Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 180525
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1224 AM EST THU DEC 18 2014


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR DECEMBER 17 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2014


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         58   1255 PM  64    1984  46     12       40
                                      1939
  MINIMUM         40   1140 PM  10    1876  32      8       35
  AVERAGE         49                        39     10       38

PRECIPITATION (IN)
  YESTERDAY        0.00          2.43 1888   0.10  -0.10     0.02
  MONTH TO DATE    2.08                      1.78   0.30     3.13
  SINCE DEC 1      2.08                      1.78   0.30     3.13
  SINCE JAN 1     42.99                     38.47   4.52    41.84

SNOWFALL (IN)
  YESTERDAY        0.0          11.5  1932   0.1   -0.1
  MONTH TO DATE    T                         1.1   -1.1
  SINCE JUL 1      T                         1.6   -1.6
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       16                        26    -10       27
  MONTH TO DATE  343                       401    -58      414
  SINCE DEC 1    343                       401    -58      414
  SINCE JUL 1    950                      1096   -146     1122

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1   1712                      1549    163     1719
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    23   HIGHEST WIND DIRECTION    NW (300)
  HIGHEST GUST SPEED    29   HIGHEST GUST DIRECTION    NW (330)
  AVERAGE WIND SPEED    10.4


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.3


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    89           400 AM
 LOWEST     38           300 PM
 AVERAGE    64

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


THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   46        74      2006
 MINIMUM TEMPERATURE (F)   32        10      1926
                                             1919


SUNRISE AND SUNSET
DECEMBER 18 2014......SUNRISE   721 AM EST   SUNSET   448 PM EST
DECEMBER 19 2014......SUNRISE   722 AM EST   SUNSET   449 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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