012
CDUS41 KOKX 182036
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
436 PM EDT FRI SEP 18 2026
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR SEPTEMBER 18 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 80 259 PM 85 1965 74 6 83
MINIMUM 71 521 AM 43 1986 58 13 66
1990
AVERAGE 76 66 10 75
PRECIPITATION (IN)
TODAY T 1.34 2023 0.13 -0.13 T
MONTH TO DATE 4.21 2.11 2.10 1.24
SINCE SEP 1 4.21 2.11 2.10 1.24
SINCE JAN 1 35.84 32.41 3.43 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 0
MONTH TO DATE 3 14 -11 2
SINCE SEP 1 3 14 -11 2
SINCE JUL 1 3 17 -14 2
COOLING
TODAY 11 3 8 10
MONTH TO DATE 112 84 28 77
SINCE SEP 1 112 84 28 77
SINCE JAN 1 985 848 137 1005
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION NW (320)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 8.4
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 300 AM
LOWEST 47 300 PM
AVERAGE 70
......................................................
THE ISLIP NY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 85 1983
2025
MINIMUM TEMPERATURE (F) 58 44 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.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page