215
CDUS41 KOKX 200619
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
219 AM EDT TUE MAY 20 2025
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR MAY 19 2025
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)
YESTERDAY
MAXIMUM 72 359 PM 89 2017 69 3 69
MINIMUM 51 1159 PM 37 2002 52 -1 53
AVERAGE 62 60 2 61
PRECIPITATION (IN)
YESTERDAY 0.00 2.33 1966 0.10 -0.10 0.00
MONTH TO DATE 2.27 1.93 0.34 2.86
SINCE MAR 1 9.01 10.50 -1.49 15.85
SINCE JAN 1 13.33 17.45 -4.12 25.57
SNOWFALL (IN)
YESTERDAY 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
YESTERDAY 3 5 -2 4
MONTH TO DATE 41 146 -105 133
SINCE MAR 1 1014 1386 -372 1158
SINCE JUL 1 4496 5105 -609 4497
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 12 6 6 1
SINCE MAR 1 12 8 4 5
SINCE JAN 1 12 8 4 5
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WIND (MPH)
HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 37 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 16.3
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 69 400 AM
LOWEST 24 500 PM
AVERAGE 47
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THE ISLIP NY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 69 98 1996
MINIMUM TEMPERATURE (F) 52 35 1992
SUNRISE AND SUNSET
MAY 20 2025...........SUNRISE 531 AM EDT SUNSET 808 PM EDT
MAY 21 2025...........SUNRISE 530 AM EDT SUNSET 809 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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