Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 180519
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
119 AM EDT THU SEP 18 2014


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 17 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         74    410 PM  97    1991  79     -5       70
  MINIMUM         48    620 AM  35    1986  56     -8       45
  AVERAGE         61                        68     -7       58

PRECIPITATION (IN)
  YESTERDAY        0.00          1.71 2004   0.14  -0.14     0.00
  MONTH TO DATE    0.21                      2.17  -1.96     0.31
  SINCE SEP 1      0.21                      2.17  -1.96     0.31
  SINCE JAN 1     36.42                     30.17   6.25    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        4                         2      2        7
  MONTH TO DATE   20                        12      8       19
  SINCE SEP 1     20                        12      8       19
  SINCE JUL 1     23                        14      9       19

 COOLING
  YESTERDAY        0                         4     -4        0
  MONTH TO DATE  118                       105     13      129
  SINCE SEP 1    118                       105     13      129
  SINCE JAN 1    951                      1121   -170     1220
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED     9   HIGHEST WIND DIRECTION     W (250)
  HIGHEST GUST SPEED    12   HIGHEST GUST DIRECTION     W (260)
  AVERAGE WIND SPEED     2.5


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.4


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           400 AM
 LOWEST     44           200 PM
 AVERAGE    69

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   79        91      1978
 MINIMUM TEMPERATURE (F)   56        37      1990


SUNRISE AND SUNSET
SEPTEMBER 18 2014.....SUNRISE   654 AM EDT   SUNSET   713 PM EDT
SEPTEMBER 19 2014.....SUNRISE   655 AM EDT   SUNSET   712 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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