Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 190522
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1222 AM EST THU JAN 19 2017


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 18 2017...

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)
 YESTERDAY
  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)
  YESTERDAY        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)
  YESTERDAY        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
  YESTERDAY       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
  YESTERDAY        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 0.7


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG


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

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


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


SUNRISE AND SUNSET
JANUARY 19 2017.......SUNRISE   725 AM EST   SUNSET   517 PM EST
JANUARY 20 2017.......SUNRISE   725 AM EST   SUNSET   518 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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