047
CDUS41 KOKX 212034
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
434 PM EDT THU MAY 21 2026
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR MAY 21 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 1227 AM 90 1996 70 -3 56
2022
MINIMUM 58 1113 AM 39 2002 52 6 49
2020
AVERAGE 63 61 2 53
PRECIPITATION (IN)
TODAY 0.04 0.90 1985 0.10 -0.06 0.12
MONTH TO DATE 1.17 2.13 -0.96 2.39
SINCE MAR 1 7.51 10.70 -3.19 9.13
SINCE JAN 1 13.75 17.65 -3.90 13.45
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 2 5 -3 12
MONTH TO DATE 140 156 -16 60
SINCE MAR 1 1290 1396 -106 1033
SINCE JUL 1 5146 5115 31 4515
COOLING
TODAY 0 1 -1 0
MONTH TO DATE 34 8 26 12
SINCE MAR 1 45 10 35 12
SINCE JAN 1 45 10 35 12
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION NE (30)
AVERAGE WIND SPEED 8.9
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 1200 AM
LOWEST 56 700 AM
AVERAGE 72
......................................................
THE ISLIP NY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 70 92 1992
MINIMUM TEMPERATURE (F) 53 37 2002
SUNRISE AND SUNSET
MAY 21 2026...........SUNRISE 530 AM EDT SUNSET 809 PM EDT
MAY 22 2026...........SUNRISE 529 AM EDT SUNSET 810 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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