829  
CDUS41 KOKX 200622  
CLIISP  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE NEW YORK, NY  
122 AM EST FRI DEC 20 2024  
   
...............................
 
 
   
..THE ISLIP NY CLIMATE SUMMARY FOR DECEMBER 19 2024
 
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1963 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 47 107 PM 55 2017 44 3 45  
MINIMUM 34 1156 PM 9 1989 29 5 33  
AVERAGE 41 36 5 39  
 
PRECIPITATION (IN)  
YESTERDAY 0.10 0.92 1996 0.16 -0.06 0.00  
MONTH TO DATE 4.47 2.97 1.50 5.47  
SINCE DEC 1 4.47 2.97 1.50 5.47  
SINCE JAN 1 47.04 44.25 2.79 47.10  
 
SNOWFALL (IN)  
YESTERDAY 0.0 9.6 2009 0.2 -0.2 0.0  
MONTH TO DATE T 2.1 -2.1 T  
SINCE DEC 1 T 2.1 -2.1 T  
SINCE JUL 1 T 2.6 -2.6 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 24 29 -5 26  
MONTH TO DATE 513 503 10 410  
SINCE DEC 1 513 503 10 410  
SINCE JUL 1 1203 1442 -239 1299  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 1012 885 127 955    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION N (340)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NW (330)  
AVERAGE WIND SPEED 8.5  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 100 AM  
LOWEST 49 200 PM  
AVERAGE 73  
   
......................................................
 
 
THE ISLIP NY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 43 58 1999  
2002  
MINIMUM TEMPERATURE (F) 29 7 1963  
 
SUNRISE AND SUNSET  
DECEMBER 20 2024......SUNRISE 713 AM EST SUNSET 428 PM EST  
DECEMBER 21 2024......SUNRISE 713 AM EST SUNSET 428 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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