Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 182125
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
524 PM EDT WED OCT 18 2017


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

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

PRECIPITATION (IN)
  TODAY            0.00          1.67 1990   0.11  -0.11
  MONTH TO DATE    0.83                      1.98  -1.15
  SINCE SEP 1      2.26                      5.70  -3.44
  SINCE JAN 1     31.91                     32.10  -0.19

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            7                                0
  MONTH TO DATE   27                              -62
  SINCE SEP 1     33                              -80
  SINCE JUL 1     33                              -80

 COOLING
  TODAY            0                               -1
  MONTH TO DATE   84                               54
  SINCE SEP 1    325                               93
  SINCE JAN 1   1816                              273
...............................................................


WIND (MPH)
  HIGHEST WIND SPEED    10   HIGHEST WIND DIRECTION     S (180)
  HIGHEST GUST SPEED    12   HIGHEST GUST DIRECTION     S (170)
  AVERAGE WIND SPEED     4.7




RELATIVE HUMIDITY (PERCENT)
 HIGHEST    82
 LOWEST     40
 AVERAGE    61

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


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


SUNRISE AND SUNSET
OCTOBER 18 2017.......SUNRISE   721 AM EDT   SUNSET   625 PM EDT
OCTOBER 19 2017.......SUNRISE   722 AM EDT   SUNSET   624 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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