580
CDUS41 KOKX 210619
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
219 AM EDT THU AUG 21 2025
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR AUGUST 20 2025
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1963 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 70 112 PM 94 1983 81 -11 73
MINIMUM 62 759 PM 53 2008 66 -4 57
AVERAGE 66 73 -7 65
PRECIPITATION (IN)
YESTERDAY 0.32 2.61 2001 0.14 0.18 T
MONTH TO DATE 0.47 2.82 -2.35 6.44
SINCE JUN 1 7.99 10.08 -2.09 11.43
SINCE JAN 1 23.72 28.88 -5.16 38.81
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE JUN 1 0.0 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 18 31 -13 0
SINCE JUL 1 0 1 -1 0
COOLING
YESTERDAY 1 8 -7 0
MONTH TO DATE 184 189 -5 205
SINCE JUN 1 853 653 200 801
SINCE JAN 1 865 682 183 843
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NE (40)
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION NE (50)
AVERAGE WIND SPEED 10.6
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 400 PM
LOWEST 67 1200 AM
AVERAGE 80
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THE ISLIP NY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 81 94 1995
MINIMUM TEMPERATURE (F) 66 47 1977
SUNRISE AND SUNSET
AUGUST 21 2025........SUNRISE 609 AM EDT SUNSET 741 PM EDT
AUGUST 22 2025........SUNRISE 610 AM EDT SUNSET 740 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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