Climatological Report (Daily)
Issued by NWS Upton, NY

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595
CDUS41 KOKX 200617
CLIISP

CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
117 AM EST THU NOV 20 2025

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

...THE ISLIP NY CLIMATE SUMMARY FOR NOVEMBER 19 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    259 PM  63    1985  52     -2       60
                                      1999
  MINIMUM         33   1050 PM  22    2014  37     -4       44
                                      2020
  AVERAGE         42                        44     -2       52

PRECIPITATION (IN)
  YESTERDAY        0.05          1.46 1986   0.12  -0.07      T
  MONTH TO DATE    1.22                      2.06  -0.84     0.23
  SINCE SEP 1      7.86                      9.63  -1.77     0.59
  SINCE JAN 1     31.64                     39.93  -8.29    39.46

SNOWFALL (IN)
  YESTERDAY        0.0           T    1986   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       23                        20      3       13
  MONTH TO DATE  325                       336    -11      248
  SINCE SEP 1    553                       690   -137      470
  SINCE JUL 1    553                       693   -140      471

 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    12   HIGHEST WIND DIRECTION    NE (30)
  HIGHEST GUST SPEED    14   HIGHEST GUST DIRECTION     N (20)
  AVERAGE WIND SPEED     2.8


SKY COVER
  AVERAGE SKY COVER 0.7


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    86           800 AM
 LOWEST     56           300 PM
 AVERAGE    71

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


THE ISLIP NY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   52        66      1985
 MINIMUM TEMPERATURE (F)   36        21      1986


SUNRISE AND SUNSET
NOVEMBER 20 2025......SUNRISE   645 AM EST   SUNSET   430 PM EST
NOVEMBER 21 2025......SUNRISE   647 AM EST   SUNSET   430 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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