154
CDUS41 KOKX 120624
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
124 AM EST FRI DEC 12 2025
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR DECEMBER 11 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 43 1221 AM 65 1971 46 -3 60
MINIMUM 30 1159 PM 5 1968 31 -1 42
AVERAGE 37 38 -1 51
PRECIPITATION (IN)
YESTERDAY 0.00 2.65 1992 0.15 -0.15 1.56
MONTH TO DATE 1.38 1.72 -0.34 2.43
SINCE DEC 1 1.38 1.72 -0.34 2.43
SINCE JAN 1 34.52 43.00 -8.48 45.00
SNOWFALL (IN)
YESTERDAY 0.0 1.9 2019 0.1 -0.1 0.0
MONTH TO DATE T 0.9 -0.9 T
SINCE DEC 1 T 0.9 -0.9 T
SINCE JUL 1 T 1.4 -1.4 T
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 28 27 1 14
MONTH TO DATE 321 280 41 294
SINCE DEC 1 321 280 41 294
SINCE JUL 1 1110 1219 -109 984
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
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 30 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 45 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 16.8
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 79 1200 AM
LOWEST 32 100 PM
AVERAGE 56
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THE ISLIP NY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 45 68 2015
MINIMUM TEMPERATURE (F) 31 7 1988
SUNRISE AND SUNSET
DECEMBER 12 2025......SUNRISE 707 AM EST SUNSET 425 PM EST
DECEMBER 13 2025......SUNRISE 708 AM EST SUNSET 425 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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