Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 190530
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1230 AM EST FRI DEC 19 2014


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR DECEMBER 18 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         43    100 PM  74    2006  46     -3       44
  MINIMUM         37    825 AM  10    1926  32      5       32
                                      1919
  AVERAGE         40                        39      1       38

PRECIPITATION (IN)
  YESTERDAY        0.00          2.81 1977   0.09  -0.09      T
  MONTH TO DATE    2.08                      1.87   0.21     3.13
  SINCE DEC 1      2.08                      1.87   0.21     3.13
  SINCE JAN 1     42.99                     38.56   4.43    41.84

SNOWFALL (IN)
  YESTERDAY        0.0           3.0  1945   0.1   -0.1
                                      1916
  MONTH TO DATE    T                         1.2   -1.2
  SINCE JUL 1      T                         1.7   -1.7
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       25                        26     -1       27
  MONTH TO DATE  368                       427    -59      441
  SINCE DEC 1    368                       427    -59      441
  SINCE JUL 1    975                      1122   -147     1149

 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    22   HIGHEST WIND DIRECTION     W (290)
  HIGHEST GUST SPEED    29   HIGHEST GUST DIRECTION    NW (300)
  AVERAGE WIND SPEED    11.5


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    52           900 PM
 LOWEST     40           600 AM
 AVERAGE    46

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


THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   46        74      1924
 MINIMUM TEMPERATURE (F)   32         6      1884


SUNRISE AND SUNSET
DECEMBER 19 2014......SUNRISE   722 AM EST   SUNSET   449 PM EST
DECEMBER 20 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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