555
CDUS41 KOKX 190629
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
229 AM EDT FRI SEP 19 2025
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR SEPTEMBER 18 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 83 253 PM 85 1965 74 9 75
MINIMUM 66 1159 PM 43 1986 58 8 63
1990
AVERAGE 75 66 9 69
PRECIPITATION (IN)
YESTERDAY T 1.34 2023 0.13 -0.13 0.00
MONTH TO DATE 1.24 2.11 -0.87 0.06
SINCE SEP 1 1.24 2.11 -0.87 0.06
SINCE JAN 1 25.02 32.41 -7.39 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 14 -12 5
SINCE SEP 1 2 14 -12 5
SINCE JUL 1 2 17 -15 6
COOLING
YESTERDAY 10 3 7 4
MONTH TO DATE 77 84 -7 50
SINCE SEP 1 77 84 -7 50
SINCE JAN 1 1005 848 157 971
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WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 6.6
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 1000 PM
LOWEST 45 100 PM
AVERAGE 71
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THE ISLIP NY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 85 1983
MINIMUM TEMPERATURE (F) 58 44 1990
SUNRISE AND SUNSET
SEPTEMBER 19 2025.....SUNRISE 637 AM EDT SUNSET 654 PM EDT
SEPTEMBER 20 2025.....SUNRISE 638 AM EDT SUNSET 652 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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