473
CDUS41 KOKX 150659
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
159 AM EST MON DEC 15 2025
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR DECEMBER 14 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 34 1016 AM 62 2015 45 -11 35
MINIMUM 22 1159 PM 5 1982 30 -8 20
AVERAGE 28 38 -10 28
PRECIPITATION (IN)
YESTERDAY 0.23 1.62 1977 0.15 0.08 0.00
MONTH TO DATE 1.64 2.19 -0.55 2.43
SINCE DEC 1 1.64 2.19 -0.55 2.43
SINCE JAN 1 34.78 43.47 -8.69 45.00
SNOWFALL (IN)
YESTERDAY 5.8 R 4.1 2013 0.1 5.7 0.0
MONTH TO DATE 5.8 1.3 4.5 T
SINCE DEC 1 5.8 1.3 4.5 T
SINCE JUL 1 5.8 1.8 4.0 T
SNOW DEPTH 2
DEGREE DAYS
HEATING
YESTERDAY 37 28 9 37
MONTH TO DATE 424 362 62 397
SINCE DEC 1 424 362 62 397
SINCE JUL 1 1213 1301 -88 1087
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 1104 885 219 1012
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WIND (MPH)
HIGHEST WIND SPEED 29 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 41 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 11.5
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
SNOW
LIGHT SNOW
FOG
FOG W/VISIBILITY <= 1/4 MILE
BLOWING SNOW
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 400 AM
LOWEST 52 1000 PM
AVERAGE 74
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THE ISLIP NY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 45 62 2015
MINIMUM TEMPERATURE (F) 30 11 1968
SUNRISE AND SUNSET
DECEMBER 15 2025......SUNRISE 710 AM EST SUNSET 426 PM EST
DECEMBER 16 2025......SUNRISE 710 AM EST SUNSET 426 PM EST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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