Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 180522
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
122 AM EDT WED OCT 18 2017


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR OCTOBER 17 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         64    251 PM  86    1938  68     -4       82
                                      1908
  MINIMUM         46    609 AM  33    1893  50     -4       59
                                      1886
  AVERAGE         55                        59     -4       71

PRECIPITATION (IN)
  YESTERDAY        0.00          2.52 1932   0.10  -0.10     0.00
  MONTH TO DATE    0.83                      1.87  -1.04     0.59
  SINCE SEP 1      2.26                      5.59  -3.33     3.09
  SINCE JAN 1     31.91                     31.99  -0.08    28.02

SNOWFALL (IN)
  YESTERDAY        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
  YESTERDAY       10                         7      3        0
  MONTH TO DATE   20                        82    -62       38
  SINCE SEP 1     26                       106    -80       39
  SINCE JUL 1     26                       106    -80       39

 COOLING
  YESTERDAY        0                         1     -1        6
  MONTH TO DATE   84                        29     55       25
  SINCE SEP 1    325                       231     94      363
  SINCE JAN 1   1816                      1542    274     1949
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION     N (10)
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION     N (10)
  AVERAGE WIND SPEED     7.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.1


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    71           600 AM
 LOWEST     30           400 PM
 AVERAGE    51

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


THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   68        85      1938
                                             1881
 MINIMUM TEMPERATURE (F)   50        34      1876


SUNRISE AND SUNSET
OCTOBER 18 2017.......SUNRISE   721 AM EDT   SUNSET   625 PM EDT
OCTOBER 19 2017.......SUNRISE   722 AM EDT   SUNSET   624 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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