634
CDUS41 KOKX 212035
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
435 PM EDT TUE OCT 21 2025
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR OCTOBER 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 66 259 PM 77 2024 62 4 77
MINIMUM 48 631 AM 29 1974 45 3 42
AVERAGE 57 54 3 60
PRECIPITATION (IN)
TODAY 0.00 1.51 1995 0.13 -0.13 0.00
MONTH TO DATE 2.19 2.70 -0.51 0.10
SINCE SEP 1 3.77 6.30 -2.53 0.34
SINCE JAN 1 27.55 36.60 -9.05 39.21
SNOWFALL (IN)
TODAY 0.0 MM MM 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE SEP 1 0.0 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 8 11 -3 5
MONTH TO DATE 108 170 -62 137
SINCE SEP 1 115 223 -108 155
SINCE JUL 1 115 226 -111 156
COOLING
TODAY 0 0 0 0
MONTH TO DATE 20 10 10 3
SINCE SEP 1 176 118 58 83
SINCE JAN 1 1104 882 222 1004
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION SW (240)
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION SW (240)
AVERAGE WIND SPEED 10.6
SKY COVER
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 68 600 AM
LOWEST 40 1000 AM
AVERAGE 54
......................................................
THE ISLIP NY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 62 82 2024
MINIMUM TEMPERATURE (F) 45 27 1974
SUNRISE AND SUNSET
OCTOBER 21 2025.......SUNRISE 711 AM EDT SUNSET 603 PM EDT
OCTOBER 22 2025.......SUNRISE 712 AM EDT SUNSET 601 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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