404
CDUS41 KOKX 212040
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
440 PM EDT MON SEP 21 2026
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR SEPTEMBER 21 2026
VALID TODAY AS OF 0400 PM LOCAL TIME.
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)
TODAY
MAXIMUM 70 255 PM 84 1980 73 -3 71
MINIMUM 59 704 AM 43 1973 57 2 52
1991
AVERAGE 65 65 0 62
PRECIPITATION (IN)
TODAY 0.27 2.16 1966 0.13 0.14 0.00
MONTH TO DATE 4.72 2.49 2.23 1.24
SINCE SEP 1 4.72 2.49 2.23 1.24
SINCE JAN 1 36.35 32.79 3.56 25.02
SNOWFALL (IN)
TODAY 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
TODAY 0 2 -2 3
MONTH TO DATE 3 20 -17 5
SINCE SEP 1 3 20 -17 5
SINCE JUL 1 3 23 -20 5
COOLING
TODAY 0 2 -2 0
MONTH TO DATE 111 92 19 86
SINCE SEP 1 111 92 19 86
SINCE JAN 1 984 856 128 1014
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION N (10)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 13.4
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 1200 AM
LOWEST 54 300 PM
AVERAGE 76
......................................................
THE ISLIP NY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 73 91 1980
MINIMUM TEMPERATURE (F) 57 38 1997
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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