Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 182129
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
429 PM EST WED JAN 18 2017


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 18 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         57    126 PM  70    1990  42     15       32
  MINIMUM         41    713 AM  -1    1994  24     17       14
  AVERAGE         49                        33     16       23

PRECIPITATION (IN)
  TODAY            0.00          1.18 1980   0.08  -0.08      T
  MONTH TO DATE    1.80                      1.50   0.30     1.82
  SINCE DEC 1      4.16                      4.46  -0.30     5.58
  SINCE JAN 1      1.80                      1.50   0.30     1.82

SNOWFALL (IN)
  TODAY            0.0           4.2  1984   0.2   -0.2
  MONTH TO DATE    0.7                       3.7   -3.0
  SINCE JUL 1      0.7                       7.7   -7.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  TODAY           16                        32    -16       42
  MONTH TO DATE  487                       576    -89      552
  SINCE DEC 1   1310                      1458   -148     1055
  SINCE JUL 1   2037                      2374   -337     1805

 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    28   HIGHEST WIND DIRECTION     W (290)
  HIGHEST GUST SPEED    35   HIGHEST GUST DIRECTION    NW (310)
  AVERAGE WIND SPEED     9.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.8


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100          1200 AM
 LOWEST     54           100 PM
 AVERAGE    77

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   42        65      1972
 MINIMUM TEMPERATURE (F)   24        -6      1994


SUNRISE AND SUNSET
JANUARY 18 2017.......SUNRISE   726 AM EST   SUNSET   515 PM EST
JANUARY 19 2017.......SUNRISE   725 AM EST   SUNSET   517 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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