506  
CDUS41 KOKX 182040  
CLIISP  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE NEW YORK, NY  
440 PM EDT SAT MAY 18 2024  
   
...............................
 
 
   
..THE ISLIP NY CLIMATE SUMMARY FOR MAY 18 2024
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 65 203 PM 89 1977 69 -4 57  
2017  
MINIMUM 57 521 AM 38 2003 51 6 38  
2023  
AVERAGE 61 60 1 48  
 
PRECIPITATION (IN)  
TODAY T 1.60 2002 0.09 -0.09 0.00  
MONTH TO DATE 2.85 1.83 1.02 0.16  
SINCE MAR 1 15.84 10.40 5.44 8.01  
SINCE JAN 1 25.56 17.35 8.21 14.60  
 
SNOWFALL (IN)  
TODAY 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  
TODAY 4 6 -2 17  
MONTH TO DATE 129 141 -12 132  
SINCE MAR 1 1154 1381 -227 1201  
SINCE JUL 1 4493 5100 -607 4340  
 
COOLING  
TODAY 0 1 -1 0  
MONTH TO DATE 1 5 -4 12  
SINCE MAR 1 5 7 -2 24  
SINCE JAN 1 5 7 -2 24    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION NE (40)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION NE (30)  
AVERAGE WIND SPEED MM  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 81 900 AM  
LOWEST 67 500 AM  
AVERAGE 74  
   
......................................................
 
 
THE ISLIP NY CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 69 89 2017  
MINIMUM TEMPERATURE (F) 52 37 2002  
 
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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