787  
CDUS41 KOKX 280629  
CLIISP  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE NEW YORK, NY  
229 AM EDT THU AUG 28 2025  
   
...............................  
 
   
..THE ISLIP NY CLIMATE SUMMARY FOR AUGUST 27 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 79 344 PM 94 2021 80 -1 85  
MINIMUM 60 1102 PM 52 1989 65 -5 63  
AVERAGE 70 72 -2 74  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.19 2006 0.14 -0.14 0.00  
MONTH TO DATE 0.53 3.78 -3.25 6.45  
SINCE JUN 1 8.05 11.04 -2.99 11.44  
SINCE JAN 1 23.78 29.84 -6.06 38.82  
 
SNOWFALL (IN)  
YESTERDAY 0.0 T 2020 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 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 1  
SINCE JUN 1 18 31 -13 1  
SINCE JUL 1 0 1 -1 1  
 
COOLING  
YESTERDAY 5 7 -2 9  
MONTH TO DATE 232 244 -12 248  
SINCE JUN 1 901 708 193 844  
SINCE JAN 1 913 737 176 886    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION W (270)  
AVERAGE WIND SPEED 8.5  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 75 300 AM  
LOWEST 35 200 PM  
AVERAGE 55  
   
......................................................  
 
THE ISLIP NY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 80 95 1973  
MINIMUM TEMPERATURE (F) 64 49 1986  
 
SUNRISE AND SUNSET  
AUGUST 28 2025........SUNRISE 616 AM EDT SUNSET 731 PM EDT  
AUGUST 29 2025........SUNRISE 617 AM EDT SUNSET 729 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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