204  
CDUS41 KOKX 010616  
CLIISP  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE NEW YORK, NY  
216 AM EDT MON SEP 01 2025  
   
...............................
 
 
   
..THE ISLIP NY CLIMATE SUMMARY FOR AUGUST 31 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 79 128 PM 94 1973 79 0 79  
2010  
MINIMUM 60 540 AM 45 1965 64 -4 65  
AVERAGE 70 72 -2 72  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.65 1981 0.11 -0.11 0.00  
MONTH TO DATE 0.53 4.24 -3.71 6.50  
SINCE JUN 1 8.05 11.50 -3.45 11.49  
SINCE JAN 1 23.78 30.30 -6.52 38.87  
 
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 5 7 -2 7  
MONTH TO DATE 247 271 -24 283  
SINCE JUN 1 916 735 181 879  
SINCE JAN 1 928 764 164 921    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION NE (50)  
AVERAGE WIND SPEED 5.9  
 
SKY COVER  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 75 1000 PM  
LOWEST 32 100 PM  
AVERAGE 54  
   
......................................................
 
 
THE ISLIP NY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 79 93 2010  
MINIMUM TEMPERATURE (F) 64 49 1991  
 
SUNRISE AND SUNSET  
SEPTEMBER 1 2025.....SUNRISE 620 AM EDT SUNSET 724 PM EDT  
SEPTEMBER 2 2025.....SUNRISE 621 AM EDT SUNSET 723 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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