450  
CDUS41 KOKX 190621  
CLIISP  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE NEW YORK, NY  
221 AM EDT FRI MAY 19 2023  
   
...............................
 
 
   
..THE ISLIP NY CLIMATE SUMMARY FOR MAY 18 2023
 
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1963 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 57 239 PM 89 1977 69 -12 71  
2017  
MINIMUM 38R 503 AM 38 2003 51 -13 54  
AVERAGE 48 60 -12 63  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.60 2002 0.09 -0.09 T  
MONTH TO DATE 0.16 1.83 -1.67 2.43  
SINCE MAR 1 8.01 10.40 -2.39 8.91  
SINCE JAN 1 14.60 17.35 -2.75 17.89  
 
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 1.6 7.1 -5.5 1.6  
SINCE JUL 1 5.0 31.8 -26.8 37.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 17 6 11 2  
MONTH TO DATE 132 141 -9 111  
SINCE MAR 1 1201 1381 -180 1245  
SINCE JUL 1 4340 5100 -760 4655  
 
COOLING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 12 5 7 7  
SINCE MAR 1 24 7 17 7  
SINCE JAN 1 24 7 17 7    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION S (170)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 7.8  
 
SKY COVER  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 74 1000 PM  
LOWEST 27 1000 AM  
AVERAGE 51  
   
......................................................
 
 
THE ISLIP NY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 69 89 2017  
MINIMUM TEMPERATURE (F) 52 37 2002  
 
SUNRISE AND SUNSET  
MAY 19 2023...........SUNRISE 532 AM EDT SUNSET 807 PM EDT  
MAY 20 2023...........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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