796
CDUS41 KLWX 160722
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
222 AM EST TUE DEC 16 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 15 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 27 10:32 PM 71 1971 47 -20 39
MINIMUM 14 5:16 AM 5 1989 29 -15 32
AVERAGE 21 38 -17 36
PRECIPITATION (IN)
YESTERDAY 0.00 2.49 2018 0.11 -0.11 0.33
MONTH TO DATE 0.87 1.70 -0.83 1.92
SINCE DEC 1 0.87 1.70 -0.83 1.92
SINCE JAN 1 29.75 41.64 -11.89 32.95
SNOWFALL (IN)
YESTERDAY 0.0 4.7 1981 0.1 -0.1 T
MONTH TO DATE 2.0 1.2 0.8 T
SINCE DEC 1 2.0 1.2 0.8 T
SINCE JUL 1 2.0 1.5 0.5 T
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 44 27 17 29
MONTH TO DATE 500 384 116 427
SINCE DEC 1 500 384 116 427
SINCE JUL 1 1293 1284 9 1095
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 20 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 8.0
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 61 6:00 AM
LOWEST 44 3:00 PM
AVERAGE 53
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 46 72 1971
MINIMUM TEMPERATURE (F) 29 9 2016
SUNRISE AND SUNSET
DECEMBER 16 2025......SUNRISE 7:22 AM EST SUNSET 4:49 PM EST
DECEMBER 17 2025......SUNRISE 7:23 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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