370  
CDUS41 KOKX 180643  
CLIISP  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE NEW YORK, NY  
243 AM EDT SAT MAY 18 2024  
   
...............................
 
 
   
..THE ISLIP NY CLIMATE SUMMARY FOR MAY 17 2024
 
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1963 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 74 230 PM 85 1974 69 5 64  
MINIMUM 56 300 AM 40 1967 51 5 48  
1983  
1984  
AVERAGE 65 60 5 56  
 
PRECIPITATION (IN)  
YESTERDAY T 1.94 1990 0.10 -0.10 0.00  
MONTH TO DATE 2.85 1.74 1.11 0.16  
SINCE MAR 1 15.84 10.31 5.53 8.01  
SINCE JAN 1 25.56 17.26 8.30 14.60  
 
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 MAR 1 0.0 7.1 -7.1 1.6  
SINCE JUL 1 10.9 31.8 -20.9 5.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 6 -6 9  
MONTH TO DATE 125 135 -10 115  
SINCE MAR 1 1150 1375 -225 1184  
SINCE JUL 1 4489 5094 -605 4323  
 
COOLING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 1 4 -3 12  
SINCE MAR 1 5 6 -1 24  
SINCE JAN 1 5 6 -1 24    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION NE (40)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION NE (40)  
AVERAGE WIND SPEED 8.4  
 
SKY COVER  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 100 AM  
LOWEST 50 200 PM  
AVERAGE 72  
   
......................................................
 
 
THE ISLIP NY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 69 89 1977  
2017  
MINIMUM TEMPERATURE (F) 51 38 2003  
2023  
 
SUNRISE AND SUNSET  
MAY 18 2024...........SUNRISE 532 AM EDT SUNSET 806 PM EDT  
MAY 19 2024...........SUNRISE 531 AM EDT SUNSET 807 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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