702
CDUS41 KLWX 042125
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
425 PM EST THU DEC 04 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 4 2025
VALID TODAY AS OF 0400 PM LOCAL TIME.
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)
TODAY
MAXIMUM 43 1:59 PM 75 1998 50 -7 43
MINIMUM 21 3:31 AM 10 1966 31 -10 17
AVERAGE 32 40 -8 30
PRECIPITATION (IN)
TODAY 0.00 1.18 1993 0.11 -0.11 0.00
MONTH TO DATE 0.73 0.45 0.28 T
SINCE DEC 1 0.73 0.45 0.28 T
SINCE JAN 1 29.61 40.39 -10.78 31.03
SNOWFALL (IN)
TODAY 0.0 T 2014 0.0 0.0 0.0
2016
2019
MONTH TO DATE 0.0 0.2 -0.2 T
SINCE DEC 1 0.0 0.2 -0.2 T
SINCE JUL 1 T 0.5 -0.5 T
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 33 25 8 35
MONTH TO DATE 121 97 24 136
SINCE DEC 1 121 97 24 136
SINCE JUL 1 914 997 -83 804
COOLING
TODAY 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 25 HIGHEST WIND DIRECTION NW (320)
HIGHEST GUST SPEED 36 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 6.2
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 4:00 AM
LOWEST 46 3:00 PM
AVERAGE 71
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 49 77 2001
MINIMUM TEMPERATURE (F) 31 12 1966
SUNRISE AND SUNSET
DECEMBER 4 2025......SUNRISE 7:13 AM EST SUNSET 4:47 PM EST
DECEMBER 5 2025......SUNRISE 7:14 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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