Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 182124
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
524 PM EDT THU SEP 18 2014


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 18 2014...
VALID TODAY AS OF 0500 PM LOCAL TIME.

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)
 TODAY
  MAXIMUM         77    326 PM  91    1978  79     -2       71
  MINIMUM         53    416 AM  37    1990  56     -3       40
  AVERAGE         65                        67     -2       56

PRECIPITATION (IN)
  TODAY            0.00          1.76 2003   0.15  -0.15     0.00
  MONTH TO DATE    0.21                      2.32  -2.11     0.31
  SINCE SEP 1      0.21                      2.32  -2.11     0.31
  SINCE JAN 1     36.42                     30.32   6.10    28.16

SNOWFALL (IN)
  TODAY            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
  TODAY            0                         2     -2        9
  MONTH TO DATE   20                        14      6       28
  SINCE SEP 1     20                        14      6       28
  SINCE JUL 1     23                        16      7       28

 COOLING
  TODAY            0                         4     -4        0
  MONTH TO DATE  118                       109      9      129
  SINCE SEP 1    118                       109      9      129
  SINCE JAN 1    951                      1125   -174     1220
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION    NW (320)
  HIGHEST GUST SPEED    20   HIGHEST GUST DIRECTION    NW (320)
  AVERAGE WIND SPEED     3.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.7


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           200 AM
 LOWEST     36           200 PM
 AVERAGE    65

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   78        93      1978
                                             1977
 MINIMUM TEMPERATURE (F)   55        36      1984


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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