Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 192130
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
430 PM EST FRI JAN 19 2018


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 19 2018...
VALID TODAY AS OF 0400 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1960 TO 2018


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         54    242 PM  65    1972  42     12       52
  MINIMUM         17    643 AM  -6    1994  24     -7       31
  AVERAGE         36                        33      3       42

PRECIPITATION (IN)
  TODAY            0.00          1.36 1987   0.09  -0.09     0.00
  MONTH TO DATE    1.51                      1.59  -0.08     1.80
  SINCE DEC 1      2.28                      4.55  -2.27     4.16
  SINCE JAN 1      1.51                      1.59  -0.08     1.80

SNOWFALL (IN)
  TODAY            0.0           4.3  1978   0.3   -0.3
  MONTH TO DATE    0.4                       4.0   -3.6
  SINCE JUL 1      5.0                       8.0   -3.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  TODAY           29                        32     -3       23
  MONTH TO DATE  712                       608    104      510
  SINCE DEC 1   1635                      1490    145     1333
  SINCE JUL 1   2429                      2406     23     2060

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


WIND (MPH)
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION    SW (210)
  HIGHEST GUST SPEED    18   HIGHEST GUST DIRECTION    SW (210)
  AVERAGE WIND SPEED     4.0


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.3


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    77           400 AM
 LOWEST     16           300 PM
 AVERAGE    47

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   42        63      2006
 MINIMUM TEMPERATURE (F)   24        -7      1985


SUNRISE AND SUNSET
JANUARY 19 2018.......SUNRISE   725 AM EST   SUNSET   516 PM EST
JANUARY 20 2018.......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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