Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 230524
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1223 AM EST TUE JAN 23 2018


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 22 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         66    325 PM  68    1986  43     23       50
  MINIMUM         48    808 AM -18    1984  24     24       46
  AVERAGE         57                        33     24       48

PRECIPITATION (IN)
  YESTERDAY        T             1.18 1987   0.09  -0.09     0.07
  MONTH TO DATE    1.51                      1.86  -0.35     1.90
  SINCE DEC 1      2.28                      4.82  -2.54     4.26
  SINCE JAN 1      1.51                      1.86  -0.35     1.90

SNOWFALL (IN)
  YESTERDAY        0.0          11.1  1987   0.3   -0.3
  MONTH TO DATE    0.4                       4.8   -4.4
  SINCE JUL 1      5.0                       8.8   -3.8
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        8                        32    -24       17
  MONTH TO DATE  763                       704     59      568
  SINCE DEC 1   1686                      1586    100     1391
  SINCE JUL 1   2480                      2502    -22     2118

 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    18   HIGHEST WIND DIRECTION     S (190)
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION     S (200)
  AVERAGE WIND SPEED     8.3


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.8


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    80           800 AM
 LOWEST     44           200 PM
 AVERAGE    62

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   43        72      1967
 MINIMUM TEMPERATURE (F)   24        -4      1978
                                             1970


SUNRISE AND SUNSET
JANUARY 23 2018.......SUNRISE   723 AM EST   SUNSET   521 PM EST
JANUARY 24 2018.......SUNRISE   722 AM EST   SUNSET   522 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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