893  
CDUS41 KOKX 230630  
CLIISP  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE NEW YORK, NY  
230 AM EDT WED SEP 23 2026  
   
...............................  
 
   
..THE ISLIP NY CLIMATE SUMMARY FOR SEPTEMBER 22 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 69 113 PM 91 1980 73 -4 74  
MINIMUM 56 1159 PM 38 1997 57 -1 51  
AVERAGE 63 65 -2 63  
 
PRECIPITATION (IN)  
YESTERDAY T 1.32 1994 0.12 -0.12 0.00  
MONTH TO DATE 4.72 2.61 2.11 1.24  
SINCE SEP 1 4.72 2.61 2.11 1.24  
SINCE JAN 1 36.35 32.91 3.44 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 2 3 -1 2  
MONTH TO DATE 5 23 -18 7  
SINCE SEP 1 5 23 -18 7  
SINCE JUL 1 5 26 -21 7  
 
COOLING  
YESTERDAY 0 2 -2 0  
MONTH TO DATE 111 94 17 86  
SINCE SEP 1 111 94 17 86  
SINCE JAN 1 984 858 126 1014    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION E (90)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION NE (60)  
AVERAGE WIND SPEED 11.6  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 81 400 AM  
LOWEST 55 100 PM  
AVERAGE 68  
   
......................................................  
 
THE ISLIP NY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 88 1970  
1980  
MINIMUM TEMPERATURE (F) 56 40 1976  
 
SUNRISE AND SUNSET  
SEPTEMBER 23 2026.....SUNRISE 641 AM EDT SUNSET 648 PM EDT  
SEPTEMBER 24 2026.....SUNRISE 642 AM EDT SUNSET 646 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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