Climatological Report (Daily)
Issued by NWS Sterling, VA

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349
CDUS41 KLWX 272132
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
532 PM EDT THU APR 27 2017


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 27 2017...
VALID TODAY AS OF 0500 PM LOCAL TIME.

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)
 TODAY
  MAXIMUM         82    356 PM  92    2009  70     12       69
                                      1990
  MINIMUM         54    348 AM  31    1987  45      9       53
                                      1972
  AVERAGE         68                        58     10       61

PRECIPITATION (IN)
  TODAY            0.00          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)
  TODAY            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
  TODAY            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
  TODAY            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    21   HIGHEST WIND DIRECTION     S (180)
  HIGHEST GUST SPEED    27   HIGHEST GUST DIRECTION    SW (210)
  AVERAGE WIND SPEED     5.3


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.7


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  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 TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   71        88      1990
                                             1983
                                             1981
 MINIMUM TEMPERATURE (F)   46        32      1993
                                             1972


SUNRISE AND SUNSET
APRIL 27 2017.........SUNRISE   617 AM EDT   SUNSET   759 PM EDT
APRIL 28 2017.........SUNRISE   615 AM EDT   SUNSET   800 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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