Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 280525
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
123 AM EDT FRI JUL 28 2017


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 27 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         87    338 PM  98    1993  88     -1       94
  MINIMUM         69    540 AM  52    1977  66      3       75
  AVERAGE         78                        77      1       85

PRECIPITATION (IN)
  YESTERDAY        0.07          3.50 1994   0.12  -0.05     0.00
  MONTH TO DATE    7.18                      3.18   4.00     1.37
  SINCE JUN 1      8.46                      7.16   1.30     7.72
  SINCE JAN 1     27.55                     23.98   3.57    25.39

SNOWFALL (IN)
  YESTERDAY        0.0          MM      MM   0.0    0.0
  MONTH TO DATE    T                         0.0    0.0
  SINCE JUL 1      T                         0.0    0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE JUN 1      6                        15     -9        3
  SINCE JUL 1      0                         0      0        0

 COOLING
  YESTERDAY       13                        12      1       20
  MONTH TO DATE  376                       319     57      394
  SINCE JUN 1    632                       556     76      647
  SINCE JAN 1    769                       648    121      745
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    12   HIGHEST WIND DIRECTION     S (190)
  HIGHEST GUST SPEED    15   HIGHEST GUST DIRECTION     S (200)
  AVERAGE WIND SPEED     4.5


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.8


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  THUNDERSTORM
  LIGHT RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100          1000 PM
 LOWEST     61           400 PM
 AVERAGE    81

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   88        99      1993
 MINIMUM TEMPERATURE (F)   66        47      1977


SUNRISE AND SUNSET
JULY 28 2017..........SUNRISE   607 AM EDT   SUNSET   825 PM EDT
JULY 29 2017..........SUNRISE   608 AM EDT   SUNSET   824 PM EDT


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




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