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 WED SEP 20 2017


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR SEPTEMBER 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         84    316 PM  96    1895  78      6       78
  MINIMUM         68    531 AM  44    1916  61      7       73
  AVERAGE         76                        70      6       76

PRECIPITATION (IN)
  YESTERDAY        0.00          1.23 1875   0.14  -0.14     0.46
  MONTH TO DATE    1.43                      2.29  -0.86     0.51
  SINCE SEP 1      1.43                      2.29  -0.86     0.51
  SINCE JAN 1     31.08                     28.69   2.39    25.44

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                         4      1        0
  SINCE SEP 1      5                         4      1        0
  SINCE JUL 1      5                         4      1        0

 COOLING
  YESTERDAY       11                         6      5       11
  MONTH TO DATE  118                       159    -41      265
  SINCE SEP 1    118                       159    -41      265
  SINCE JAN 1   1609                      1470    139     1851
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    18   HIGHEST WIND DIRECTION     N (360)
  HIGHEST GUST SPEED    22   HIGHEST GUST DIRECTION     N (340)
  AVERAGE WIND SPEED    11.8


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    90          1200 AM
 LOWEST     58           200 PM
 AVERAGE    74

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


THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   78        94      1895
 MINIMUM TEMPERATURE (F)   61        41      1916


SUNRISE AND SUNSET
SEPTEMBER 20 2017.....SUNRISE   654 AM EDT   SUNSET   708 PM EDT
SEPTEMBER 21 2017.....SUNRISE   655 AM EDT   SUNSET   706 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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