  
SINCE MAR 1 T 4.9 -4.9 T  
SINCE JUL 1 33.5 24.6 8.9 6.8  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 12 17 -5 9  
MONTH TO DATE 202 243 -41 208  
SINCE MAR 1 894 1040 -146 829  
SINCE JUL 1 4414 4935 -521 4259  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE MAR 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION SE (120)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION SE (120)  
AVERAGE WIND SPEED 9.4  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 1200 AM  
LOWEST 44 400 PM  
AVERAGE 69  
   
......................................................
 
 
THE ISLIP NY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 57 73 1977  
2002  
MINIMUM TEMPERATURE (F) 40 28 1975  
2000  
 
SUNRISE AND SUNSET  
APRIL 14 2021.........SUNRISE 615 AM EDT SUNSET 731 PM EDT  
APRIL 15 2021.........SUNRISE 613 AM EDT SUNSET 732 PM EDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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