Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 190535
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1231 AM EST SUN FEB 19 2017


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR FEBRUARY 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         72    331 PM  75    2011  47     25       39
  MINIMUM         25    616 AM -14    1979  26     -1       23
  AVERAGE         49                        37     12       31

PRECIPITATION (IN)
  YESTERDAY        0.00          1.29 1964   0.10  -0.10     0.00
  MONTH TO DATE    0.25                      1.78  -1.53     2.57
  SINCE DEC 1      5.34                      7.42  -2.08    10.80
  SINCE JAN 1      2.98                      4.46  -1.48     7.04

SNOWFALL (IN)
  YESTERDAY        0.0           2.5  1979   0.3   -0.3
                                      1964
  MONTH TO DATE    0.6                       5.4   -4.8
  SINCE JUL 1      1.6                      16.7  -15.1
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       16                        28    -12       34
  MONTH TO DATE  438                       537    -99      572
  SINCE DEC 1   2047                      2405   -358     2108
  SINCE JUL 1   2774                      3321   -547     2858

 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    18   HIGHEST WIND DIRECTION    SW (210)
  HIGHEST GUST SPEED    23   HIGHEST GUST DIRECTION    SW (210)
  AVERAGE WIND SPEED     4.5


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.5


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    81           600 AM
 LOWEST     20           300 PM
 AVERAGE    51

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   47        71      1997
 MINIMUM TEMPERATURE (F)   27         6      2015


SUNRISE AND SUNSET
FEBRUARY 19 2017......SUNRISE   656 AM EST   SUNSET   552 PM EST
FEBRUARY 20 2017......SUNRISE   654 AM EST   SUNSET   553 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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