164
CDUS41 KOKX 160619
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
219 AM EDT TUE SEP 16 2025
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR SEPTEMBER 15 2025
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)
YESTERDAY
MAXIMUM 82 220 PM 84 2008 75 7 80
MINIMUM 63 407 AM 40 1975 59 4 56
AVERAGE 73 67 6 68
PRECIPITATION (IN)
YESTERDAY 0.00 3.12 1966 0.12 -0.12 0.00
MONTH TO DATE 1.24 1.72 -0.48 0.06
SINCE SEP 1 1.24 1.72 -0.48 0.06
SINCE JAN 1 25.02 32.02 -7.00 38.93
SNOWFALL (IN)
YESTERDAY 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
YESTERDAY 0 1 -1 0
MONTH TO DATE 2 8 -6 5
SINCE SEP 1 2 8 -6 5
SINCE JUL 1 2 11 -9 6
COOLING
YESTERDAY 8 4 4 3
MONTH TO DATE 58 75 -17 40
SINCE SEP 1 58 75 -17 40
SINCE JAN 1 986 839 147 961
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WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION SE (140)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NE (30)
AVERAGE WIND SPEED 8.2
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 500 AM
LOWEST 37 300 PM
AVERAGE 65
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THE ISLIP NY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 88 1998
MINIMUM TEMPERATURE (F) 59 44 1964
SUNRISE AND SUNSET
SEPTEMBER 16 2025.....SUNRISE 634 AM EDT SUNSET 659 PM EDT
SEPTEMBER 17 2025.....SUNRISE 635 AM EDT SUNSET 658 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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