Climatological Report (Daily)
Issued by NWS Upton, NY

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905
CDUS41 KOKX 210617
CLIISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
117 AM EST FRI NOV 21 2025

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

...THE ISLIP NY CLIMATE SUMMARY FOR NOVEMBER 20 2025...

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)
 YESTERDAY
  MAXIMUM         50    254 PM  66    1985  52     -2       59
  MINIMUM         31   1155 PM  21    1986  36     -5       44
  AVERAGE         41                        44     -3       52

PRECIPITATION (IN)
  YESTERDAY        0.00          2.63 1988   0.11  -0.11     0.00
  MONTH TO DATE    1.22                      2.17  -0.95     0.23
  SINCE SEP 1      7.86                      9.74  -1.88     0.59
  SINCE JAN 1     31.64                     40.04  -8.40    39.46

SNOWFALL (IN)
  YESTERDAY        0.0           T    2017   0.0    0.0      0.0
  MONTH TO DATE    T                         0.2   -0.2      0.0
  SINCE SEP 1      T                         0.2   -0.2      0.0
  SINCE JUL 1      T                         0.2   -0.2      0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       24                        21      3       13
  MONTH TO DATE  349                       357     -8      261
  SINCE SEP 1    577                       711   -134      483
  SINCE JUL 1    577                       714   -137      484

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        4
  SINCE SEP 1    176                       121     55       91
  SINCE JAN 1   1104                       885    219     1012
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED     8   HIGHEST WIND DIRECTION    NW (330)
  HIGHEST GUST SPEED    10   HIGHEST GUST DIRECTION     N (340)
  AVERAGE WIND SPEED     2.7


SKY COVER
  AVERAGE SKY COVER 0.3


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    88          1200 AM
 LOWEST     41           300 PM
 AVERAGE    65

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


THE ISLIP NY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   52        65      1991
                                             2020
 MINIMUM TEMPERATURE (F)   36        18      1987


SUNRISE AND SUNSET
NOVEMBER 21 2025......SUNRISE   647 AM EST   SUNSET   430 PM EST
NOVEMBER 22 2025......SUNRISE   648 AM EST   SUNSET   429 PM EST


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




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