202  
CDUS41 KOKX 180621  
CLIISP  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE NEW YORK, NY  
221 AM EDT WED SEP 18 2024  
   
...............................
 
 
   
..THE ISLIP NY CLIMATE SUMMARY FOR SEPTEMBER 17 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 79 150 PM 87 1991 75 4 74  
MINIMUM 62 1202 AM 45 1986 59 3 50  
AVERAGE 71 67 4 62  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.85 1996 0.13 -0.13 T  
MONTH TO DATE 0.06 1.98 -1.92 1.47  
SINCE SEP 1 0.06 1.98 -1.92 1.47  
SINCE JAN 1 38.93 32.28 6.65 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 3  
MONTH TO DATE 5 12 -7 3  
SINCE SEP 1 5 12 -7 3  
SINCE JUL 1 6 15 -9 3  
 
COOLING  
YESTERDAY 6 3 3 0  
MONTH TO DATE 46 81 -35 157  
SINCE SEP 1 46 81 -35 157  
SINCE JAN 1 967 845 122 935    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SE (150)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION S (160)  
AVERAGE WIND SPEED 5.0  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 100 AM  
LOWEST 54 500 PM  
AVERAGE 76  
   
......................................................
 
 
THE ISLIP NY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 74 85 1965  
MINIMUM TEMPERATURE (F) 58 43 1986  
1990  
 
SUNRISE AND SUNSET  
SEPTEMBER 18 2024.....SUNRISE 636 AM EDT SUNSET 655 PM EDT  
SEPTEMBER 19 2024.....SUNRISE 637 AM EDT SUNSET 654 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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