Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 202122
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
422 PM EST FRI JAN 20 2017


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 20 2017...
VALID TODAY AS OF 0400 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1962 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         49    351 PM  63    2006  42      7       29
  MINIMUM         32   1234 AM  -7    1985  24      8       15
  AVERAGE         41                        33      8       22

PRECIPITATION (IN)
  TODAY            0.03          1.01 1979   0.09  -0.06      T
  MONTH TO DATE    1.83                      1.68   0.15     1.82
  SINCE DEC 1      4.19                      4.64  -0.45     5.58
  SINCE JAN 1      1.83                      1.68   0.15     1.82

SNOWFALL (IN)
  TODAY            0.0           4.6  2000   0.3   -0.3
  MONTH TO DATE    0.7                       4.3   -3.6
  SINCE JUL 1      0.7                       8.3   -7.6
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  TODAY           24                        32     -8       43
  MONTH TO DATE  534                       640   -106      640
  SINCE DEC 1   1357                      1522   -165     1143
  SINCE JUL 1   2084                      2438   -354     1893

 COOLING
  TODAY            0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        2
  SINCE JAN 1      0                         0      0        0
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    12   HIGHEST WIND DIRECTION    SE (150)
  HIGHEST GUST SPEED    15   HIGHEST GUST DIRECTION    SE (140)
  AVERAGE WIND SPEED     1.9


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  LIGHT RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    96           100 AM
 LOWEST     76          1100 AM
 AVERAGE    86

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   43        62      2006
 MINIMUM TEMPERATURE (F)   24       -16      1984


SUNRISE AND SUNSET
JANUARY 20 2017.......SUNRISE   725 AM EST   SUNSET   518 PM EST
JANUARY 21 2017.......SUNRISE   724 AM EST   SUNSET   519 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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