Climatological Report (Daily)
Issued by NWS Sterling, VA

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
396
CDUS41 KLWX 220524
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
124 AM EDT FRI SEP 22 2017


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 21 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1960 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         85    412 PM  92    1998  77      8       84
                                      1965
  MINIMUM         60    301 AM  33    1962  54      6       66
  AVERAGE         73                        66      7       75

PRECIPITATION (IN)
  YESTERDAY        0.00          2.59 1979   0.13  -0.13     0.00
  MONTH TO DATE    1.75                      2.74  -0.99     0.40
  SINCE SEP 1      1.75                      2.74  -0.99     0.40
  SINCE JAN 1     34.75                     30.74   4.01    28.40

SNOWFALL (IN)
  YESTERDAY        0.0          MM      MM   0.0    0.0
  MONTH TO DATE    0.0                       0.0    0.0
  SINCE JUL 1      T                         0.0    0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        0                         3     -3        0
  MONTH TO DATE   30                        21      9        0
  SINCE SEP 1     30                        21      9        0
  SINCE JUL 1     31                        23      8        0

 COOLING
  YESTERDAY        8                         3      5       10
  MONTH TO DATE   88                       120    -32      233
  SINCE SEP 1     88                       120    -32      233
  SINCE JAN 1   1149                      1136     13     1496
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    12   HIGHEST WIND DIRECTION    NE (30)
  HIGHEST GUST SPEED    16   HIGHEST GUST DIRECTION    NE (30)
  AVERAGE WIND SPEED     3.3


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.4


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100          1200 AM
 LOWEST     44           200 PM
 AVERAGE    72

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   77        94      2010
                                             1980
                                             1970
 MINIMUM TEMPERATURE (F)   54        35      1962


SUNRISE AND SUNSET
SEPTEMBER 22 2017.....SUNRISE   658 AM EDT   SUNSET   706 PM EDT
SEPTEMBER 23 2017.....SUNRISE   659 AM EDT   SUNSET   705 PM EDT


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




$$




USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.