238
CDUS41 KLWX 110728
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
228 AM EST THU DEC 11 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 10 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 45 2:48 PM 70 1966 48 -3 55
MINIMUM 29 3:49 AM 4 1989 30 -1 38
AVERAGE 37 39 -2 47
PRECIPITATION (IN)
YESTERDAY T 2.26 1992 0.11 -0.11 0.01
MONTH TO DATE 0.78 1.14 -0.36 0.08
SINCE DEC 1 0.78 1.14 -0.36 0.08
SINCE JAN 1 29.66 41.08 -11.42 31.11
SNOWFALL (IN)
YESTERDAY 0.0 2.6 1992 0.0 0.0 0.0
MONTH TO DATE 1.3 0.7 0.6 T
SINCE DEC 1 1.3 0.7 0.6 T
SINCE JUL 1 1.3 1.0 0.3 T
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 28 26 2 18
MONTH TO DATE 321 250 71 285
SINCE DEC 1 321 250 71 285
SINCE JUL 1 1114 1150 -36 953
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 22 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION S (170)
AVERAGE WIND SPEED 10.5
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 85 7:00 AM
LOWEST 56 2:00 PM
AVERAGE 71
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 48 71 1979
MINIMUM TEMPERATURE (F) 30 3 1968
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.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page