508
CDUS41 KOKX 200618
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
218 AM EDT MON JUL 20 2026
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR JULY 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 80 437 PM 95 1977 83 -3 83
MINIMUM 63 1159 PM 57 2000 68 -5 66
AVERAGE 72 76 -4 75
PRECIPITATION (IN)
YESTERDAY 0.00 0.76 1971 0.11 -0.11 0.00
MONTH TO DATE 5.27 1.88 3.39 2.60
SINCE JUN 1 6.09 5.88 0.21 4.48
SINCE JAN 1 21.35 24.68 -3.33 20.21
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 30 -20 18
SINCE JUL 1 0 0 0 0
COOLING
YESTERDAY 7 10 -3 10
MONTH TO DATE 213 185 28 253
SINCE JUN 1 413 337 76 493
SINCE JAN 1 468 366 102 505
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 9.2
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 1200 AM
LOWEST 39 500 PM
AVERAGE 68
......................................................
THE ISLIP NY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 83 97 1991
2019
MINIMUM TEMPERATURE (F) 68 52 1996
SUNRISE AND SUNSET
JULY 20 2026..........SUNRISE 538 AM EDT SUNSET 819 PM EDT
JULY 21 2026..........SUNRISE 539 AM EDT SUNSET 818 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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