373
CDUS41 KLWX 220727
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
227 AM EST MON DEC 22 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 21 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 49 2:31 PM 70 2013 45 4 38
MINIMUM 27 11:59 PM 4 1989 28 -1 28
AVERAGE 38 37 1 33
PRECIPITATION (IN)
YESTERDAY 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)
YESTERDAY 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
YESTERDAY 27 28 -1 32
MONTH TO DATE 669 551 118 575
SINCE DEC 1 669 551 118 575
SINCE JUL 1 1462 1451 11 1243
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 28 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 39 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 10.0
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 63 6:00 AM
LOWEST 22 3:00 PM
AVERAGE 43
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 45 71 2013
MINIMUM TEMPERATURE (F) 28 2 1989
SUNRISE AND SUNSET
DECEMBER 22 2025......SUNRISE 7:26 AM EST SUNSET 4:52 PM EST
DECEMBER 23 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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