Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 210524
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1222 AM EST TUE NOV 21 2017


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 20 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         51    331 PM  79    1985  56     -5       45
  MINIMUM         35    632 AM  18    1980  34      1       34
  AVERAGE         43                        45     -2       40

PRECIPITATION (IN)
  YESTERDAY        0.00          0.75 1983   0.11  -0.11     0.00
  MONTH TO DATE    1.96                      2.26  -0.30     0.25
  SINCE SEP 1      6.86                      9.43  -2.57     3.45
  SINCE JAN 1     39.86                     37.43   2.43    31.45

SNOWFALL (IN)
  YESTERDAY        0.0           T    2000   0.0    0.0
                                      1987
                                      1969
  MONTH TO DATE    0.0                       0.1   -0.1
  SINCE JUL 1      T                         0.1   -0.1
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       22                        20      2       25
  MONTH TO DATE  364                       338     26      300
  SINCE SEP 1    584                       692   -108      511
  SINCE JUL 1    585                       694   -109      511

 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    26   HIGHEST WIND DIRECTION    NW (310)
  HIGHEST GUST SPEED    33   HIGHEST GUST DIRECTION    NW (300)
  AVERAGE WIND SPEED    10.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.2


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    70          1100 PM
 LOWEST     30           300 PM
 AVERAGE    50

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   55        76      2007
 MINIMUM TEMPERATURE (F)   34        16      1969


SUNRISE AND SUNSET
NOVEMBER 21 2017......SUNRISE   659 AM EST   SUNSET   452 PM EST
NOVEMBER 22 2017......SUNRISE   700 AM EST   SUNSET   451 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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