734  
CDUS41 KOKX 130619  
CLIISP  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE NEW YORK, NY  
219 AM EDT TUE MAY 13 2025  
   
...............................  
 
   
..THE ISLIP NY CLIMATE SUMMARY FOR MAY 12 2025  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1963 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 69 245 PM 87 1991 67 2 56  
MINIMUM 49 416 AM 37 1969 50 -1 45  
1983  
1990  
AVERAGE 59 58 1 51  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.74 2006 0.10 -0.10 T  
MONTH TO DATE 1.71 1.27 0.44 1.40  
SINCE MAR 1 8.45 9.84 -1.39 14.39  
SINCE JAN 1 12.77 16.79 -4.02 24.11  
 
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 0.0  
SINCE JUL 1 11.7 31.8 -20.1 10.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 6 7 -1 14  
MONTH TO DATE 36 103 -67 100  
SINCE MAR 1 1009 1343 -334 1125  
SINCE JUL 1 4491 5062 -571 4464  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 2 0 2 1  
SINCE MAR 1 2 2 0 5  
SINCE JAN 1 2 2 0 5    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION SE (130)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION SE (150)  
AVERAGE WIND SPEED 8.1  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 80 800 PM  
LOWEST 26 800 AM  
AVERAGE 53  
   
......................................................  
 
THE ISLIP NY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 68 81 2023  
MINIMUM TEMPERATURE (F) 50 37 2005  
 
SUNRISE AND SUNSET  
MAY 13 2025...........SUNRISE 537 AM EDT SUNSET 801 PM EDT  
MAY 14 2025...........SUNRISE 536 AM EDT SUNSET 802 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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