AFOS product CLIIAD
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CDUS41 KLWX 012209 CCA
CLIIAD

CLIMATE REPORT...CORRECTED
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
609 PM EDT THU OCT 01 2020

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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 30 2020...

CLIMATE NORMAL PERIOD: 1981 TO 2010
CLIMATE RECORD PERIOD: 1960 TO 2020


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
...................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         71   3:48 PM  92    1986  74     -3       73
  MINIMUM         52   6:09 AM  35    1993  50      2       68
  AVERAGE         62                        62      0       71

PRECIPITATION (IN)
  YESTERDAY        0.11          4.74 2010   0.14  -0.03     0.07
  MONTH TO DATE    2.28                      3.92  -1.64     0.41
  SINCE SEP 1      2.28                      3.92  -1.64     0.41
  SINCE JAN 1     36.50                     31.92   4.58    30.25

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

DEGREE DAYS
 HEATING
  YESTERDAY        3                         5     -2        0
  MONTH TO DATE   61                        55      6        5
  SINCE SEP 1     61                        55      6        5
  SINCE JUL 1     61                        57      4        5

 COOLING
  YESTERDAY        0                         2     -2        6
  MONTH TO DATE  135                       141     -6      238
  SINCE SEP 1    135                       141     -6      238
  SINCE JAN 1   1387                      1157    230     1473
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION     S (200)
  HIGHEST GUST SPEED    27   HIGHEST GUST DIRECTION     S (200)
  AVERAGE WIND SPEED     8.9


SKY COVER
  AVERAGE SKY COVER 0.3


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    97           3:00 AM
 LOWEST     44           2:00 PM
 AVERAGE    71

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   73        90      1986
 MINIMUM TEMPERATURE (F)   50        31      1993


SUNRISE AND SUNSET
OCTOBER  1 2020.......SUNRISE   7:06 AM EDT   SUNSET   6:52 PM EDT
OCTOBER  2 2020.......SUNRISE   7:07 AM EDT   SUNSET   6:50 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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