Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 212132
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
532 PM EDT SAT OCT 21 2017


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR OCTOBER 21 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         78    309 PM  85    1947  67     11
  MINIMUM         52    628 AM  30    1974  49      3
                                      1952
  AVERAGE         65                        58      7

PRECIPITATION (IN)
  TODAY            0.00          2.02 1904   0.11  -0.11
  MONTH TO DATE    0.83                      2.30  -1.47
  SINCE SEP 1      2.26                      6.02  -3.76
  SINCE JAN 1     31.91                     32.42  -0.51

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                               -8
  MONTH TO DATE   31                              -81
  SINCE SEP 1     37                              -99
  SINCE JUL 1     37                              -99

 COOLING
  TODAY            0                               -1
  MONTH TO DATE   85                               52
  SINCE SEP 1    326                               91
  SINCE JAN 1   1817                              271
...............................................................


WIND (MPH)
  HIGHEST WIND SPEED     8   HIGHEST WIND DIRECTION    NW (330)
  HIGHEST GUST SPEED     9   HIGHEST GUST DIRECTION    NW (330)
  AVERAGE WIND SPEED     3.3




RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93
 LOWEST     27
 AVERAGE    60

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


THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   66        84      1979
                                             1920
 MINIMUM TEMPERATURE (F)   48        29      1895


SUNRISE AND SUNSET
OCTOBER 21 2017.......SUNRISE   724 AM EDT   SUNSET   621 PM EDT
OCTOBER 22 2017.......SUNRISE   725 AM EDT   SUNSET   620 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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