Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 202136
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
535 PM EDT WED SEP 20 2017


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR SEPTEMBER 20 2017...
VALID TODAY AS OF 0500 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE
                VALUE   (LST)  VALUE       VALUE  FROM
                                                  NORMAL
...............................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         88    322 PM  94    1895  78     10
  MINIMUM         70    635 AM  41    1916  61      9
  AVERAGE         79                        69     10

PRECIPITATION (IN)
  TODAY            0.00          1.43 1938   0.13  -0.13
  MONTH TO DATE    1.43                      2.42  -0.99
  SINCE SEP 1      1.43                      2.42  -0.99
  SINCE JAN 1     31.08                     28.82   2.26

SNOWFALL (IN)
  TODAY            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
  TODAY            0                               -1
  MONTH TO DATE    5                                0
  SINCE SEP 1      5                                0
  SINCE JUL 1      5                                0

 COOLING
  TODAY           14                                9
  MONTH TO DATE  132                              -32
  SINCE SEP 1    132                              -32
  SINCE JAN 1   1623                              148
...............................................................


WIND (MPH)
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION    NW (320)
  HIGHEST GUST SPEED    18   HIGHEST GUST DIRECTION    NW (320)
  AVERAGE WIND SPEED     9.3




RELATIVE HUMIDITY (PERCENT)
 HIGHEST    84
 LOWEST     43
 AVERAGE    64

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


THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   78        96      1895
 MINIMUM TEMPERATURE (F)   61        41      1956


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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