380
CDUS41 KLWX 300738
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
238 AM EST TUE DEC 30 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 29 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 60 12:14 PM 78 1984 44 16 67
MINIMUM 30 10:56 PM 7 1977 27 3 51
AVERAGE 45 35 10 59
PRECIPITATION (IN)
YESTERDAY T 1.27 2013 0.09 -0.09 0.12
MONTH TO DATE 1.30 3.12 -1.82 2.98
SINCE DEC 1 1.30 3.12 -1.82 2.98
SINCE JAN 1 30.18 43.06 -12.88 34.01
SNOWFALL (IN)
YESTERDAY 0.0 3.3 1962 0.1 -0.1 0.0
MONTH TO DATE 2.0 2.5 -0.5 0.1
SINCE DEC 1 2.0 2.5 -0.5 0.1
SINCE JUL 1 2.0 2.8 -0.8 0.1
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 20 30 -10 6
MONTH TO DATE 859 786 73 792
SINCE DEC 1 859 786 73 792
SINCE JUL 1 1652 1686 -34 1460
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 40 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 55 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 19.3
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 1:00 AM
LOWEST 23 3:00 PM
AVERAGE 58
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 44 67 1990
MINIMUM TEMPERATURE (F) 27 4 1963
SUNRISE AND SUNSET
DECEMBER 30 2025......SUNRISE 7:28 AM EST SUNSET 4:57 PM EST
DECEMBER 31 2025......SUNRISE 7:28 AM EST SUNSET 4:58 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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