Climatological Report (Daily)
Issued by NWS Upton, NY

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000
CDUS41 KOKX 170617
CLIISP


CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
116 AM EST SUN DEC 17 2017


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

...THE ISLIP NY CLIMATE SUMMARY FOR DECEMBER 16 2017...

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)
 YESTERDAY
  MAXIMUM         38    603 PM  64    1971  43     -5       28
  MINIMUM         17    255 AM  10    1988  28    -11       17
                                      1968
  AVERAGE         28                        35     -7       23

PRECIPITATION (IN)
  YESTERDAY        T             1.09 1974   0.13  -0.13     0.00
  MONTH TO DATE    1.10                      2.20  -1.10     1.39
  SINCE DEC 1      1.10                      2.20  -1.10     1.39
  SINCE JAN 1     42.42                     44.38  -1.96    32.85

SNOWFALL (IN)
  YESTERDAY        T             1.5  1995   0.2   -0.2      0.0
  MONTH TO DATE    4.7                       2.1    2.6      0.2
  SINCE OCT 1      4.7                       2.6    2.1      0.2
  SINCE JUL 1      4.7                       2.6    2.1      0.2
  SNOW DEPTH       2

DEGREE DAYS
 HEATING
  YESTERDAY       37                        30      7       42
  MONTH TO DATE  443                       435      8      451
  SINCE DEC 1    443                       435      8      451
  SINCE JUL 1   1194                      1451   -257     1242

 COOLING
  YESTERDAY        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    23   HIGHEST WIND DIRECTION     W (260)
  HIGHEST GUST SPEED    30   HIGHEST GUST DIRECTION     W (270)
  AVERAGE WIND SPEED    10.4


SKY COVER
  AVERAGE SKY COVER 0.6


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT SNOW


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    92           200 AM
 LOWEST     54           200 PM
 AVERAGE    73

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


THE ISLIP NY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   42        62      1984
 MINIMUM TEMPERATURE (F)   28        13      1991


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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