Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 180522
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
122 AM EDT WED OCT 18 2017


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 17 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         63    326 PM  84    2016  68     -5       84
  MINIMUM         36    630 AM  31    1982  43     -7       51
                                      1981
  AVERAGE         50                        56     -6       68

PRECIPITATION (IN)
  YESTERDAY        0.00          1.11 1975   0.10  -0.10     0.00
  MONTH TO DATE    1.48                      1.78  -0.30     0.40
  SINCE SEP 1      3.23                      5.70  -2.47     2.95
  SINCE JAN 1     36.23                     33.70   2.53    30.95

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       15                        10      5        0
  MONTH TO DATE   53                       130    -77       93
  SINCE SEP 1     93                       186    -93       99
  SINCE JUL 1     94                       188    -94       99

 COOLING
  YESTERDAY        0                         0      0        3
  MONTH TO DATE   64                        16     48        7
  SINCE SEP 1    219                       157     62      262
  SINCE JAN 1   1280                      1173    107     1525
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    10   HIGHEST WIND DIRECTION     N (350)
  HIGHEST GUST SPEED    15   HIGHEST GUST DIRECTION     N (340)
  AVERAGE WIND SPEED     3.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.0


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    92           500 AM
 LOWEST     30           400 PM
 AVERAGE    61

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   68        85      2016
 MINIMUM TEMPERATURE (F)   43        27      1982
                                             1976


SUNRISE AND SUNSET
OCTOBER 18 2017.......SUNRISE   723 AM EDT   SUNSET   627 PM EDT
OCTOBER 19 2017.......SUNRISE   724 AM EDT   SUNSET   625 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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