Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 200527
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
126 AM EDT FRI OCT 20 2017


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR OCTOBER 19 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         72    233 PM  88    1938  67      5       87
  MINIMUM         49    510 AM  30    1880  49      0       65
  AVERAGE         61                        58      3       76

PRECIPITATION (IN)
  YESTERDAY        0.00          2.73 1906   0.11  -0.11      T
  MONTH TO DATE    0.83                      2.09  -1.26     0.59
  SINCE SEP 1      2.26                      5.81  -3.55     3.09
  SINCE JAN 1     31.91                     32.21  -0.30    28.02

SNOWFALL (IN)
  YESTERDAY        0.0           0.1  1940   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        4                         7     -3        0
  MONTH TO DATE   31                        96    -65       38
  SINCE SEP 1     37                       120    -83       39
  SINCE JUL 1     37                       120    -83       39

 COOLING
  YESTERDAY        0                         1     -1       11
  MONTH TO DATE   84                        31     53       44
  SINCE SEP 1    325                       233     92      382
  SINCE JAN 1   1816                      1544    272     1968
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    13   HIGHEST WIND DIRECTION     S (170)
  HIGHEST GUST SPEED    14   HIGHEST GUST DIRECTION     S (170)
  AVERAGE WIND SPEED     6.5


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.3


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           500 AM
 LOWEST     44           200 PM
 AVERAGE    69

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


THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   67        86      1969
 MINIMUM TEMPERATURE (F)   49        31      1972


SUNRISE AND SUNSET
OCTOBER 20 2017.......SUNRISE   723 AM EDT   SUNSET   622 PM EDT
OCTOBER 21 2017.......SUNRISE   724 AM EDT   SUNSET   621 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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