309
CDUS41 KOKX 270619
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
219 AM EDT MON APR 27 2026
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR APRIL 26 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 55 513 PM 88 2009 62 -7 63
MINIMUM 39 1146 PM 33 2024 45 -6 53
AVERAGE 47 54 -7 58
PRECIPITATION (IN)
YESTERDAY 0.23 1.97 1973 0.13 0.10 0.55
MONTH TO DATE 1.79 3.54 -1.75 1.98
SINCE MAR 1 5.98 8.05 -2.07 6.74
SINCE JAN 1 12.22 15.00 -2.78 11.06
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 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
YESTERDAY 18 12 6 7
MONTH TO DATE 382 417 -35 340
SINCE MAR 1 1099 1197 -98 954
SINCE JUL 1 4955 4916 39 4436
COOLING
YESTERDAY 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 NE (30)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NE (60)
AVERAGE WIND SPEED 8.1
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 1200 AM
LOWEST 47 500 PM
AVERAGE 72
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THE ISLIP NY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 63 81 1990
MINIMUM TEMPERATURE (F) 45 32 2002
SUNRISE AND SUNSET
APRIL 27 2026.........SUNRISE 556 AM EDT SUNSET 745 PM EDT
APRIL 28 2026.........SUNRISE 555 AM EDT SUNSET 746 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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