529
CDUS41 KOKX 152031
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
431 PM EDT FRI MAY 15 2026
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR MAY 15 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 67 248 PM 82 1976 68 -1 72
MINIMUM 50 544 AM 40 1968 50 0 61
1999
AVERAGE 59 59 0 67
PRECIPITATION (IN)
TODAY 0.00 1.35 2024 0.09 -0.09 0.10
MONTH TO DATE 0.70 1.55 -0.85 2.26
SINCE MAR 1 7.04 10.12 -3.08 9.00
SINCE JAN 1 13.28 17.07 -3.79 13.32
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 MAR 1 0.2 7.1 -6.9 0.0
SINCE JUL 1 61.8 31.8 30.0 11.7
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 6 6 0 0
MONTH TO DATE 133 123 10 38
SINCE MAR 1 1283 1363 -80 1011
SINCE JUL 1 5139 5082 57 4493
COOLING
TODAY 0 1 -1 2
MONTH TO DATE 0 2 -2 4
SINCE MAR 1 11 4 7 4
SINCE JAN 1 11 4 7 4
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 10.8
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 80 500 AM
LOWEST 45 1200 PM
AVERAGE 63
......................................................
THE ISLIP NY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 68 86 1998
MINIMUM TEMPERATURE (F) 51 39 2000
SUNRISE AND SUNSET
MAY 15 2026...........SUNRISE 535 AM EDT SUNSET 803 PM EDT
MAY 16 2026...........SUNRISE 534 AM EDT SUNSET 804 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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