Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 210523
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
122 AM EDT SUN SEP 21 2014


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 20 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1962 TO 2014


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         79    242 PM  91    1965  78      1       80
  MINIMUM         55    635 AM  40    1979  55      0       52
  AVERAGE         67                        66      1       66

PRECIPITATION (IN)
  YESTERDAY        0.00          0.87 1966   0.14  -0.14     0.00
  MONTH TO DATE    0.21                      2.61  -2.40     0.31
  SINCE SEP 1      0.21                      2.61  -2.40     0.31
  SINCE JAN 1     36.42                     30.61   5.81    28.16

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

DEGREE DAYS
 HEATING
  YESTERDAY        0                         2     -2        0
  MONTH TO DATE   22                        18      4       30
  SINCE SEP 1     22                        18      4       30
  SINCE JUL 1     25                        20      5       30

 COOLING
  YESTERDAY        2                         4     -2        1
  MONTH TO DATE  120                       117      3      130
  SINCE SEP 1    120                       117      3      130
  SINCE JAN 1    953                      1133   -180     1221
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION    SE (140)
  HIGHEST GUST SPEED    17   HIGHEST GUST DIRECTION     S (170)
  AVERAGE WIND SPEED     5.0


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.4


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           500 AM
 LOWEST     45           300 PM
 AVERAGE    73

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   77        92      1998
                                             1965
 MINIMUM TEMPERATURE (F)   54        42      1991


SUNRISE AND SUNSET
SEPTEMBER 21 2014.....SUNRISE   657 AM EDT   SUNSET   708 PM EDT
SEPTEMBER 22 2014.....SUNRISE   657 AM EDT   SUNSET   707 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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