Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 240523
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
123 AM EDT SUN SEP 24 2017


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 23 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1960 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         86    417 PM  93    2010  77      9       91
                                      2005
  MINIMUM         58    633 AM  33    1983  53      5       56
  AVERAGE         72                        65      7       74

PRECIPITATION (IN)
  YESTERDAY        0.00          1.74 2003   0.13  -0.13     0.00
  MONTH TO DATE    1.75                      3.00  -1.25     0.40
  SINCE SEP 1      1.75                      3.00  -1.25     0.40
  SINCE JAN 1     34.75                     31.00   3.75    28.40

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

DEGREE DAYS
 HEATING
  YESTERDAY        0                         3     -3        0
  MONTH TO DATE   30                        27      3        0
  SINCE SEP 1     30                        27      3        0
  SINCE JUL 1     31                        29      2        0

 COOLING
  YESTERDAY        7                         3      4        9
  MONTH TO DATE  102                       126    -24      251
  SINCE SEP 1    102                       126    -24      251
  SINCE JAN 1   1163                      1142     21     1514
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION     N (360)
  HIGHEST GUST SPEED    17   HIGHEST GUST DIRECTION     N (20)
  AVERAGE WIND SPEED     4.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.3


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100          1200 AM
 LOWEST     42           400 PM
 AVERAGE    71

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   76        97      2010
 MINIMUM TEMPERATURE (F)   53        30      1974


SUNRISE AND SUNSET
SEPTEMBER 24 2017.....SUNRISE   659 AM EDT   SUNSET   703 PM EDT
SEPTEMBER 25 2017.....SUNRISE   700 AM EDT   SUNSET   702 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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