Climatological Report (Daily)
Issued by NWS Upton, NY
Issued by NWS Upton, NY
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CDUS41 KOKX 290715
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
315 AM EDT TUE SEP 29 2026
...................................
...THE ISLIP NY CLIMATE SUMMARY FOR SEPTEMBER 28 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 62 235 PM 84 2025 71 -9 84
MINIMUM 57 1159 PM 38 1989 54 3 66
AVERAGE 60 62 -2 75
PRECIPITATION (IN)
YESTERDAY 0.47 1.79 2004 0.13 0.34 0.01
MONTH TO DATE 8.76 3.33 5.43 1.58
SINCE SEP 1 8.76 3.33 5.43 1.58
SINCE JAN 1 40.39 33.63 6.76 25.36
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 5 4 1 0
MONTH TO DATE 29 44 -15 7
SINCE SEP 1 29 44 -15 7
SINCE JUL 1 29 47 -18 7
COOLING
YESTERDAY 0 2 -2 10
MONTH TO DATE 111 106 5 141
SINCE SEP 1 111 106 5 141
SINCE JAN 1 984 870 114 1069
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION NE (50)
AVERAGE WIND SPEED 10.2
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 1200 AM
LOWEST 87 1100 PM
AVERAGE 92
..........................................................
THE ISLIP NY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 70 81 2015
MINIMUM TEMPERATURE (F) 54 39 1976
SUNRISE AND SUNSET
SEPTEMBER 29 2026.....SUNRISE 647 AM EDT SUNSET 638 PM EDT
SEPTEMBER 30 2026.....SUNRISE 648 AM EDT SUNSET 636 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$