Climatological Report (Daily)
Issued by NWS Upton, NY

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498
CDUS41 KOKX 172033
CLIISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
433 PM EDT FRI OCT 17 2025

...................................

...THE ISLIP NY CLIMATE SUMMARY FOR OCTOBER 17 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         65    259 PM  80    1963  64      1       58
  MINIMUM         49    617 AM  34    1965  47      2       39
  AVERAGE         57                        55      2       49

PRECIPITATION (IN)
  TODAY            0.00          1.06 1991   0.13  -0.13     0.00
  MONTH TO DATE    2.07                      2.17  -0.10     0.10
  SINCE SEP 1      3.65                      5.77  -2.12     0.34
  SINCE JAN 1     27.43                     36.07  -8.64    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            8                        10     -2       16
  MONTH TO DATE   82                       127    -45      108
  SINCE SEP 1     89                       180    -91      126
  SINCE JUL 1     89                       183    -94      127

 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    20   HIGHEST WIND DIRECTION    NW (330)
  HIGHEST GUST SPEED    28   HIGHEST GUST DIRECTION     N (360)
  AVERAGE WIND SPEED    13.5


SKY COVER
  AVERAGE SKY COVER 0.2


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    52           600 AM
 LOWEST     33           200 PM
 AVERAGE    43

..........................................................


THE ISLIP NY CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   63        76      2016
 MINIMUM TEMPERATURE (F)   46        31      1965
                                             1978
                                             1982


SUNRISE AND SUNSET
OCTOBER 17 2025.......SUNRISE   706 AM EDT   SUNSET   609 PM EDT
OCTOBER 18 2025.......SUNRISE   707 AM EDT   SUNSET   607 PM EDT


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




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