Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 202122
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
422 PM EST FRI JAN 20 2017


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR JANUARY 20 2017...
VALID TODAY AS OF 0400 PM LOCAL TIME.

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


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE
                VALUE   (LST)  VALUE       VALUE  FROM
                                                  NORMAL
...............................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         49    329 PM  70    1951  43      6
  MINIMUM         39    450 AM  -2    1985  28     11
  AVERAGE         44                        36      8

PRECIPITATION (IN)
  TODAY            0.01          1.77 1937   0.09  -0.08
  MONTH TO DATE    1.83                      1.80   0.03
  SINCE DEC 1      4.44                      4.85  -0.41
  SINCE JAN 1      1.83                      1.80   0.03

SNOWFALL (IN)
  TODAY            0.0           3.8  1975   0.2   -0.2
  MONTH TO DATE    0.4                       3.2   -2.8
  SINCE JUL 1      0.4                       6.0   -5.6
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  TODAY           21                               -8
  MONTH TO DATE  479                             -101
  SINCE DEC 1   1189                             -177
  SINCE JUL 1   1676                             -385

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


WIND (MPH)
  HIGHEST WIND SPEED    12   HIGHEST WIND DIRECTION     S (180)
  HIGHEST GUST SPEED    14   HIGHEST GUST DIRECTION     S (180)
  AVERAGE WIND SPEED     2.5




RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93
 LOWEST     76
 AVERAGE    85

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


THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   43        70      1959
 MINIMUM TEMPERATURE (F)   28        -4      1985


SUNRISE AND SUNSET
JANUARY 20 2017.......SUNRISE   723 AM EST   SUNSET   516 PM EST
JANUARY 21 2017.......SUNRISE   722 AM EST   SUNSET   517 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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