993
CDUS41 KOKX 182048
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
448 PM EDT MON MAY 18 2026
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR MAY 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 83 951 AM 89 1977 69 14 76
2017
MINIMUM 59 449 AM 38 2003 51 8 59
2023
AVERAGE 71 60 11 68
PRECIPITATION (IN)
TODAY 0.00 1.60 2002 0.09 -0.09 0.00
MONTH TO DATE 0.70 1.83 -1.13 2.27
SINCE MAR 1 7.04 10.40 -3.36 9.01
SINCE JAN 1 13.28 17.35 -4.07 13.33
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 0 6 -6 0
MONTH TO DATE 138 141 -3 38
SINCE MAR 1 1288 1381 -93 1011
SINCE JUL 1 5144 5100 44 4493
COOLING
TODAY 6 1 5 3
MONTH TO DATE 12 5 7 12
SINCE MAR 1 23 7 16 12
SINCE JAN 1 23 7 16 12
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION S (200)
AVERAGE WIND SPEED 6.2
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 400 AM
LOWEST 55 900 AM
AVERAGE 74
......................................................
THE ISLIP NY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 69 89 2017
MINIMUM TEMPERATURE (F) 52 37 2002
SUNRISE AND SUNSET
MAY 18 2026...........SUNRISE 532 AM EDT SUNSET 806 PM EDT
MAY 19 2026...........SUNRISE 532 AM EDT SUNSET 807 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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