Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 170525
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1225 AM EST WED JAN 17 2018


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR JANUARY 16 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2018


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         43    303 PM  73    1953  43      0       46
  MINIMUM         30    938 AM   2    1893  28      2       38
  AVERAGE         37                        36      1       42

PRECIPITATION (IN)
  YESTERDAY        0.00          1.00 1909   0.09  -0.09     0.01
  MONTH TO DATE    0.64                      1.44  -0.80     1.61
  SINCE DEC 1      1.14                      4.49  -3.35     4.22
  SINCE JAN 1      0.64                      1.44  -0.80     1.61

SNOWFALL (IN)
  YESTERDAY        0.0           2.2  1965   0.2   -0.2
                                      1959
  MONTH TO DATE    0.8                       2.4   -1.6
  SINCE JUL 1      2.7                       5.2   -2.5
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       28                        29     -1       23
  MONTH TO DATE  562                       464     98      409
  SINCE DEC 1   1354                      1250    104     1119
  SINCE JUL 1   1903                      1945    -42     1606

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


WIND (MPH)
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION    NW (330)
  HIGHEST GUST SPEED    16   HIGHEST GUST DIRECTION    NW (330)
  AVERAGE WIND SPEED     3.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 1.0


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    92          1200 AM
 LOWEST     50           800 PM
 AVERAGE    71

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


THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   43        74      1943
 MINIMUM TEMPERATURE (F)   28        -5      1982


SUNRISE AND SUNSET
JANUARY 17 2018.......SUNRISE   724 AM EST   SUNSET   513 PM EST
JANUARY 18 2018.......SUNRISE   724 AM EST   SUNSET   514 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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