Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 200528
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1228 AM EST FRI JAN 20 2017


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 19 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1962 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         52    338 PM  65    1972  42     10       26
  MINIMUM         31   1132 PM  -6    1994  24      7       13
  AVERAGE         42                        33      9       20

PRECIPITATION (IN)
  YESTERDAY        0.00          1.36 1987   0.09  -0.09     0.00
  MONTH TO DATE    1.80                      1.59   0.21     1.82
  SINCE DEC 1      4.16                      4.55  -0.39     5.58
  SINCE JAN 1      1.80                      1.59   0.21     1.82

SNOWFALL (IN)
  YESTERDAY        0.0           4.3  1978   0.3   -0.3
  MONTH TO DATE    0.7                       4.0   -3.3
  SINCE JUL 1      0.7                       8.0   -7.3
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       23                        32     -9       45
  MONTH TO DATE  510                       608    -98      597
  SINCE DEC 1   1333                      1490   -157     1100
  SINCE JUL 1   2060                      2406   -346     1850

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        2
  SINCE JAN 1      0                         0      0        0
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION     N (350)
  HIGHEST GUST SPEED    19   HIGHEST GUST DIRECTION    NW (310)
  AVERAGE WIND SPEED     4.4


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.7


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    92           800 PM
 LOWEST     54           200 PM
 AVERAGE    73

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   42        63      2006
 MINIMUM TEMPERATURE (F)   24        -7      1985


SUNRISE AND SUNSET
JANUARY 20 2017.......SUNRISE   725 AM EST   SUNSET   518 PM EST
JANUARY 21 2017.......SUNRISE   724 AM EST   SUNSET   519 PM EST


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




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