Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 210600
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
200 AM EDT TUE MAY 21 2013


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 20 2013...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1962 TO 2013


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         81    339 PM  93    1996  76      5       82
  MINIMUM         66    656 AM  36    2002  52     14       51
  AVERAGE         74                        64     10       67

PRECIPITATION (IN)
  YESTERDAY        T             1.86 2005   0.15  -0.15     0.01
  MONTH TO DATE    2.34                      2.87  -0.53     1.77
  SINCE MAR 1      7.80                      9.72  -1.92     5.11
  SINCE JAN 1     13.13                     15.14  -2.01     9.20

SNOWFALL (IN)
  YESTERDAY        0.0          MM      MM   0.0    0.0
  MONTH TO DATE    0.0                       0.0    0.0
  SINCE JUL 1     12.7                      22.0   -9.3
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        0                         3     -3        0
  MONTH TO DATE  112                       103      9       32
  SINCE MAR 1   1162                      1085     77      707
  SINCE JUL 1   4526                      4675   -149     3761

 COOLING
  YESTERDAY        9                         3      6        2
  MONTH TO DATE   37                        33      4       45
  SINCE MAR 1     67                        53     14       73
  SINCE JAN 1     67                        53     14       73
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    13   HIGHEST WIND DIRECTION     S (190)
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION     S (180)
  AVERAGE WIND SPEED     5.4


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.8


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           200 AM
 LOWEST     58           500 PM
 AVERAGE    76

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   76        92      1996
 MINIMUM TEMPERATURE (F)   53        33      1992


SUNRISE AND SUNSET
MAY 21 2013...........SUNRISE   552 AM EDT   SUNSET   821 PM EDT
MAY 22 2013...........SUNRISE   551 AM EDT   SUNSET   822 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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