Climatological Report (Daily)
Issued by NWS Sterling, VA

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
CDUS41 KLWX 182136
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
436 PM EST THU DEC 18 2014


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 18 2014...
VALID TODAY AS OF 0400 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1962 TO 2014


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         38    232 PM  76    2006  45     -7       42
  MINIMUM         31    733 AM   3    1989  26      5       25
  AVERAGE         35                        36     -1       34

PRECIPITATION (IN)
  TODAY            0.00          2.92 1977   0.09  -0.09      T
  MONTH TO DATE    2.07                      1.86   0.21     3.00
  SINCE DEC 1      2.07                      1.86   0.21     3.00
  SINCE JAN 1     44.88                     40.44   4.44    42.76

SNOWFALL (IN)
  TODAY            0.0           2.2  2009   0.1   -0.1
  MONTH TO DATE    T                         1.8   -1.8
  SINCE JUL 1      1.6                       2.3   -0.7
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  TODAY           30                        29      1       31
  MONTH TO DATE  458                       484    -26      504
  SINCE DEC 1    458                       484    -26      504
  SINCE JUL 1   1452                      1400     52     1468

 COOLING
  TODAY            0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1    968                      1178   -210     1272
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    23   HIGHEST WIND DIRECTION    NW (300)
  HIGHEST GUST SPEED    29   HIGHEST GUST DIRECTION    NW (300)
  AVERAGE WIND SPEED    13.9


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.6


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    64          1200 AM
 LOWEST     52          1100 AM
 AVERAGE    58

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   45        63      1967
 MINIMUM TEMPERATURE (F)   26        -2      1989


SUNRISE AND SUNSET
DECEMBER 18 2014......SUNRISE   723 AM EST   SUNSET   450 PM EST
DECEMBER 19 2014......SUNRISE   724 AM EST   SUNSET   450 PM EST


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




$$




USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.