Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 221808
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
108 PM EST MON DEC 22 2014


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 21 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1962 TO 2014


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         40    333 PM  70    2013  44     -4       70
  MINIMUM         25   1028 PM   4    1989  26     -1       51
  AVERAGE         33                        35     -2       61

PRECIPITATION (IN)
  YESTERDAY        0.00          1.15 1973   0.09  -0.09     0.00
  MONTH TO DATE    2.07                      2.12  -0.05     3.00
  SINCE DEC 1      2.07                      2.12  -0.05     3.00
  SINCE JAN 1     44.88                     40.70   4.18    42.76

SNOWFALL (IN)
  YESTERDAY        0.0           5.8  1962   0.1   -0.1
  MONTH TO DATE    T                         2.1   -2.1
  SINCE JUL 1      1.6                       2.6   -1.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       32                        30      2        4
  MONTH TO DATE  558                       574    -16      546
  SINCE DEC 1    558                       574    -16      546
  SINCE JUL 1   1552                      1490     62     1510

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1    968                      1178   -210     1272
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED     7   HIGHEST WIND DIRECTION    NE (60)
  HIGHEST GUST SPEED     9   HIGHEST GUST DIRECTION     N (10)
  AVERAGE WIND SPEED     1.6


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.7


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    85           300 AM
 LOWEST     50           200 PM
 AVERAGE    68

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   44        71      2013
 MINIMUM TEMPERATURE (F)   26         2      1989


SUNRISE AND SUNSET
DECEMBER 22 2014......SUNRISE   725 AM EST   SUNSET   451 PM EST
DECEMBER 23 2014......SUNRISE   726 AM EST   SUNSET   452 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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