676
CDUS41 KLWX 070731
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
231 AM EST SUN DEC 07 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 6 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 42 1:25 PM 79 1998 49 -7 38
MINIMUM 27 11:31 PM 9 2002 31 -4 22
AVERAGE 35 40 -5 30
PRECIPITATION (IN)
YESTERDAY T 1.03 2016 0.12 -0.12 0.00
MONTH TO DATE 0.78 0.69 0.09 T
SINCE DEC 1 0.78 0.69 0.09 T
SINCE JAN 1 29.66 40.63 -10.97 31.03
SNOWFALL (IN)
YESTERDAY T 1.0 2003 0.1 -0.1 0.0
MONTH TO DATE 1.3 0.4 0.9 T
SINCE DEC 1 1.3 0.4 0.9 T
SINCE JUL 1 1.3 0.7 0.6 T
SNOW DEPTH T
DEGREE DAYS
HEATING
YESTERDAY 30 25 5 35
MONTH TO DATE 186 147 39 201
SINCE DEC 1 186 147 39 201
SINCE JUL 1 979 1047 -68 869
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 1330 1231 99 1586
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 8 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 10 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 2.3
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT SNOW
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 9:00 PM
LOWEST 73 1:00 PM
AVERAGE 87
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 49 77 1998
MINIMUM TEMPERATURE (F) 31 1 2002
SUNRISE AND SUNSET
DECEMBER 7 2025......SUNRISE 7:15 AM EST SUNSET 4:47 PM EST
DECEMBER 8 2025......SUNRISE 7:16 AM EST SUNSET 4:47 PM EST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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