816
CDUS41 KLWX 112125
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
425 PM EST THU DEC 11 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 11 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 41 1:36 AM 71 1979 48 -7 62
MINIMUM 33 7:39 AM 3 1968 30 3 34
AVERAGE 37 39 -2 48
PRECIPITATION (IN)
TODAY T 1.51 2024 0.12 -0.12 1.51
MONTH TO DATE 0.78 1.26 -0.48 1.59
SINCE DEC 1 0.78 1.26 -0.48 1.59
SINCE JAN 1 29.66 41.20 -11.54 32.62
SNOWFALL (IN)
TODAY T 0.5 1962 0.1 -0.1 0.0
2023
MONTH TO DATE 1.3 0.8 0.5 T
SINCE DEC 1 1.3 0.8 0.5 T
SINCE JUL 1 1.3 1.1 0.2 T
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 28 26 2 17
MONTH TO DATE 349 276 73 302
SINCE DEC 1 349 276 73 302
SINCE JUL 1 1142 1176 -34 970
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 31 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 43 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 15.4
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 78 12:00 AM
LOWEST 33 11:00 AM
AVERAGE 56
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 47 72 1979
MINIMUM TEMPERATURE (F) 30 9 1988
SUNRISE AND SUNSET
DECEMBER 11 2025......SUNRISE 7:19 AM EST SUNSET 4:48 PM EST
DECEMBER 12 2025......SUNRISE 7:19 AM EST SUNSET 4:48 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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