763
CDUS41 KLWX 150723
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
223 AM EST MON DEC 15 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 14 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 37 12:07 AM 69 2015 47 -10 41
MINIMUM 16 11:59 PM 3 1989 29 -13 24
AVERAGE 27 38 -11 33
PRECIPITATION (IN)
YESTERDAY 0.09 1.24 2020 0.11 -0.02 0.00
MONTH TO DATE 0.87 1.59 -0.72 1.59
SINCE DEC 1 0.87 1.59 -0.72 1.59
SINCE JAN 1 29.75 41.53 -11.78 32.62
SNOWFALL (IN)
YESTERDAY 0.7 3.6 2003 0.1 0.6 0.0
MONTH TO DATE 2.0 1.1 0.9 T
SINCE DEC 1 2.0 1.1 0.9 T
SINCE JUL 1 2.0 1.4 0.6 T
SNOW DEPTH 1
DEGREE DAYS
HEATING
YESTERDAY 38 27 11 32
MONTH TO DATE 456 357 99 398
SINCE DEC 1 456 357 99 398
SINCE JUL 1 1249 1257 -8 1066
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
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WIND (MPH)
HIGHEST WIND SPEED 31 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 41 HIGHEST GUST DIRECTION NW (330)
AVERAGE WIND SPEED 15.8
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
LIGHT SNOW
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 4:00 AM
LOWEST 38 3:00 PM
AVERAGE 67
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 47 71 1971
MINIMUM TEMPERATURE (F) 29 5 1989
SUNRISE AND SUNSET
DECEMBER 15 2025......SUNRISE 7:21 AM EST SUNSET 4:49 PM EST
DECEMBER 16 2025......SUNRISE 7:22 AM EST SUNSET 4:49 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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