148
CDUS41 KOKX 210634
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
234 AM EDT MON SEP 21 2026
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR SEPTEMBER 20 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 69 1026 PM 87 1983 74 -5 75
MINIMUM 60 418 AM 38 1979 58 2 57
AVERAGE 65 66 -1 66
PRECIPITATION (IN)
YESTERDAY 0.24 0.96 1988 0.12 0.12 0.00
MONTH TO DATE 4.45 2.36 2.09 1.24
SINCE SEP 1 4.45 2.36 2.09 1.24
SINCE JAN 1 36.08 32.66 3.42 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 18 -15 2
SINCE SEP 1 3 18 -15 2
SINCE JUL 1 3 21 -18 2
COOLING
YESTERDAY 0 3 -3 1
MONTH TO DATE 111 90 21 86
SINCE SEP 1 111 90 21 86
SINCE JAN 1 984 854 130 1014
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WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION S (180)
AVERAGE WIND SPEED 7.7
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 1000 PM
LOWEST 72 300 AM
AVERAGE 86
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THE ISLIP NY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 73 84 1980
MINIMUM TEMPERATURE (F) 57 43 1973
1991
SUNRISE AND SUNSET
SEPTEMBER 21 2026.....SUNRISE 639 AM EDT SUNSET 651 PM EDT
SEPTEMBER 22 2026.....SUNRISE 640 AM EDT SUNSET 649 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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