Climatological Report (Daily)
Issued by NWS Sterling, VA

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742
CDUS41 KLWX 190522
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
122 AM EDT THU OCT 19 2017


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR OCTOBER 18 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         71    310 PM  85    1938  68      3       82
                                      1881
  MINIMUM         45    543 AM  34    1876  50     -5       63
  AVERAGE         58                        59     -1       73

PRECIPITATION (IN)
  YESTERDAY        0.00          1.67 1990   0.11  -0.11     0.00
  MONTH TO DATE    0.83                      1.98  -1.15     0.59
  SINCE SEP 1      2.26                      5.70  -3.44     3.09
  SINCE JAN 1     31.91                     32.10  -0.19    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        7                         7      0        0
  MONTH TO DATE   27                        89    -62       38
  SINCE SEP 1     33                       113    -80       39
  SINCE JUL 1     33                       113    -80       39

 COOLING
  YESTERDAY        0                         1     -1        8
  MONTH TO DATE   84                        30     54       33
  SINCE SEP 1    325                       232     93      371
  SINCE JAN 1   1816                      1543    273     1957
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    12   HIGHEST WIND DIRECTION     S (190)
  HIGHEST GUST SPEED    14   HIGHEST GUST DIRECTION     S (190)
  AVERAGE WIND SPEED     5.3


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.1


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    83          1100 PM
 LOWEST     40           200 PM
 AVERAGE    62

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


THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   67        88      1938
 MINIMUM TEMPERATURE (F)   49        30      1880


SUNRISE AND SUNSET
OCTOBER 19 2017.......SUNRISE   722 AM EDT   SUNSET   624 PM EDT
OCTOBER 20 2017.......SUNRISE   723 AM EDT   SUNSET   622 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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