Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 220528
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1228 AM EST MON JAN 22 2018


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 21 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1960 TO 2018


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         63R   259 PM  62    2006  43     20       49
  MINIMUM         28    542 AM -16    1984  24      4       46
  AVERAGE         46                        33     13       48

PRECIPITATION (IN)
  YESTERDAY        T             0.94 1974   0.09  -0.09      T
  MONTH TO DATE    1.51                      1.77  -0.26     1.83
  SINCE DEC 1      2.28                      4.73  -2.45     4.19
  SINCE JAN 1      1.51                      1.77  -0.26     1.83

SNOWFALL (IN)
  YESTERDAY        0.0           8.5  2014   0.2   -0.2
  MONTH TO DATE    0.4                       4.5   -4.1
  SINCE JUL 1      5.0                       8.5   -3.5
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       19                        32    -13       17
  MONTH TO DATE  755                       672     83      551
  SINCE DEC 1   1678                      1554    124     1374
  SINCE JUL 1   2472                      2470      2     2101

 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    12   HIGHEST WIND DIRECTION     S (190)
  HIGHEST GUST SPEED    14   HIGHEST GUST DIRECTION     S (190)
  AVERAGE WIND SPEED     3.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.7


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    92           200 AM
 LOWEST     48           300 PM
 AVERAGE    70

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   43        68      1986
 MINIMUM TEMPERATURE (F)   24       -18      1984


SUNRISE AND SUNSET
JANUARY 22 2018.......SUNRISE   724 AM EST   SUNSET   520 PM EST
JANUARY 23 2018.......SUNRISE   723 AM EST   SUNSET   521 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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