Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 280527
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
125 AM EDT FRI APR 28 2017


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 27 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         82    422 PM  92    2009  70     12       69
                                      1990
  MINIMUM         54    348 AM  31    1987  45      9       53
                                      1972
  AVERAGE         68                        58     10       61

PRECIPITATION (IN)
  YESTERDAY        T             1.65 1973   0.12  -0.12     0.02
  MONTH TO DATE    3.04                      3.12  -0.08     1.40
  SINCE MAR 1      7.16                      6.50   0.66     2.85
  SINCE JAN 1     10.60                     11.92  -1.32    11.11

SNOWFALL (IN)
  YESTERDAY        0.0           T    1994   0.0    0.0
  MONTH TO DATE    T                         0.3   -0.3
  SINCE JUL 1      7.3                      22.0  -14.7
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        0                         8     -8        4
  MONTH TO DATE  179                       315   -136      296
  SINCE MAR 1    819                       962   -143      742
  SINCE JUL 1   3712                      4552   -840     3833

 COOLING
  YESTERDAY        3                         1      2        0
  MONTH TO DATE   38                        15     23       18
  SINCE MAR 1     40                        18     22       23
  SINCE JAN 1     40                        18     22       23
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    22   HIGHEST WIND DIRECTION    SW (210)
  HIGHEST GUST SPEED    32   HIGHEST GUST DIRECTION    SW (210)
  AVERAGE WIND SPEED     7.3


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.7


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN
  FOG
  FOG W/VISIBILITY <= 1/4 MILE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           600 AM
 LOWEST     43           400 PM
 AVERAGE    72

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   71        88      1990
                                             1983
                                             1981
 MINIMUM TEMPERATURE (F)   46        32      1993
                                             1972


SUNRISE AND SUNSET
APRIL 28 2017.........SUNRISE   615 AM EDT   SUNSET   800 PM EDT
APRIL 29 2017.........SUNRISE   614 AM EDT   SUNSET   801 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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