717
CDUS41 KOKX 180617
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
217 AM EDT SAT APR 18 2026
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR APRIL 17 2026
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)
YESTERDAY
MAXIMUM 80 305 PM 94 2002 59 21 63
MINIMUM 53 1159 PM 30 1971 42 11 40
2005
2020
AVERAGE 67 50 17 52
PRECIPITATION (IN)
YESTERDAY 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)
YESTERDAY 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
YESTERDAY 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
YESTERDAY 2 0 2 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 20 HIGHEST WIND DIRECTION E (100)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION NE (60)
AVERAGE WIND SPEED 5.8
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 1100 PM
LOWEST 43 1200 PM
AVERAGE 67
......................................................
THE ISLIP NY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 59 89 2002
MINIMUM TEMPERATURE (F) 42 31 1980
SUNRISE AND SUNSET
APRIL 18 2026.........SUNRISE 609 AM EDT SUNSET 735 PM EDT
APRIL 19 2026.........SUNRISE 607 AM EDT SUNSET 736 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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