Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 190540
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1240 AM EST SUN NOV 19 2017


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

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

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1960 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         62   1122 PM  76    1963  57      5       73
  MINIMUM         31   1234 AM  18    2014  35     -4       30
  AVERAGE         47                        46      1       52

PRECIPITATION (IN)
  YESTERDAY        0.01          0.57 1968   0.12  -0.11     0.00
  MONTH TO DATE    1.87                      2.03  -0.16     0.23
  SINCE SEP 1      6.77                      9.20  -2.43     3.43
  SINCE JAN 1     39.77                     37.20   2.57    31.43

SNOWFALL (IN)
  YESTERDAY        0.0           0.0  2002   0.0    0.0
                                      2001
  MONTH TO DATE    0.0                       0.1   -0.1
  SINCE JUL 1      T                         0.1   -0.1
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       18                        19     -1       13
  MONTH TO DATE  327                       298     29      263
  SINCE SEP 1    547                       652   -105      474
  SINCE JUL 1    548                       654   -106      474

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    1                         0      1        2
  SINCE SEP 1    220                       160     60      296
  SINCE JAN 1   1281                      1176    105     1559
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    25   HIGHEST WIND DIRECTION     S (190)
  HIGHEST GUST SPEED    43   HIGHEST GUST DIRECTION    SW (220)
  AVERAGE WIND SPEED    12.5


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.8


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    85          1200 AM
 LOWEST     47           100 PM
 AVERAGE    66

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   56        76      1985
 MINIMUM TEMPERATURE (F)   35        13      2014


SUNRISE AND SUNSET
NOVEMBER 19 2017......SUNRISE   657 AM EST   SUNSET   453 PM EST
NOVEMBER 20 2017......SUNRISE   658 AM EST   SUNSET   452 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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