564
CDUS41 KOKX 172042
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
442 PM EDT FRI APR 17 2026
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR APRIL 17 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 79 259 PM 94 2002 59 20 63
MINIMUM 57 350 AM 30 1971 42 15 40
2005
2020
AVERAGE 68 50 18 52
PRECIPITATION (IN)
TODAY T 1.00 1986 0.13 -0.13 0.00
MONTH TO DATE 0.35 2.33 -1.98 1.40
SINCE MAR 1 4.54 6.84 -2.30 6.16
SINCE JAN 1 10.78 13.79 -3.01 10.48
SNOWFALL (IN)
TODAY 0.0 MM MM 0.0 0.0 0.0
MONTH TO DATE 0.0 0.5 -0.5 0.0
SINCE MAR 1 0.2 7.0 -6.8 0.0
SINCE JUL 1 61.8 31.7 30.1 11.7
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 0 15 -15 13
MONTH TO DATE 226 300 -74 282
SINCE MAR 1 943 1080 -137 896
SINCE JUL 1 4799 4799 0 4378
COOLING
TODAY 3 0 3 0
MONTH TO DATE 12 0 12 0
SINCE MAR 1 12 0 12 0
SINCE JAN 1 12 0 12 0
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION N (350)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 4.7
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 600 AM
LOWEST 43 1200 PM
AVERAGE 65
......................................................
THE ISLIP NY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 59 89 2002
MINIMUM TEMPERATURE (F) 42 31 1980
SUNRISE AND SUNSET
APRIL 17 2026.........SUNRISE 610 AM EDT SUNSET 734 PM EDT
APRIL 18 2026.........SUNRISE 609 AM EDT SUNSET 735 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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