Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 160533
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1227 AM EST SUN DEC 16 2018


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR DECEMBER 15 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2018


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         55   1052 AM  71    1971  47      8       31
  MINIMUM         48   1241 AM   6    1904  33     15       25
  AVERAGE         52                        40     12       28

PRECIPITATION (IN)
  YESTERDAY        2.55R         1.38 1901   0.10   2.45     0.01
  MONTH TO DATE    3.16                      1.59   1.57     0.29
  SINCE DEC 1      3.16                      1.59   1.57     0.29
  SINCE JAN 1     63.62                     38.28  25.34    35.39

SNOWFALL (IN)
  YESTERDAY        0.0           4.5  1905   0.1   -0.1
  MONTH TO DATE    0.0                       1.0   -1.0
  SINCE JUL 1      1.4                       1.5   -0.1
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       13                        25    -12       37
  MONTH TO DATE  348                       349     -1      351
  SINCE DEC 1    348                       349     -1      351
  SINCE JUL 1   1088                      1044     44      900

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1   2053                      1549    504     1826
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    21   HIGHEST WIND DIRECTION    NE (40)
  HIGHEST GUST SPEED    26   HIGHEST GUST DIRECTION     N (20)
  AVERAGE WIND SPEED    11.5


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  HEAVY RAIN
  RAIN
  LIGHT RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    96           400 PM
 LOWEST     86           700 AM
 AVERAGE    91

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


THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   46        74      1971
 MINIMUM TEMPERATURE (F)   32        10      1917


SUNRISE AND SUNSET
DECEMBER 16 2018......SUNRISE   720 AM EST   SUNSET   448 PM EST
DECEMBER 17 2018......SUNRISE   721 AM EST   SUNSET   448 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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