516
CDUS41 KLWX 162121
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
421 PM EST TUE DEC 16 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 16 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 41 3:27 PM 72 1971 46 -5 48
MINIMUM 13 7:46 AM 9 2016 29 -16 35
AVERAGE 27 38 -11 42
PRECIPITATION (IN)
TODAY 0.00 1.30 2020 0.11 -0.11 0.24
MONTH TO DATE 0.87 1.81 -0.94 2.16
SINCE DEC 1 0.87 1.81 -0.94 2.16
SINCE JAN 1 29.75 41.75 -12.00 33.19
SNOWFALL (IN)
TODAY 0.0 5.2 1973 0.1 -0.1 0.0
MONTH TO DATE 2.0 1.3 0.7 T
SINCE DEC 1 2.0 1.3 0.7 T
SINCE JUL 1 2.0 1.6 0.4 T
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 38 27 11 23
MONTH TO DATE 538 411 127 450
SINCE DEC 1 538 411 127 450
SINCE JUL 1 1331 1311 20 1118
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 10 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 2.6
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 84 6:00 AM
LOWEST 29 2:00 PM
AVERAGE 57
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 46 70 1984
MINIMUM TEMPERATURE (F) 29 3 1989
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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