778
CDUS41 KOKX 200634
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
234 AM EDT SAT SEP 20 2025
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR SEPTEMBER 19 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 85R 320 PM 85 1983 74 11 84
MINIMUM 61 500 AM 44 1990 58 3 67
AVERAGE 73 66 7 76
PRECIPITATION (IN)
YESTERDAY 0.00 1.61 1972 0.13 -0.13 0.00
MONTH TO DATE 1.24 2.24 -1.00 0.06
SINCE SEP 1 1.24 2.24 -1.00 0.06
SINCE JAN 1 25.02 32.54 -7.52 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 2 -2 0
MONTH TO DATE 2 16 -14 5
SINCE SEP 1 2 16 -14 5
SINCE JUL 1 2 19 -17 6
COOLING
YESTERDAY 8 3 5 11
MONTH TO DATE 85 87 -2 61
SINCE SEP 1 85 87 -2 61
SINCE JAN 1 1013 851 162 982
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NW (330)
AVERAGE WIND SPEED 6.4
SKY COVER
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 86 500 AM
LOWEST 39 300 PM
AVERAGE 63
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THE ISLIP NY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 87 1983
MINIMUM TEMPERATURE (F) 58 38 1979
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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