Climatological Report (Daily)
Issued by NWS Sterling, VA

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315
CDUS41 KLWX 190522
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1222 AM EST THU JAN 19 2017


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR JANUARY 18 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         60    103 PM  69    1990  43     17       34
  MINIMUM         44    742 AM  -6    1893  28     16       16
  AVERAGE         52                        36     16       25

PRECIPITATION (IN)
  YESTERDAY        0.00          1.30 1980   0.09  -0.09      T
  MONTH TO DATE    1.82                      1.62   0.20     1.17
  SINCE DEC 1      4.43                      4.67  -0.24     6.01
  SINCE JAN 1      1.82                      1.62   0.20     1.17

SNOWFALL (IN)
  YESTERDAY        0.0           3.6  1984   0.2   -0.2
  MONTH TO DATE    0.4                       2.8   -2.4
  SINCE JUL 1      0.4                       5.6   -5.2
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       13                        29    -16       40
  MONTH TO DATE  440                       522    -82      493
  SINCE DEC 1   1150                      1308   -158      914
  SINCE JUL 1   1637                      2003   -366     1449

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


WIND (MPH)
  HIGHEST WIND SPEED    25   HIGHEST WIND DIRECTION    NW (330)
  HIGHEST GUST SPEED    31   HIGHEST GUST DIRECTION    NW (330)
  AVERAGE WIND SPEED    11.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.8


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100          1200 AM
 LOWEST     47           300 PM
 AVERAGE    74

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


THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   43        71      1951
 MINIMUM TEMPERATURE (F)   28        -4      1994


SUNRISE AND SUNSET
JANUARY 19 2017.......SUNRISE   723 AM EST   SUNSET   515 PM EST
JANUARY 20 2017.......SUNRISE   723 AM EST   SUNSET   516 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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