Climatological Report (Daily)
Issued by NWS Upton, NY
Issued by NWS Upton, NY
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CDUS41 KOKX 170632
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
232 AM EDT THU SEP 17 2026
...................................
...THE ISLIP NY CLIMATE SUMMARY FOR SEPTEMBER 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 76 143 PM 88 1998 75 1 76
MINIMUM 55 555 AM 44 1964 59 -4 63
AVERAGE 66 67 -1 70
PRECIPITATION (IN)
YESTERDAY T 2.26 1999 0.13 -0.13 0.00
MONTH TO DATE 4.21 1.85 2.36 1.24
SINCE SEP 1 4.21 1.85 2.36 1.24
SINCE JAN 1 35.84 32.15 3.69 25.02
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 SEP 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 2 -2 0
MONTH TO DATE 3 10 -7 2
SINCE SEP 1 3 10 -7 2
SINCE JUL 1 3 13 -10 2
COOLING
YESTERDAY 1 3 -2 5
MONTH TO DATE 93 78 15 63
SINCE SEP 1 93 78 15 63
SINCE JAN 1 966 842 124 991
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 5.6
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 600 AM
LOWEST 62 1200 PM
AVERAGE 78
..........................................................
THE ISLIP NY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 87 1991
MINIMUM TEMPERATURE (F) 59 45 1986
SUNRISE AND SUNSET
SEPTEMBER 17 2026.....SUNRISE 635 AM EDT SUNSET 658 PM EDT
SEPTEMBER 18 2026.....SUNRISE 636 AM EDT SUNSET 656 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$