Climatological Report (Daily)
Issued by NWS Sterling, VA

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810
CDUS41 KLWX 100522
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1222 AM EST SAT DEC 10 2016


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR DECEMBER 9 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2016


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         41    219 PM  71    1991  49     -8       49
  MINIMUM         30    524 AM   4    1876  34     -4       39
  AVERAGE         36                        41     -5       44

PRECIPITATION (IN)
  YESTERDAY        0.00          1.29 2009   0.11  -0.11      T
  MONTH TO DATE    1.40                      0.97   0.43     1.07
  SINCE DEC 1      1.40                      0.97   0.43     1.07
  SINCE JAN 1     30.49                     37.66  -7.17    41.25

SNOWFALL (IN)
  YESTERDAY        0.0           1.6  2005   0.0    0.0
  MONTH TO DATE    0.0                       0.5   -0.5
  SINCE JUL 1      0.0                       1.0   -1.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       29                        24      5       21
  MONTH TO DATE  175                       201    -26      166
  SINCE DEC 1    175                       201    -26      166
  SINCE JUL 1    662                       896   -234      701

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1   1994                      1549    445     1998
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    23   HIGHEST WIND DIRECTION    NW (320)
  HIGHEST GUST SPEED    32   HIGHEST GUST DIRECTION     W (290)
  AVERAGE WIND SPEED    13.5


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.1


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    54           900 PM
 LOWEST     37           200 PM
 AVERAGE    46

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


THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   48        67      1966
                                             1939
 MINIMUM TEMPERATURE (F)   34         4      1876


SUNRISE AND SUNSET
DECEMBER 10 2016......SUNRISE   716 AM EST   SUNSET   446 PM EST
DECEMBER 11 2016......SUNRISE   717 AM EST   SUNSET   446 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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