Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 202129
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
429 PM EST MON FEB 20 2017


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR FEBRUARY 20 2017...
VALID TODAY AS OF 0400 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1962 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         65    356 PM  70    1971  48     17       67
  MINIMUM         44    455 AM  -2    1979  27     17       42
  AVERAGE         55                        37     18       55

PRECIPITATION (IN)
  TODAY            0.00          1.02 1996   0.10  -0.10     0.00
  MONTH TO DATE    0.25                      1.97  -1.72     2.57
  SINCE DEC 1      5.34                      7.61  -2.27    10.80
  SINCE JAN 1      2.98                      4.65  -1.67     7.04

SNOWFALL (IN)
  TODAY            0.0           0.7  1969   0.2   -0.2
  MONTH TO DATE    0.6                       5.9   -5.3
  SINCE JUL 1      1.6                      17.2  -15.6
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  TODAY           10                        28    -18       10
  MONTH TO DATE  453                       593   -140      616
  SINCE DEC 1   2062                      2461   -399     2152
  SINCE JUL 1   2789                      3377   -588     2902

 COOLING
  TODAY            0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        2
  SINCE JAN 1      0                         0      0        0
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    18   HIGHEST WIND DIRECTION     N (350)
  HIGHEST GUST SPEED    23   HIGHEST GUST DIRECTION    NW (320)
  AVERAGE WIND SPEED     9.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.2


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    83           500 AM
 LOWEST     31           300 PM
 AVERAGE    57

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   48        70      1997
 MINIMUM TEMPERATURE (F)   27         7      1972
                                             1968


SUNRISE AND SUNSET
FEBRUARY 20 2017......SUNRISE   654 AM EST   SUNSET   553 PM EST
FEBRUARY 21 2017......SUNRISE   653 AM EST   SUNSET   554 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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