843  
CDUS41 KOKX 182135  
CLIISP  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE NEW YORK, NY  
435 PM EST MON DEC 18 2023  
   
...............................
 
 
   
..THE ISLIP NY CLIMATE SUMMARY FOR DECEMBER 18 2023
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 61R 758 AM 59 1984 44 17 41  
MINIMUM 50 259 PM 13 1980 29 21 28  
AVERAGE 56 36 20 35  
 
PRECIPITATION (IN)  
TODAY 1.65R 1.41 2012 0.15 1.50 0.00  
MONTH TO DATE 5.47 2.81 2.66 3.54  
SINCE DEC 1 5.47 2.81 2.66 3.54  
SINCE JAN 1 47.10 44.09 3.01 38.73  
 
SNOWFALL (IN)  
TODAY 0.0 5.0 1963 0.1 -0.1 0.0  
MONTH TO DATE T 1.9 -1.9 0.4  
SINCE DEC 1 T 1.9 -1.9 0.4  
SINCE JUL 1 T 2.4 -2.4 0.4  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 9 28 -19 30  
MONTH TO DATE 378 474 -96 448  
SINCE DEC 1 378 474 -96 448  
SINCE JUL 1 1267 1413 -146 1240  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 955 885 70 1136    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 40 HIGHEST WIND DIRECTION SE (120)  
HIGHEST GUST SPEED 51 HIGHEST GUST DIRECTION SE (130)  
AVERAGE WIND SPEED 23.6  
 
SKY COVER  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
THUNDERSTORM  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 100 AM  
LOWEST 74 400 PM  
AVERAGE 87  
   
......................................................
 
 
THE ISLIP NY CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 44 55 2017  
MINIMUM TEMPERATURE (F) 29 9 1989  
 
SUNRISE AND SUNSET  
DECEMBER 18 2023......SUNRISE 711 AM EST SUNSET 426 PM EST  
DECEMBER 19 2023......SUNRISE 712 AM EST SUNSET 427 PM EST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab NY Page
The Nexlab NJ Page
The Nexlab CT Page Main Text Page