094  
CDUS41 KOKX 140617  
CLIISP  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE NEW YORK, NY  
217 AM EDT THU AUG 14 2025  
   
...............................
 
 
   
..THE ISLIP NY CLIMATE SUMMARY FOR AUGUST 13 2025
 
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1963 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 86 1119 AM 93 2016 82 4 81  
MINIMUM 74 503 AM 54 2006 67 7 61  
AVERAGE 80 74 6 71  
 
PRECIPITATION (IN)  
YESTERDAY 0.11 13.51 2014 0.14 -0.03 0.00  
MONTH TO DATE 0.15 1.84 -1.69 4.43  
SINCE JUN 1 7.67 9.10 -1.43 9.42  
SINCE JAN 1 23.40 27.90 -4.50 36.80  
 
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 JUN 1 0.0 0.0 0.0 0.0  
SINCE JUL 1 0.0 0.0 0.0 0.0  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 18 31 -13 0  
SINCE JUL 1 0 1 -1 0  
 
COOLING  
YESTERDAY 15 9 6 6  
MONTH TO DATE 116 127 -11 145  
SINCE JUN 1 785 591 194 741  
SINCE JAN 1 797 620 177 783    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 8.7  
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 94 100 AM  
LOWEST 69 400 PM  
AVERAGE 82  
   
......................................................
 
 
THE ISLIP NY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 82 97 2016  
MINIMUM TEMPERATURE (F) 66 50 1964  
 
SUNRISE AND SUNSET  
AUGUST 14 2025........SUNRISE 602 AM EDT SUNSET 751 PM EDT  
AUGUST 15 2025........SUNRISE 603 AM EDT SUNSET 750 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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