395
CDUS41 KOKX 212039
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
439 PM EDT TUE JUL 21 2026
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR JULY 21 2026
VALID TODAY AS OF 0400 PM LOCAL TIME.
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)
TODAY
MAXIMUM 78 115 PM 101 1991 83 -5 87
MINIMUM 66 114 AM 52 1974 68 -2 71
AVERAGE 72 76 -4 79
PRECIPITATION (IN)
TODAY 0.00 2.69 1984 0.11 -0.11 0.00
MONTH TO DATE 5.27 2.09 3.18 2.60
SINCE JUN 1 6.09 6.09 0.00 4.48
SINCE JAN 1 21.35 24.89 -3.54 20.21
SNOWFALL (IN)
TODAY 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
TODAY 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
TODAY 7 11 -4 14
MONTH TO DATE 224 206 18 284
SINCE JUN 1 424 358 66 524
SINCE JAN 1 479 387 92 536
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION S (160)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION S (160)
AVERAGE WIND SPEED 11.2
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 91 100 PM
LOWEST 79 900 AM
AVERAGE 85
......................................................
THE ISLIP NY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 83 100 2011
MINIMUM TEMPERATURE (F) 68 53 1974
SUNRISE AND SUNSET
JULY 21 2026..........SUNRISE 539 AM EDT SUNSET 818 PM EDT
JULY 22 2026..........SUNRISE 540 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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