477
CDUS41 KOKX 202039
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
439 PM EDT TUE MAY 20 2025
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR MAY 20 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 67 203 PM 98 1996 69 -2 69
MINIMUM 48 430 AM 35 1992 52 -4 52
AVERAGE 58 61 -3 61
PRECIPITATION (IN)
TODAY 0.00 1.73 2023 0.10 -0.10 0.00
MONTH TO DATE 2.27 2.03 0.24 2.86
SINCE MAR 1 9.01 10.60 -1.59 15.85
SINCE JAN 1 13.33 17.55 -4.22 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 7 5 2 4
MONTH TO DATE 48 151 -103 137
SINCE MAR 1 1021 1391 -370 1162
SINCE JUL 1 4503 5110 -607 4501
COOLING
TODAY 0 1 -1 0
MONTH TO DATE 12 7 5 1
SINCE MAR 1 12 9 3 5
SINCE JAN 1 12 9 3 5
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION N (350)
AVERAGE WIND SPEED 13.0
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 66 300 AM
LOWEST 40 200 PM
AVERAGE 53
......................................................
THE ISLIP NY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 70 90 1996
2022
MINIMUM TEMPERATURE (F) 52 39 2002
2020
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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