Climatological Report (Daily)
Issued by NWS Upton, NY
Issued by NWS Upton, NY
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CDUS41 KOKX 150623
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
223 AM EDT TUE SEP 15 2026
...................................
...THE ISLIP NY CLIMATE SUMMARY FOR SEPTEMBER 14 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 73 343 PM 86 1976 76 -3 79
MINIMUM 59 1159 PM 41 1975 60 -1 62
AVERAGE 66 68 -2 71
PRECIPITATION (IN)
YESTERDAY 0.00 1.44 1973 0.13 -0.13 0.00
MONTH TO DATE 4.21 1.60 2.61 1.24
SINCE SEP 1 4.21 1.60 2.61 1.24
SINCE JAN 1 35.84 31.90 3.94 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 1 -1 0
MONTH TO DATE 0 7 -7 2
SINCE SEP 1 0 7 -7 2
SINCE JUL 1 0 10 -10 2
COOLING
YESTERDAY 1 4 -3 6
MONTH TO DATE 92 71 21 50
SINCE SEP 1 92 71 21 50
SINCE JAN 1 965 835 130 978
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION NW (330)
AVERAGE WIND SPEED 11.4
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
FOG W/VISIBILITY <= 1/4 MILE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 1200 AM
LOWEST 37 1200 PM
AVERAGE 69
..........................................................
THE ISLIP NY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 84 2008
MINIMUM TEMPERATURE (F) 59 40 1975
SUNRISE AND SUNSET
SEPTEMBER 15 2026.....SUNRISE 633 AM EDT SUNSET 701 PM EDT
SEPTEMBER 16 2026.....SUNRISE 634 AM EDT SUNSET 700 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$