299
CDUS41 KLWX 200733
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
233 AM EST SAT DEC 20 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 19 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 59 6:48 AM 63 1967 46 13 46
MINIMUM 33 8:23 PM -2 1989 28 5 34
AVERAGE 46 37 9 40
PRECIPITATION (IN)
YESTERDAY 0.24 1.34 2009 0.10 0.14 0.00
MONTH TO DATE 1.24 2.12 -0.88 2.35
SINCE DEC 1 1.24 2.12 -0.88 2.35
SINCE JAN 1 30.12 42.06 -11.94 33.38
SNOWFALL (IN)
YESTERDAY 0.0 16.0 2009 0.1 -0.1 0.0
MONTH TO DATE 2.0 1.6 0.4 T
SINCE DEC 1 2.0 1.6 0.4 T
SINCE JUL 1 2.0 1.9 0.1 T
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 19 28 -9 25
MONTH TO DATE 612 495 117 515
SINCE DEC 1 612 495 117 515
SINCE JUL 1 1405 1395 10 1183
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 45 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 15.1
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HEAVY RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 6:00 AM
LOWEST 40 12:00 PM
AVERAGE 67
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 45 64 1988
MINIMUM TEMPERATURE (F) 28 8 1991
SUNRISE AND SUNSET
DECEMBER 20 2025......SUNRISE 7:25 AM EST SUNSET 4:51 PM EST
DECEMBER 21 2025......SUNRISE 7:25 AM EST SUNSET 4:51 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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