889  
CDUS41 KOKX 150619  
CLIISP  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE NEW YORK, NY  
119 AM EST FRI DEC 15 2023  
   
...............................  
 
   
..THE ISLIP NY CLIMATE SUMMARY FOR DECEMBER 14 2023  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1963 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 39 256 PM 62 2015 45 -6 39  
MINIMUM 25 727 AM 5 1982 30 -5 29  
AVERAGE 32 38 -6 34  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.62 1977 0.15 -0.15 0.00  
MONTH TO DATE 3.67 2.19 1.48 2.42  
SINCE DEC 1 3.67 2.19 1.48 2.42  
SINCE JAN 1 45.30 43.47 1.83 37.61  
 
SNOWFALL (IN)  
YESTERDAY 0.0 4.1 2013 0.1 -0.1 0.0  
MONTH TO DATE T 1.3 -1.3 0.4  
SINCE DEC 1 T 1.3 -1.3 0.4  
SINCE JUL 1 T 1.8 -1.8 0.4  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 33 28 5 31  
MONTH TO DATE 313 362 -49 343  
SINCE DEC 1 313 362 -49 343  
SINCE JUL 1 1202 1301 -99 1135  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 955 885 70 1136    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 7.0  
 
SKY COVER  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 66 800 AM  
LOWEST 39 200 PM  
AVERAGE 53  
   
......................................................  
 
THE ISLIP NY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 45 62 2015  
MINIMUM TEMPERATURE (F) 30 11 1968  
 
SUNRISE AND SUNSET  
DECEMBER 15 2023......SUNRISE 709 AM EST SUNSET 426 PM EST  
DECEMBER 16 2023......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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