685  
CXUS51 KOKX 021128  
CLSISP  
 
NYCCLSISP 000  
TTAA00 OKX 011945  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE NEW YORK, NY  
628 AM EST MON DEC 02 2024  
   
...............................  
 
...THE ISLIP NY CLIMATE SUMMARY FOR THE SEASON, FROM  
9/1/2024 TO 11/30/2024...  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1963 TO 2024  
 
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S  
VALUE DATE(S) VALUE FROM VALUE  
NORMAL    
..........................................................  
 
TEMPERATURE (F)  
RECORD  
HIGH 94 09/03/1973  
LOW 11 11/24/1989  
HIGHEST 84 09/14 MM MM  
09/19  
LOWEST 27 11/30 MM MM  
AVG. MAXIMUM 67.6 64.2 3.4  
AVG. MINIMUM 48.7 47.9 0.8  
MEAN 58.2 56.1 2.1  
DAYS MAX >= 90 0 0.2 -0.2  
DAYS MAX <= 32 0 0.2 -0.2  
DAYS MIN <= 32 4 10.1 -6.1  
DAYS MIN <= 0 0 0.0 0.0  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM 19.26 2018  
MINIMUM 3.31 1965  
TOTALS 3.70 10.98 -7.28 11.10  
DAILY AVG. 0.04 0.12 -0.08  
DAYS >= .01 15 27.4 -12.4  
DAYS >= .10 6 17.1 -11.1  
DAYS >= .50 1 7.8 -6.8  
DAYS >= 1.00 1 3.0 -2.0  
GREATEST  
24 HR. TOTAL 2.26 11/21 TO 11/21  
STORM TOTAL 2.26  
(MM/DD(HH))  
 
SNOWFALL (INCHES)  
RECORDS  
TOTAL 7.6 1989  
24 HR TOTAL 7.6 11/23/2008 TO 11/23/1989  
TOTALS 0.0 0.5 -0.5  
LIQUID EQUIV 0.00 0.00 0.00  
SINCE 7/1 0.0 0.5 -0.5  
LIQUID 7/1 0.00  
DAYS >= TRACE 0 0.3 -0.3  
DAYS >= 1.0 0 0.2 -0.2  
GREATEST  
SNOW DEPTH 0  
24 HR TOTAL 0.0  
STORM TOTAL 0.0  
(MM/DD(HH))  
 
DEGREE DAYS  
HEATING TOTAL 689 936 -247  
SINCE 7/1 690 939 -249  
COOLING TOTAL 91 121 -30  
SINCE 1/1 1012 885 127    
..........................................................  
 
WIND (MPH)  
AVERAGE WIND SPEED 8.4  
HIGHEST WIND SPEED/DIRECTION 31/MM DATE 11/12  
HIGHEST GUST SPEED/DIRECTION 47/320 DATE 11/23  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.45  
NUMBER OF DAYS FAIR 39  
NUMBER OF DAYS PC 39  
NUMBER OF DAYS CLOUDY 13  
 
AVERAGE RH (PERCENT) 66  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 1 MIXED PRECIP 0  
HEAVY RAIN 1 RAIN 5  
LIGHT RAIN 18 FREEZING RAIN 0  
LT FREEZING RAIN 0 HAIL 0  
HEAVY SNOW 0 SNOW 0  
LIGHT SNOW 0 SLEET 0  
FOG 23 FOG W/VIS <= 1/4 MILE 3  
HAZE 2  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
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