Climatological Report (Daily)
Issued by NWS Upton, NY
Issued by NWS Upton, NY
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CDUS41 KOKX 172044
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
444 PM EDT MON AUG 17 2026
...................................
...THE ISLIP NY CLIMATE SUMMARY FOR AUGUST 17 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 1224 PM 91 1997 82 -4 86
MINIMUM 68 231 AM 54 1979 66 2 74
AVERAGE 73 74 -1 80
PRECIPITATION (IN)
TODAY 0.66 1.27 1992 0.13 0.53 0.00
MONTH TO DATE 3.35 2.40 0.95 0.15
SINCE JUN 1 11.78 9.66 2.12 7.67
SINCE JAN 1 27.04 28.46 -1.42 23.40
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 31 -21 18
SINCE JUL 1 0 1 -1 0
COOLING
TODAY 8 9 -1 15
MONTH TO DATE 206 163 43 176
SINCE JUN 1 706 627 79 845
SINCE JAN 1 761 656 105 857
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION SE (140)
AVERAGE WIND SPEED 11.5
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 700 AM
LOWEST 87 400 AM
AVERAGE 92
..........................................................
THE ISLIP NY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 81 92 2002
MINIMUM TEMPERATURE (F) 66 52 1979
SUNRISE AND SUNSET
AUGUST 17 2026........SUNRISE 605 AM EDT SUNSET 748 PM EDT
AUGUST 18 2026........SUNRISE 606 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.
$$