Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 280532
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
131 AM EDT SUN MAY 28 2017


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 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         72   1202 PM  92    2010  78     -6       89
                                      1965
  MINIMUM         55    427 AM  37    1972  55      0       67
  AVERAGE         64                        66     -2       78

PRECIPITATION (IN)
  YESTERDAY        0.01          1.45 1968   0.15  -0.14     0.00
  MONTH TO DATE    6.62                      3.94   2.68     6.07
  SINCE MAR 1     13.78                     10.79   2.99     9.40
  SINCE JAN 1     17.22                     16.21   1.01    17.66

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

DEGREE DAYS
 HEATING
  YESTERDAY        1                         2     -1        0
  MONTH TO DATE  140                       123     17      164
  SINCE MAR 1    959                      1105   -146      945
  SINCE JUL 1   3852                      4695   -843     4036

 COOLING
  YESTERDAY        0                         4     -4       13
  MONTH TO DATE   50                        56     -6       31
  SINCE MAR 1    119                        76     43       54
  SINCE JAN 1    119                        76     43       54
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED     9   HIGHEST WIND DIRECTION    NE (30)
  HIGHEST GUST SPEED    12   HIGHEST GUST DIRECTION     N (360)
  AVERAGE WIND SPEED     2.7


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.8


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93          1200 AM
 LOWEST     68          1000 AM
 AVERAGE    81

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   78        90      2012
                                             1991
 MINIMUM TEMPERATURE (F)   55        37      1994


SUNRISE AND SUNSET
MAY 28 2017...........SUNRISE   548 AM EDT   SUNSET   827 PM EDT
MAY 29 2017...........SUNRISE   547 AM EDT   SUNSET   827 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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