910
CDUS41 KOKX 212044
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
444 PM EDT TUE APR 21 2026
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR APRIL 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 49 1229 PM 76 1976 61 -12 56
1996
2007
MINIMUM 33 519 AM 30 1965 43 -10 45
AVERAGE 41 52 -11 51
PRECIPITATION (IN)
TODAY 0.00 3.44 2000 0.13 -0.13 T
MONTH TO DATE 0.38 2.86 -2.48 1.40
SINCE MAR 1 4.57 7.37 -2.80 6.16
SINCE JAN 1 10.81 14.32 -3.51 10.48
SNOWFALL (IN)
TODAY 0.0 T 2020 0.0 0.0 0.0
MONTH TO DATE 0.0 0.6 -0.6 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 24 13 11 14
MONTH TO DATE 305 355 -50 318
SINCE MAR 1 1022 1135 -113 932
SINCE JUL 1 4878 4854 24 4414
COOLING
TODAY 0 0 0 0
MONTH TO DATE 11 0 11 0
SINCE MAR 1 11 0 11 0
SINCE JAN 1 11 0 11 0
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION S (170)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION S (160)
AVERAGE WIND SPEED 8.2
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 51 500 AM
LOWEST 35 1000 AM
AVERAGE 43
......................................................
THE ISLIP NY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 61 75 1985
2007
MINIMUM TEMPERATURE (F) 43 29 1975
SUNRISE AND SUNSET
APRIL 21 2026.........SUNRISE 605 AM EDT SUNSET 738 PM EDT
APRIL 22 2026.........SUNRISE 603 AM EDT SUNSET 739 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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