829  
CDUS41 KOKX 240628  
CLIISP  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE NEW YORK, NY  
228 AM EDT SUN AUG 24 2025  
   
...............................  
 
   
..THE ISLIP NY CLIMATE SUMMARY FOR AUGUST 23 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 81 1152 AM 91 1989 81 0 81  
MINIMUM 64 439 AM 52 1975 65 -1 58  
AVERAGE 73 73 0 70  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.05 1970 0.14 -0.14 0.00  
MONTH TO DATE 0.53 3.23 -2.70 6.44  
SINCE JUN 1 8.05 10.49 -2.44 11.43  
SINCE JAN 1 23.78 29.29 -5.51 38.81  
 
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 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 8 8 0 5  
MONTH TO DATE 203 213 -10 211  
SINCE JUN 1 872 677 195 807  
SINCE JAN 1 884 706 178 849    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 9.1  
 
SKY COVER  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 84 400 AM  
LOWEST 38 1000 AM  
AVERAGE 61  
   
......................................................  
 
THE ISLIP NY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 81 92 2022  
MINIMUM TEMPERATURE (F) 65 49 1971  
 
SUNRISE AND SUNSET  
AUGUST 24 2025........SUNRISE 612 AM EDT SUNSET 737 PM EDT  
AUGUST 25 2025........SUNRISE 613 AM EDT SUNSET 735 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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