468
CDUS41 KOKX 212133
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
433 PM EST FRI NOV 21 2025
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR NOVEMBER 21 2025
VALID TODAY AS OF 0400 PM LOCAL TIME.
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)
TODAY
MAXIMUM 53 251 PM 65 1991 52 1 53
2020
MINIMUM 30 1255 AM 18 1987 36 -6 40
AVERAGE 42 44 -2 47
PRECIPITATION (IN)
TODAY 0.00 2.26 2024 0.11 -0.11 2.26
MONTH TO DATE 1.22 2.28 -1.06 2.49
SINCE SEP 1 7.86 9.85 -1.99 2.85
SINCE JAN 1 31.64 40.15 -8.51 41.72
SNOWFALL (IN)
TODAY 0.0 T 1987 0.0 0.0 0.0
2016
2018
MONTH TO DATE T 0.2 -0.2 0.0
SINCE SEP 1 T 0.2 -0.2 0.0
SINCE JUL 1 T 0.2 -0.2 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 23 21 2 18
MONTH TO DATE 372 378 -6 279
SINCE SEP 1 600 732 -132 501
SINCE JUL 1 600 735 -135 502
COOLING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 4
SINCE SEP 1 176 121 55 91
SINCE JAN 1 1104 885 219 1012
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 3.7
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 85 500 AM
LOWEST 69 200 PM
AVERAGE 77
......................................................
THE ISLIP NY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 51 64 1973
MINIMUM TEMPERATURE (F) 36 18 2018
SUNRISE AND SUNSET
NOVEMBER 21 2025......SUNRISE 647 AM EST SUNSET 430 PM EST
NOVEMBER 22 2025......SUNRISE 648 AM EST SUNSET 429 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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