172
CDUS41 KOKX 182031
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
431 PM EDT SUN MAY 18 2025
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR MAY 18 2025
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1963 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 76 204 PM 89 1977 69 7 65
2017
MINIMUM 59 403 AM 38 2003 51 8 57
2023
AVERAGE 68 60 8 61
PRECIPITATION (IN)
TODAY 0.00 1.60 2002 0.09 -0.09 0.01
MONTH TO DATE 2.27 1.83 0.44 2.86
SINCE MAR 1 9.01 10.40 -1.39 15.85
SINCE JAN 1 13.33 17.35 -4.02 25.57
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 0.0 7.1 -7.1 0.0
SINCE JUL 1 11.7 31.8 -20.1 10.9
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 0 6 -6 4
MONTH TO DATE 38 141 -103 129
SINCE MAR 1 1011 1381 -370 1154
SINCE JUL 1 4493 5100 -607 4493
COOLING
TODAY 3 1 2 0
MONTH TO DATE 12 5 7 1
SINCE MAR 1 12 7 5 5
SINCE JAN 1 12 7 5 5
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION W (280)
HIGHEST GUST SPEED 36 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 14.3
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 73 1200 AM
LOWEST 40 100 PM
AVERAGE 57
......................................................
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 2025...........SUNRISE 532 AM EDT SUNSET 806 PM EDT
MAY 19 2025...........SUNRISE 531 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.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page