Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 220529
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
129 AM EDT SUN OCT 22 2017


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 21 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         77    221 PM  86    1979  67     10       76
  MINIMUM         42    635 AM  22    1972  42      0       55
  AVERAGE         60                        54      6       66

PRECIPITATION (IN)
  YESTERDAY        0.00          2.45 1995   0.11  -0.11     0.14
  MONTH TO DATE    1.48                      2.19  -0.71     0.57
  SINCE SEP 1      3.23                      6.11  -2.88     3.12
  SINCE JAN 1     36.23                     34.11   2.12    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        0
  MONTH TO DATE   85                       172    -87       93
  SINCE SEP 1    125                       228   -103       99
  SINCE JUL 1    126                       230   -104       99

 COOLING
  YESTERDAY        0                         0      0        1
  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     9   HIGHEST WIND DIRECTION     S (190)
  HIGHEST GUST SPEED    12   HIGHEST GUST DIRECTION     S (160)
  AVERAGE WIND SPEED     1.4


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.5


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           100 AM
 LOWEST     31           200 PM
 AVERAGE    66

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   66        85      1979
 MINIMUM TEMPERATURE (F)   42        26      1974


SUNRISE AND SUNSET
OCTOBER 22 2017.......SUNRISE   727 AM EDT   SUNSET   621 PM EDT
OCTOBER 23 2017.......SUNRISE   728 AM EDT   SUNSET   620 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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