Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 190542
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
142 AM EDT TUE SEP 19 2017


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR SEPTEMBER 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         77    503 PM  91    1927  79     -2       89
                                      1921
                                      1898
  MINIMUM         70   1159 PM  45    1937  62      8       71
  AVERAGE         74                        70      4       80

PRECIPITATION (IN)
  YESTERDAY        0.00          2.28 2003   0.13  -0.13     0.00
  MONTH TO DATE    1.43                      2.15  -0.72     0.05
  SINCE SEP 1      1.43                      2.15  -0.72     0.05
  SINCE JAN 1     31.08                     28.55   2.53    24.98

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        0                         1     -1        0
  MONTH TO DATE    5                         3      2        0
  SINCE SEP 1      5                         3      2        0
  SINCE JUL 1      5                         3      2        0

 COOLING
  YESTERDAY        9                         6      3       15
  MONTH TO DATE  107                       153    -46      254
  SINCE SEP 1    107                       153    -46      254
  SINCE JAN 1   1598                      1464    134     1840
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION    NE (60)
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION    NE (60)
  AVERAGE WIND SPEED     8.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.7


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93          1200 AM
 LOWEST     74          1100 AM
 AVERAGE    84

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


THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   78        96      1895
 MINIMUM TEMPERATURE (F)   61        44      1916


SUNRISE AND SUNSET
SEPTEMBER 19 2017.....SUNRISE   653 AM EDT   SUNSET   710 PM EDT
SEPTEMBER 20 2017.....SUNRISE   654 AM EDT   SUNSET   708 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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