Climatological Report (Daily)
Issued by NWS Upton, NY
Issued by NWS Upton, NY
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809
CDUS41 KOKX 182034
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
434 PM EDT SAT OCT 18 2025
...................................
...THE ISLIP NY CLIMATE SUMMARY FOR OCTOBER 18 2025...
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1963 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
TODAY
MAXIMUM 66 1249 PM 76 2016 63 3 67
MINIMUM 44 603 AM 31 1965 46 -2 45
1978
1982
AVERAGE 55 55 0 56
PRECIPITATION (IN)
TODAY 0.00 2.05 1990 0.13 -0.13 0.00
MONTH TO DATE 2.07 2.30 -0.23 0.10
SINCE SEP 1 3.65 5.90 -2.25 0.34
SINCE JAN 1 27.43 36.20 -8.77 39.21
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 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
TODAY 10 10 0 9
MONTH TO DATE 92 137 -45 117
SINCE SEP 1 99 190 -91 135
SINCE JUL 1 99 193 -94 136
COOLING
TODAY 0 0 0 0
MONTH TO DATE 20 10 10 3
SINCE SEP 1 176 118 58 83
SINCE JAN 1 1104 882 222 1004
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 4.5
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 80 700 AM
LOWEST 34 1200 PM
AVERAGE 57
..........................................................
THE ISLIP NY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 63 84 2016
MINIMUM TEMPERATURE (F) 46 27 1974
1976
SUNRISE AND SUNSET
OCTOBER 18 2025.......SUNRISE 707 AM EDT SUNSET 607 PM EDT
OCTOBER 19 2025.......SUNRISE 708 AM EDT SUNSET 606 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$