924
CDUS41 KLWX 212125
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
425 PM EST SUN DEC 21 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 21 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 49 2:31 PM 70 2013 45 4 38
MINIMUM 31 6:15 AM 4 1989 28 3 28
AVERAGE 40 37 3 33
PRECIPITATION (IN)
TODAY 0.00 1.15 1973 0.10 -0.10 0.00
MONTH TO DATE 1.24 2.33 -1.09 2.35
SINCE DEC 1 1.24 2.33 -1.09 2.35
SINCE JAN 1 30.12 42.27 -12.15 33.38
SNOWFALL (IN)
TODAY 0.0 5.8 1962 0.1 -0.1 0.0
MONTH TO DATE 2.0 1.7 0.3 T
SINCE DEC 1 2.0 1.7 0.3 T
SINCE JUL 1 2.0 2.0 -0.0 T
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 25 28 -3 32
MONTH TO DATE 667 551 116 575
SINCE DEC 1 667 551 116 575
SINCE JUL 1 1460 1451 9 1243
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 28 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 39 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 11.2
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 63 6:00 AM
LOWEST 22 3:00 PM
AVERAGE 43
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 45 71 2013
MINIMUM TEMPERATURE (F) 28 2 1989
SUNRISE AND SUNSET
DECEMBER 21 2025......SUNRISE 7:25 AM EST SUNSET 4:51 PM EST
DECEMBER 22 2025......SUNRISE 7:26 AM EST SUNSET 4:52 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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