Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 172134
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
433 PM EST TUE JAN 17 2017


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 17 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         47    359 PM  70    1990  42      5       37
  MINIMUM         40    808 AM  -7    1982  24     16       30
  AVERAGE         44                        33     11       34

PRECIPITATION (IN)
  TODAY            0.20          1.14 1994   0.09   0.11     0.02
  MONTH TO DATE    1.80                      1.42   0.38     1.82
  SINCE DEC 1      4.16                      4.38  -0.22     5.58
  SINCE JAN 1      1.80                      1.42   0.38     1.82

SNOWFALL (IN)
  TODAY            0.0           4.2  1965   0.3   -0.3
  MONTH TO DATE    0.7                       3.5   -2.8
  SINCE JUL 1      0.7                       7.5   -6.8
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  TODAY           21                        32    -11       31
  MONTH TO DATE  473                       544    -71      510
  SINCE DEC 1   1296                      1426   -130     1013
  SINCE JUL 1   2023                      2342   -319     1763

 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     S (190)
  HIGHEST GUST SPEED    14   HIGHEST GUST DIRECTION     S (190)
  AVERAGE WIND SPEED     3.9


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93          1000 AM
 LOWEST     89          1200 PM
 AVERAGE    91

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   42        70      1990
 MINIMUM TEMPERATURE (F)   24        -1      1994


SUNRISE AND SUNSET
JANUARY 17 2017.......SUNRISE   726 AM EST   SUNSET   514 PM EST
JANUARY 18 2017.......SUNRISE   726 AM EST   SUNSET   515 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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