492
CDUS41 KOKX 180639
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
239 AM EDT FRI SEP 18 2026
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR SEPTEMBER 17 2026
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1963 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 80 1218 PM 87 1991 75 5 74
MINIMUM 66 558 AM 45 1986 59 7 64
AVERAGE 73 67 6 69
PRECIPITATION (IN)
YESTERDAY 0.00 2.85 1996 0.13 -0.13 T
MONTH TO DATE 4.21 1.98 2.23 1.24
SINCE SEP 1 4.21 1.98 2.23 1.24
SINCE JAN 1 35.84 32.28 3.56 25.02
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 3 12 -9 2
SINCE SEP 1 3 12 -9 2
SINCE JUL 1 3 15 -12 2
COOLING
YESTERDAY 8 3 5 4
MONTH TO DATE 101 81 20 67
SINCE SEP 1 101 81 20 67
SINCE JAN 1 974 845 129 995
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WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 7.9
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 500 AM
LOWEST 62 1200 PM
AVERAGE 81
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THE ISLIP NY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 85 1965
MINIMUM TEMPERATURE (F) 58 43 1986
1990
SUNRISE AND SUNSET
SEPTEMBER 18 2026.....SUNRISE 636 AM EDT SUNSET 656 PM EDT
SEPTEMBER 19 2026.....SUNRISE 637 AM EDT SUNSET 655 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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