Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 240528
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1228 AM EST WED JAN 24 2018


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 23 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         64   1241 PM  72    1967  43     21       50
  MINIMUM         40   1132 PM  -4    1978  24     16       36
                                      1970
  AVERAGE         52                        33     19       43

PRECIPITATION (IN)
  YESTERDAY        0.13          1.88 2016   0.09   0.04     0.74
  MONTH TO DATE    1.64                      1.95  -0.31     2.64
  SINCE DEC 1      2.41                      4.91  -2.50     5.00
  SINCE JAN 1      1.64                      1.95  -0.31     2.64

SNOWFALL (IN)
  YESTERDAY        0.0          22.1  2016   0.2   -0.2
  MONTH TO DATE    0.4                       5.0   -4.6
  SINCE JUL 1      5.0                       9.0   -4.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       13                        32    -19       22
  MONTH TO DATE  776                       736     40      590
  SINCE DEC 1   1699                      1618     81     1413
  SINCE JUL 1   2493                      2534    -41     2140

 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    29   HIGHEST WIND DIRECTION    NW (300)
  HIGHEST GUST SPEED    40   HIGHEST GUST DIRECTION     S (160)
  AVERAGE WIND SPEED    12.5


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.6


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           500 AM
 LOWEST     41           400 PM
 AVERAGE    71

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   43        73      1967
 MINIMUM TEMPERATURE (F)   24        -2      1987


SUNRISE AND SUNSET
JANUARY 24 2018.......SUNRISE   722 AM EST   SUNSET   522 PM EST
JANUARY 25 2018.......SUNRISE   722 AM EST   SUNSET   523 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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