225
CDUS41 KOKX 202033
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
433 PM EDT SAT SEP 20 2025
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR SEPTEMBER 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 75 1213 PM 87 1983 74 1 77
MINIMUM 61 556 AM 38 1979 58 3 66
AVERAGE 68 66 2 72
PRECIPITATION (IN)
TODAY 0.00 0.96 1988 0.12 -0.12 T
MONTH TO DATE 1.24 2.36 -1.12 0.06
SINCE SEP 1 1.24 2.36 -1.12 0.06
SINCE JAN 1 25.02 32.66 -7.64 38.93
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 0 2 -2 0
MONTH TO DATE 2 18 -16 5
SINCE SEP 1 2 18 -16 5
SINCE JUL 1 2 21 -19 6
COOLING
TODAY 3 3 0 7
MONTH TO DATE 88 90 -2 68
SINCE SEP 1 88 90 -2 68
SINCE JAN 1 1016 854 162 989
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION SE (150)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NE (60)
AVERAGE WIND SPEED 10.6
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 63 1200 AM
LOWEST 44 1100 AM
AVERAGE 54
......................................................
THE ISLIP NY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 73 84 1980
MINIMUM TEMPERATURE (F) 57 43 1973
1991
SUNRISE AND SUNSET
SEPTEMBER 20 2025.....SUNRISE 638 AM EDT SUNSET 652 PM EDT
SEPTEMBER 21 2025.....SUNRISE 639 AM EDT SUNSET 651 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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