Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 210528
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1225 AM EST SAT JAN 21 2017


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR JANUARY 20 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         49    329 PM  70    1951  43      6       31
  MINIMUM         39    450 AM  -2    1985  28     11       19
  AVERAGE         44                        36      8       25

PRECIPITATION (IN)
  YESTERDAY        0.01          1.77 1937   0.09  -0.08     0.03
  MONTH TO DATE    1.83                      1.80   0.03     1.20
  SINCE DEC 1      4.44                      4.85  -0.41     6.04
  SINCE JAN 1      1.83                      1.80   0.03     1.20

SNOWFALL (IN)
  YESTERDAY        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
  YESTERDAY       21                        29     -8       40
  MONTH TO DATE  479                       580   -101      576
  SINCE DEC 1   1189                      1366   -177      997
  SINCE JUL 1   1676                      2061   -385     1532

 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    12   HIGHEST WIND DIRECTION     S (180)
  HIGHEST GUST SPEED    14   HIGHEST GUST DIRECTION     S (180)
  AVERAGE WIND SPEED     3.6


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           800 PM
 LOWEST     76          1100 AM
 AVERAGE    88

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


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


SUNRISE AND SUNSET
JANUARY 21 2017.......SUNRISE   722 AM EST   SUNSET   517 PM EST
JANUARY 22 2017.......SUNRISE   722 AM EST   SUNSET   518 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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