251  
CDUS41 KOKX 140618  
CLIISP  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE NEW YORK NY  
117 AM EST THU DEC 14 2017  
 
   
...............................
 
 
   
..THE ISLIP NY CLIMATE SUMMARY FOR DECEMBER 13 2017
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1963 TO 2017  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 32 1230 AM 68 2015 44 -12 44  
MINIMUM 21 741 AM 5 1982 29 -8 32  
AVERAGE 27 36 -9 38  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.53 1988 0.13 -0.13 0.00  
MONTH TO DATE 0.87 1.81 -0.94 1.39  
SINCE DEC 1 0.87 1.81 -0.94 1.39  
SINCE JAN 1 42.19 43.99 -1.80 32.85  
 
SNOWFALL (IN)  
YESTERDAY 0.0 9.2 1988 0.1 -0.1 0.0  
MONTH TO DATE 1.3 1.5 -0.2 0.1  
SINCE OCT 1 1.3 2.0 -0.7 0.1  
SINCE JUL 1 1.3 2.0 -0.7 0.1  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 38 29 9 27  
MONTH TO DATE 325 347 -22 341  
SINCE DEC 1 325 347 -22 341  
SINCE JUL 1 1076 1363 -287 1132  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 972 787 185 1124    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 35 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 45 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 18.1  
 
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 56 1200 AM  
LOWEST 31 400 PM  
AVERAGE 44  
   
......................................................
 
 
 
THE ISLIP NY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 43 62 2015  
MINIMUM TEMPERATURE (F) 29 5 1982  
 
 
SUNRISE AND SUNSET  
DECEMBER 14 2017......SUNRISE 709 AM EST SUNSET 425 PM EST  
DECEMBER 15 2017......SUNRISE 710 AM EST SUNSET 426 PM EST  
 
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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