Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 170525
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
125 AM EDT TUE OCT 17 2017


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR OCTOBER 16 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         73   1234 AM  89    1897  68      5       73
                                      1881
  MINIMUM         52   1159 PM  30    1876  50      2       53
  AVERAGE         63                        59      4       63

PRECIPITATION (IN)
  YESTERDAY        0.10          1.38 2002   0.11  -0.01     0.00
  MONTH TO DATE    0.83                      1.77  -0.94     0.59
  SINCE SEP 1      2.26                      5.49  -3.23     3.09
  SINCE JAN 1     31.91                     31.89   0.02    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        2                         6     -4        2
  MONTH TO DATE   10                        75    -65       38
  SINCE SEP 1     16                        99    -83       39
  SINCE JUL 1     16                        99    -83       39

 COOLING
  YESTERDAY        0                         1     -1        0
  MONTH TO DATE   84                        28     56       19
  SINCE SEP 1    325                       230     95      357
  SINCE JAN 1   1816                      1541    275     1943
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    26   HIGHEST WIND DIRECTION    NW (320)
  HIGHEST GUST SPEED    32   HIGHEST GUST DIRECTION    NW (330)
  AVERAGE WIND SPEED    13.3


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.7


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  RAIN
  LIGHT RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           400 AM
 LOWEST     34           400 PM
 AVERAGE    64

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


THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   68        86      1938
                                             1908
 MINIMUM TEMPERATURE (F)   50        33      1893
                                             1886


SUNRISE AND SUNSET
OCTOBER 17 2017.......SUNRISE   720 AM EDT   SUNSET   626 PM EDT
OCTOBER 18 2017.......SUNRISE   721 AM EDT   SUNSET   625 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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