Climatological Report (Daily)
Issued by NWS Upton, NY
Issued by NWS Upton, NY
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CDUS41 KOKX 170633
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
233 AM EDT MON AUG 17 2026
...................................
...THE ISLIP NY CLIMATE SUMMARY FOR AUGUST 16 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 81 1201 PM 90 1997 82 -1 82
2001
2018
MINIMUM 65 540 AM 50 1972 66 -1 74
AVERAGE 73 74 -1 78
PRECIPITATION (IN)
YESTERDAY 0.04 2.40 1992 0.14 -0.10 0.00
MONTH TO DATE 2.69 2.27 0.42 0.15
SINCE JUN 1 11.12 9.53 1.59 7.67
SINCE JAN 1 26.38 28.33 -1.95 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 8 9 -1 13
MONTH TO DATE 198 154 44 161
SINCE JUN 1 698 618 80 830
SINCE JAN 1 753 647 106 842
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION S (200)
AVERAGE WIND SPEED 8.5
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 500 AM
LOWEST 54 1200 PM
AVERAGE 74
..........................................................
THE ISLIP NY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 82 91 1997
MINIMUM TEMPERATURE (F) 66 54 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.
$$