Climatological Report (Daily)
Issued by NWS Upton, NY

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745
CDUS41 KOKX 172132
CLIISP


CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
432 PM EST SUN DEC 17 2017


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

...THE ISLIP NY CLIMATE SUMMARY FOR DECEMBER 17 2017...
VALID TODAY AS OF 0400 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1963 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         34    331 PM  62    1984  42     -8       42
  MINIMUM         27    739 AM  13    1991  28     -1       25
  AVERAGE         31                        35     -4       34

PRECIPITATION (IN)
  TODAY            0.00          1.14 1970   0.13  -0.13     0.71
  MONTH TO DATE    1.10                      2.33  -1.23     2.10
  SINCE DEC 1      1.10                      2.33  -1.23     2.10
  SINCE JAN 1     42.42                     44.51  -2.09    33.56

SNOWFALL (IN)
  TODAY            0.0          MM      MM   0.2   -0.2      3.0
  MONTH TO DATE    4.7                       2.3    2.4      3.2
  SINCE OCT 1      4.7                       2.8    1.9      3.2
  SINCE JUL 1      4.7                       2.8    1.9      3.2
  SNOW DEPTH       T

DEGREE DAYS
 HEATING
  TODAY           34                        30      4       31
  MONTH TO DATE  477                       465     12      482
  SINCE DEC 1    477                       465     12      482
  SINCE JUL 1   1228                      1481   -253     1273

 COOLING
  TODAY            0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1    972                       787    185     1124
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    12   HIGHEST WIND DIRECTION     N (20)
  HIGHEST GUST SPEED    13   HIGHEST GUST DIRECTION     N (20)
  AVERAGE WIND SPEED     5.5


SKY COVER
  AVERAGE SKY COVER 1.0


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    69          1200 AM
 LOWEST     59          1200 PM
 AVERAGE    64

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


THE ISLIP NY CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   42        59      1984
 MINIMUM TEMPERATURE (F)   27        13      1980


SUNRISE AND SUNSET
DECEMBER 17 2017......SUNRISE   711 AM EST   SUNSET   426 PM EST
DECEMBER 18 2017......SUNRISE   712 AM EST   SUNSET   427 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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