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Climatological Report (Daily)
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CDUS41 KLWX 172136
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
536 PM EDT THU OCT 17 2019


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 17 2019...
VALID TODAY AS OF 0500 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1960 TO 2019


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         58   1257 PM  84    2016  68    -10       68
  MINIMUM         49   1203 AM  31    1982  43      6       47
                                      1981
  AVERAGE         54                        56     -2       58

PRECIPITATION (IN)
  TODAY            0.00          1.11 1975   0.10  -0.10     0.00
  MONTH TO DATE    1.14                      1.78  -0.64     1.21
  SINCE SEP 1      1.55                      5.70  -4.15     8.57
  SINCE JAN 1     31.39                     33.70  -2.31    51.83

SNOWFALL (IN)
  TODAY            0.0          MM      MM   0.0    0.0
  MONTH TO DATE    0.0                       0.0    0.0
  SINCE JUL 1      0.0                       0.0    0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  TODAY           11                        10      1        7
  MONTH TO DATE   72                       130    -58       56
  SINCE SEP 1     77                       186   -109       69
  SINCE JUL 1     77                       188   -111       69

 COOLING
  TODAY            0                         0      0        0
  MONTH TO DATE   48                        16     32       97
  SINCE SEP 1    286                       157    129      338
  SINCE JAN 1   1521                      1173    348     1522
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    37   HIGHEST WIND DIRECTION     W (290)
  HIGHEST GUST SPEED    47   HIGHEST GUST DIRECTION    NW (300)
  AVERAGE WIND SPEED    15.9


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.7


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    61          1200 AM
 LOWEST     43          1000 AM
 AVERAGE    52

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   68        85      2016
 MINIMUM TEMPERATURE (F)   43        27      1982
                                             1976


SUNRISE AND SUNSET
OCTOBER 17 2019.......SUNRISE   721 AM EDT   SUNSET   629 PM EDT
OCTOBER 18 2019.......SUNRISE   722 AM EDT   SUNSET   627 PM EDT


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




$$
National Weather Service National Headquarters
