Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 110528
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1225 AM EST SUN DEC 11 2016


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 10 2016...

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)
 YESTERDAY
  MAXIMUM         35    303 PM  70    1966  47    -12       63
  MINIMUM         22   1159 PM   4    1989  28     -6       35
  AVERAGE         29                        38     -9       49

PRECIPITATION (IN)
  YESTERDAY        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)
  YESTERDAY        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
  YESTERDAY       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
  YESTERDAY        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    22   HIGHEST WIND DIRECTION    NW (320)
  HIGHEST GUST SPEED    27   HIGHEST GUST DIRECTION    NW (320)
  AVERAGE WIND SPEED     8.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.2


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  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 TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   47        71      1979
 MINIMUM TEMPERATURE (F)   28         3      1968


SUNRISE AND SUNSET
DECEMBER 11 2016......SUNRISE   719 AM EST   SUNSET   448 PM EST
DECEMBER 12 2016......SUNRISE   720 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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