Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 230523
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
123 AM EDT MON OCT 23 2017


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 22 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         75    243 PM  85    1979  66      9       58
  MINIMUM         44    635 AM  26    1974  42      2       47
  AVERAGE         60                        54      6       53

PRECIPITATION (IN)
  YESTERDAY        0.00          0.90 1985   0.10  -0.10     0.00
  MONTH TO DATE    1.48                      2.29  -0.81     0.57
  SINCE SEP 1      3.23                      6.21  -2.98     3.12
  SINCE JAN 1     36.23                     34.21   2.02    31.12

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        5                        11     -6       12
  MONTH TO DATE   90                       183    -93      105
  SINCE SEP 1    130                       239   -109      111
  SINCE JUL 1    131                       241   -110      111

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE   64                        16     48       34
  SINCE SEP 1    219                       157     62      289
  SINCE JAN 1   1280                      1173    107     1552
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    13   HIGHEST WIND DIRECTION    SE (150)
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION     E (110)
  AVERAGE WIND SPEED     4.0


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.5


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           300 AM
 LOWEST     53           400 PM
 AVERAGE    77

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   66        85      1978
 MINIMUM TEMPERATURE (F)   41        21      1969


SUNRISE AND SUNSET
OCTOBER 23 2017.......SUNRISE   728 AM EDT   SUNSET   620 PM EDT
OCTOBER 24 2017.......SUNRISE   729 AM EDT   SUNSET   619 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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