443  
CDUS41 KOKX 180622  
CLIISP  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE NEW YORK NY  
221 AM EDT FRI SEP 18 2020  
 
   
...............................
 
 
   
..THE ISLIP NY CLIMATE SUMMARY FOR SEPTEMBER 17 2020
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1963 TO 2020  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 76 1139 AM 87 1991 74 2 75  
MINIMUM 60 233 AM 45 1986 57 3 53  
AVERAGE 68 65 3 64  
 
PRECIPITATION (IN)  
YESTERDAY 0.19 2.85 1996 0.12 0.07 0.00  
MONTH TO DATE 3.36 1.98 1.38 0.33  
SINCE SEP 1 3.36 1.98 1.38 0.33  
SINCE JAN 1 28.88 33.12 -4.24 32.71  
 
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 OCT 1 6.8 24.8 -18.0 12.8  
SINCE JUL 1 T 0.0 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 2 -2 1  
MONTH TO DATE 11 20 -9 5  
SINCE SEP 1 11 20 -9 5  
SINCE JUL 1 11 25 -14 7  
 
COOLING  
YESTERDAY 3 3 0 0  
MONTH TO DATE 97 72 25 62  
SINCE SEP 1 97 72 25 62  
SINCE JAN 1 1027 758 269 936    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION W (250)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION W (250)  
AVERAGE WIND SPEED 5.0  
 
 
SKY COVER  
AVERAGE SKY COVER 0.9  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 500 AM  
LOWEST 64 1000 AM  
AVERAGE 82  
   
......................................................
 
 
 
THE ISLIP NY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 73 85 1965  
MINIMUM TEMPERATURE (F) 57 43 1990  
1986  
 
 
SUNRISE AND SUNSET  
SEPTEMBER 18 2020.....SUNRISE 636 AM EDT SUNSET 655 PM EDT  
SEPTEMBER 19 2020.....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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