Climatological Report (Daily)
Issued by NWS Portland, ME

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069
CDUS41 KGYX 161350
CLIPWM


CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
850 AM EST SAT DEC 16 2017


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

...THE PORTLAND ME CLIMATE SUMMARY FOR DECEMBER 15 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1941 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         23    430 PM  57    2008  38    -15       26
  MINIMUM          6    747 AM  -3    1989  21    -15        2
  AVERAGE         15                        29    -14       14

PRECIPITATION (IN)
  YESTERDAY        0.01          2.30 1884   0.13  -0.12      T
  MONTH TO DATE    2.05                      2.07  -0.02     1.97
  SINCE DEC 1      2.05                      2.07  -0.02     1.97
  SINCE JAN 1     42.22                     45.30  -3.08    38.78

SNOWFALL (IN)
  YESTERDAY        0.1          10.6  2013   0.4   -0.3       T
  MONTH TO DATE    8.8                       5.1    3.7      6.2
  SINCE DEC 1      8.8                       5.1    3.7      6.2
  SINCE JUL 1      8.9                       7.0    1.9      6.7
  SNOW DEPTH       3

DEGREE DAYS
 HEATING
  YESTERDAY       50                        36     14       51
  MONTH TO DATE  501                       500      1      526
  SINCE DEC 1    501                       500      1      526
  SINCE JUL 1   1666                      1991   -325     1778

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1    433                       359     74      553
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED   0   RESULTANT WIND DIRECTION   N (350)
  HIGHEST WIND SPEED    13   HIGHEST WIND DIRECTION     W (260)
  HIGHEST GUST SPEED    17   HIGHEST GUST DIRECTION    SW (230)
  AVERAGE WIND SPEED     3.1


SKY COVER
  AVERAGE SKY COVER 0.5


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT SNOW
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    84          1100 PM
 LOWEST     45          1200 PM
 AVERAGE    65

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


THE PORTLAND ME CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   37        56      2008
 MINIMUM TEMPERATURE (F)   20        -9      1951


SUNRISE AND SUNSET
DECEMBER 16 2017......SUNRISE   709 AM EST   SUNSET   405 PM EST
DECEMBER 17 2017......SUNRISE   709 AM EST   SUNSET   406 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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