Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 210537
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
129 AM EDT SAT APR 21 2018


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 20 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         60    357 PM  88    1985  68     -8       82
                                      1976
  MINIMUM         29    541 AM  28    1974  43    -14       55
  AVERAGE         45                        56    -11       69

PRECIPITATION (IN)
  YESTERDAY        0.00          2.90 2008   0.11  -0.11     0.33
  MONTH TO DATE    1.63                      2.31  -0.68     2.10
  SINCE MAR 1      3.42                      5.69  -2.27     6.22
  SINCE JAN 1      9.81                     11.11  -1.30     9.66

SNOWFALL (IN)
  YESTERDAY        0.0           T    1983   0.0    0.0
  MONTH TO DATE    T                         0.3   -0.3
  SINCE JUL 1     11.9                      22.0  -10.1
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       20                        10     10        0
  MONTH TO DATE  307                       253     54      138
  SINCE MAR 1   1086                       900    186      778
  SINCE JUL 1   4437                      4490    -53     3671

 COOLING
  YESTERDAY        0                         1     -1        4
  MONTH TO DATE   15                         8      7       27
  SINCE MAR 1     15                        11      4       29
  SINCE JAN 1     20                        11      9       29
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    23   HIGHEST WIND DIRECTION    NW (310)
  HIGHEST GUST SPEED    32   HIGHEST GUST DIRECTION    NW (330)
  AVERAGE WIND SPEED    10.7


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.0


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    72           600 AM
 LOWEST     26           300 PM
 AVERAGE    49

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   69        89      1985
 MINIMUM TEMPERATURE (F)   44        29      1983


SUNRISE AND SUNSET
APRIL 21 2018.........SUNRISE   625 AM EDT   SUNSET   753 PM EDT
APRIL 22 2018.........SUNRISE   623 AM EDT   SUNSET   754 PM EDT


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




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