926  
CDUS41 KOKX 240617  
CLIISP  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE NEW YORK, NY  
217 AM EDT THU SEP 24 2026  
   
...............................  
 
   
..THE ISLIP NY CLIMATE SUMMARY FOR SEPTEMBER 23 2026  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1963 TO 2026  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 69 218 PM 88 1970 72 -3 79  
1980  
MINIMUM 54 1159 PM 40 1976 56 -2 65  
AVERAGE 62 64 -2 72  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.69 1975 0.11 -0.11 0.00  
MONTH TO DATE 4.72 2.72 2.00 1.24  
SINCE SEP 1 4.72 2.72 2.00 1.24  
SINCE JAN 1 36.35 33.02 3.33 25.02  
 
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 SEP 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 3 3 0 0  
MONTH TO DATE 8 26 -18 7  
SINCE SEP 1 8 26 -18 7  
SINCE JUL 1 8 29 -21 7  
 
COOLING  
YESTERDAY 0 2 -2 7  
MONTH TO DATE 111 96 15 93  
SINCE SEP 1 111 96 15 93  
SINCE JAN 1 984 860 124 1021    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION NE (40)  
HIGHEST GUST SPEED 38 HIGHEST GUST DIRECTION E (70)  
AVERAGE WIND SPEED 15.5  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 77 200 AM  
LOWEST 43 300 PM  
AVERAGE 60  
   
......................................................  
 
THE ISLIP NY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 89 2017  
MINIMUM TEMPERATURE (F) 56 38 1963  
 
SUNRISE AND SUNSET  
SEPTEMBER 24 2026.....SUNRISE 642 AM EDT SUNSET 646 PM EDT  
SEPTEMBER 25 2026.....SUNRISE 643 AM EDT SUNSET 644 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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