838
CDUS41 KLWX 140737
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
237 AM EST SUN DEC 14 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 13 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 44 3:45 PM 73 2015 47 -3 38
MINIMUM 20 12:46 AM 7 1988 29 -9 23
AVERAGE 32 38 -6 31
PRECIPITATION (IN)
YESTERDAY 0.00 1.47 1996 0.11 -0.11 0.00
MONTH TO DATE 0.78 1.48 -0.70 1.59
SINCE DEC 1 0.78 1.48 -0.70 1.59
SINCE JAN 1 29.66 41.42 -11.76 32.62
SNOWFALL (IN)
YESTERDAY 0.0 8.8 1966 0.1 -0.1 0.0
MONTH TO DATE 1.3 1.0 0.3 T
SINCE DEC 1 1.3 1.0 0.3 T
SINCE JUL 1 1.3 1.3 -0.0 T
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 33 27 6 34
MONTH TO DATE 418 330 88 366
SINCE DEC 1 418 330 88 366
SINCE JUL 1 1211 1230 -19 1034
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 10 HIGHEST WIND DIRECTION NE (50)
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION NE (60)
AVERAGE WIND SPEED 3.7
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 84 8:00 AM
LOWEST 60 4:00 PM
AVERAGE 72
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 47 69 2015
MINIMUM TEMPERATURE (F) 29 3 1989
SUNRISE AND SUNSET
DECEMBER 14 2025......SUNRISE 7:21 AM EST SUNSET 4:48 PM EST
DECEMBER 15 2025......SUNRISE 7:21 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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