585
CDUS41 KOKX 202039
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
439 PM EDT MON APR 20 2026
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR APRIL 20 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 53 132 PM 83 1976 60 -7 70
MINIMUM 31 534 AM 28 1965 43 -12 49
AVERAGE 42 51 -9 60
PRECIPITATION (IN)
TODAY T 1.01 2009 0.13 -0.13 0.00
MONTH TO DATE 0.38 2.73 -2.35 1.40
SINCE MAR 1 4.57 7.24 -2.67 6.16
SINCE JAN 1 10.81 14.19 -3.38 10.48
SNOWFALL (IN)
TODAY 0.0 0.1 1983 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 23 14 9 5
MONTH TO DATE 281 342 -61 304
SINCE MAR 1 998 1122 -124 918
SINCE JUL 1 4854 4841 13 4400
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 22 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION N (350)
AVERAGE WIND SPEED 5.4
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 92 300 AM
LOWEST 36 200 PM
AVERAGE 64
......................................................
THE ISLIP NY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 61 76 1976
1996
2007
MINIMUM TEMPERATURE (F) 43 30 1965
SUNRISE AND SUNSET
APRIL 20 2026.........SUNRISE 606 AM EDT SUNSET 737 PM EDT
APRIL 21 2026.........SUNRISE 605 AM EDT SUNSET 738 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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