305  
CDUS41 KOKX 220630  
CLIISP  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE NEW YORK, NY  
230 AM EDT FRI AUG 22 2025  
   
...............................  
 
   
..THE ISLIP NY CLIMATE SUMMARY FOR AUGUST 21 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 74 306 PM 94 1995 81 -7 74  
MINIMUM 62 603 AM 47 1977 66 -4 54  
AVERAGE 68 73 -5 64  
 
PRECIPITATION (IN)  
YESTERDAY 0.06 1.31 1997 0.14 -0.08 0.00  
MONTH TO DATE 0.53 2.96 -2.43 6.44  
SINCE JUN 1 8.05 10.22 -2.17 11.43  
SINCE JAN 1 23.78 29.02 -5.24 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 1  
MONTH TO DATE 0 0 0 1  
SINCE JUN 1 18 31 -13 1  
SINCE JUL 1 0 1 -1 1  
 
COOLING  
YESTERDAY 3 8 -5 0  
MONTH TO DATE 187 197 -10 205  
SINCE JUN 1 856 661 195 801  
SINCE JAN 1 868 690 178 843    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 29 HIGHEST WIND DIRECTION NE (30)  
HIGHEST GUST SPEED 39 HIGHEST GUST DIRECTION NE (40)  
AVERAGE WIND SPEED 17.6  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 1200 AM  
LOWEST 50 1100 PM  
AVERAGE 72  
   
......................................................  
 
THE ISLIP NY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 81 91 2019  
MINIMUM TEMPERATURE (F) 65 49 1982  
 
SUNRISE AND SUNSET  
AUGUST 22 2025........SUNRISE 610 AM EDT SUNSET 740 PM EDT  
AUGUST 23 2025........SUNRISE 611 AM EDT SUNSET 738 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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