059  
CDUS41 KOKX 312135  
CLIISP  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE NEW YORK, NY  
435 PM EST SUN DEC 31 2023  
   
...............................
 
 
   
..THE ISLIP NY CLIMATE SUMMARY FOR DECEMBER 31 2023
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 42 359 PM 59 1965 41 1 53  
1992  
MINIMUM 34 247 AM -1 1963 27 7 38  
AVERAGE 38 34 4 46  
 
PRECIPITATION (IN)  
TODAY 0.00 1.26 2018 0.14 -0.14 0.49  
MONTH TO DATE 8.56 4.71 3.85 4.42  
SINCE DEC 1 8.56 4.71 3.85 4.42  
SINCE JAN 1 50.19 45.99 4.20 39.61  
 
SNOWFALL (IN)  
TODAY 0.0 2.0 1967 0.2 -0.2 0.0  
MONTH TO DATE T 4.5 -4.5 0.4  
SINCE DEC 1 T 4.5 -4.5 0.4  
SINCE JUL 1 T 5.0 -5.0 0.4  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 27 31 -4 19  
MONTH TO DATE 698 864 -166 867  
SINCE DEC 1 698 864 -166 867  
SINCE JUL 1 1587 1803 -216 1659  
 
COOLING  
TODAY 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 18 HIGHEST WIND DIRECTION NW (300)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 8.3  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 70 300 AM  
LOWEST 50 300 PM  
AVERAGE 60  
   
......................................................
 
 
THE ISLIP NY CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 41 63 1966  
MINIMUM TEMPERATURE (F) 27 6 2018  
 
SUNRISE AND SUNSET  
DECEMBER 31 2023......SUNRISE 716 AM EST SUNSET 434 PM EST  
JANUARY 1 2024.......SUNRISE 717 AM EST SUNSET 435 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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