791
CDUS41 KOKX 202133
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
433 PM EST THU NOV 20 2025
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR NOVEMBER 20 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 50 254 PM 66 1985 52 -2 59
MINIMUM 34 522 AM 21 1986 36 -2 44
AVERAGE 42 44 -2 52
PRECIPITATION (IN)
TODAY 0.00 2.63 1988 0.11 -0.11 0.00
MONTH TO DATE 1.22 2.17 -0.95 0.23
SINCE SEP 1 7.86 9.74 -1.88 0.59
SINCE JAN 1 31.64 40.04 -8.40 39.46
SNOWFALL (IN)
TODAY 0.0 T 2017 0.0 0.0 0.0
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 13
MONTH TO DATE 348 357 -9 261
SINCE SEP 1 576 711 -135 483
SINCE JUL 1 576 714 -138 484
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 8 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 10 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 3.9
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 88 1200 AM
LOWEST 41 300 PM
AVERAGE 65
......................................................
THE ISLIP NY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 52 65 1991
2020
MINIMUM TEMPERATURE (F) 36 18 1987
SUNRISE AND SUNSET
NOVEMBER 20 2025......SUNRISE 645 AM EST SUNSET 430 PM EST
NOVEMBER 21 2025......SUNRISE 647 AM EST SUNSET 430 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.
Main Text Page