615
CDUS41 KOKX 122039
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
439 PM EDT FRI SEP 12 2025
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR SEPTEMBER 12 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 79 326 PM 90 2005 76 3 76
MINIMUM 61 138 AM 45 1993 60 1 55
AVERAGE 70 68 2 66
PRECIPITATION (IN)
TODAY 0.00 3.00 1978 0.12 -0.12 0.00
MONTH TO DATE 1.10 1.36 -0.26 0.06
SINCE SEP 1 1.10 1.36 -0.26 0.06
SINCE JAN 1 24.88 31.66 -6.78 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 1 -1 0
MONTH TO DATE 2 5 -3 5
SINCE SEP 1 2 5 -3 5
SINCE JUL 1 2 8 -6 6
COOLING
TODAY 5 4 1 1
MONTH TO DATE 42 63 -21 27
SINCE SEP 1 42 63 -21 27
SINCE JAN 1 970 827 143 948
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NE (50)
AVERAGE WIND SPEED 8.1
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 81 500 AM
LOWEST 15 1000 AM
AVERAGE 48
......................................................
THE ISLIP NY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 76 89 2005
MINIMUM TEMPERATURE (F) 60 48 1973
SUNRISE AND SUNSET
SEPTEMBER 12 2025.....SUNRISE 630 AM EDT SUNSET 706 PM EDT
SEPTEMBER 13 2025.....SUNRISE 631 AM EDT SUNSET 704 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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