075
CDUS41 KOKX 200644
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
244 AM EDT THU AUG 20 2026
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR AUGUST 19 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 84 1246 PM 91 2002 81 3 76
MINIMUM 69 556 AM 54 1968 66 3 59
AVERAGE 77 74 3 68
PRECIPITATION (IN)
YESTERDAY 0.00 5.91 1991 0.14 -0.14 0.00
MONTH TO DATE 3.35 2.68 0.67 0.15
SINCE JUN 1 11.78 9.94 1.84 7.67
SINCE JAN 1 27.04 28.74 -1.70 23.40
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 10 31 -21 18
SINCE JUL 1 0 1 -1 0
COOLING
YESTERDAY 12 9 3 3
MONTH TO DATE 230 181 49 183
SINCE JUN 1 730 645 85 852
SINCE JAN 1 785 674 111 864
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WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION S (170)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION S (170)
AVERAGE WIND SPEED 5.9
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 200 AM
LOWEST 43 1100 AM
AVERAGE 72
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THE ISLIP NY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 81 94 1983
MINIMUM TEMPERATURE (F) 66 53 2008
SUNRISE AND SUNSET
AUGUST 20 2026........SUNRISE 608 AM EDT SUNSET 743 PM EDT
AUGUST 21 2026........SUNRISE 609 AM EDT SUNSET 742 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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