Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 230540
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
140 AM EDT TUE MAY 23 2017


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 22 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         73    534 PM  88    2004  77     -4       57
                                      1984
                                      1975
  MINIMUM         57    559 AM  31    2002  53      4       52
  AVERAGE         65                        65      0       55

PRECIPITATION (IN)
  YESTERDAY        0.51          2.07 2001   0.15   0.36     0.69
  MONTH TO DATE    5.36                      3.18   2.18     5.55
  SINCE MAR 1     12.52                     10.03   2.49     8.88
  SINCE JAN 1     15.96                     15.45   0.51    17.14

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        0                         3     -3       10
  MONTH TO DATE  129                       109     20      164
  SINCE MAR 1    948                      1091   -143      945
  SINCE JUL 1   3841                      4681   -840     4036

 COOLING
  YESTERDAY        0                         3     -3        0
  MONTH TO DATE   50                        39     11        4
  SINCE MAR 1    119                        59     60       27
  SINCE JAN 1    119                        59     60       27
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    12   HIGHEST WIND DIRECTION     N (350)
  HIGHEST GUST SPEED    15   HIGHEST GUST DIRECTION     N (350)
  AVERAGE WIND SPEED     2.9


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           300 AM
 LOWEST     68           400 PM
 AVERAGE    81

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   77        92      1964
 MINIMUM TEMPERATURE (F)   53        39      2002
                                             1990
                                             1971


SUNRISE AND SUNSET
MAY 23 2017...........SUNRISE   551 AM EDT   SUNSET   823 PM EDT
MAY 24 2017...........SUNRISE   550 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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