667  
CDUS41 KOKX 170620  
CLIISP  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE NEW YORK, NY  
220 AM EDT TUE SEP 17 2024  
   
...............................  
 
   
..THE ISLIP NY CLIMATE SUMMARY FOR SEPTEMBER 16 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 76 300 PM 88 1998 75 1 75  
MINIMUM 54 528 AM 44 1964 59 -5 55  
AVERAGE 65 67 -2 65  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.26 1999 0.13 -0.13 0.00  
MONTH TO DATE 0.06 1.85 -1.79 1.47  
SINCE SEP 1 0.06 1.85 -1.79 1.47  
SINCE JAN 1 38.93 32.15 6.78 32.00  
 
SNOWFALL (IN)  
YESTERDAY 0.0 MM MM 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE SEP 1 0.0 0.0 0.0 0.0  
SINCE JUL 1 0.0 0.0 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 2 -2 0  
MONTH TO DATE 5 10 -5 0  
SINCE SEP 1 5 10 -5 0  
SINCE JUL 1 6 13 -7 0  
 
COOLING  
YESTERDAY 0 3 -3 0  
MONTH TO DATE 40 78 -38 157  
SINCE SEP 1 40 78 -38 157  
SINCE JAN 1 961 842 119 935    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION SE (140)  
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION SE (140)  
AVERAGE WIND SPEED 5.7  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 1000 PM  
LOWEST 54 1200 PM  
AVERAGE 76  
   
......................................................  
 
THE ISLIP NY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 75 87 1991  
MINIMUM TEMPERATURE (F) 59 45 1986  
 
SUNRISE AND SUNSET  
SEPTEMBER 17 2024.....SUNRISE 635 AM EDT SUNSET 657 PM EDT  
SEPTEMBER 18 2024.....SUNRISE 636 AM EDT SUNSET 655 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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