Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 102127
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
426 PM EST SAT DEC 10 2016


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 10 2016...
VALID TODAY AS OF 0400 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1962 TO 2016


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         35    303 PM  70    1966  47    -12       63
  MINIMUM         22    623 AM   4    1989  28     -6       35
  AVERAGE         29                        38     -9       49

PRECIPITATION (IN)
  TODAY            0.00          2.26 1992   0.11  -0.11      T
  MONTH TO DATE    1.36                      1.09   0.27     0.80
  SINCE DEC 1      1.36                      1.09   0.27     0.80
  SINCE JAN 1     34.33                     39.67  -5.34    36.42

SNOWFALL (IN)
  TODAY            0.0           2.6  1992   0.1   -0.1
  MONTH TO DATE    T                         0.9   -0.9
  SINCE JUL 1      T                         1.4   -1.4
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  TODAY           36                        27      9       16
  MONTH TO DATE  245                       257    -12      221
  SINCE DEC 1    245                       257    -12      221
  SINCE JUL 1    972                      1173   -201      971

 COOLING
  TODAY            0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1   1559                      1178    381     1324
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    20   HIGHEST WIND DIRECTION    NW (300)
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION    NW (300)
  AVERAGE WIND SPEED     8.5


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.3


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    62           100 AM
 LOWEST     38          1100 AM
 AVERAGE    50

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   47        71      1979
 MINIMUM TEMPERATURE (F)   28         3      1968


SUNRISE AND SUNSET
DECEMBER 10 2016......SUNRISE   718 AM EST   SUNSET   448 PM EST
DECEMBER 11 2016......SUNRISE   719 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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