Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 230524
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1222 AM EST MON JAN 23 2017


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 22 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         50   1159 PM  68    1986  43      7       28
  MINIMUM         46    937 AM -18    1984  24     22       14
  AVERAGE         48                        33     15       21

PRECIPITATION (IN)
  YESTERDAY        0.07          1.18 1987   0.09  -0.02     0.75
  MONTH TO DATE    1.90                      1.86   0.04     2.57
  SINCE DEC 1      4.26                      4.82  -0.56     6.33
  SINCE JAN 1      1.90                      1.86   0.04     2.57

SNOWFALL (IN)
  YESTERDAY        0.0          11.1  1987   0.3   -0.3
  MONTH TO DATE    0.7                       4.8   -4.1
  SINCE JUL 1      0.7                       8.8   -8.1
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       17                        32    -15       44
  MONTH TO DATE  568                       704   -136      723
  SINCE DEC 1   1391                      1586   -195     1226
  SINCE JUL 1   2118                      2502   -384     1976

 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    16   HIGHEST WIND DIRECTION     W (290)
  HIGHEST GUST SPEED    19   HIGHEST GUST DIRECTION    NE (60)
  AVERAGE WIND SPEED     6.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN
  FOG
  FOG W/VISIBILITY <= 1/4 MILE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           300 AM
 LOWEST     86          1200 PM
 AVERAGE    93

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   43        72      1967
 MINIMUM TEMPERATURE (F)   24        -4      1978
                                             1970


SUNRISE AND SUNSET
JANUARY 23 2017.......SUNRISE   723 AM EST   SUNSET   521 PM EST
JANUARY 24 2017.......SUNRISE   722 AM EST   SUNSET   522 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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