890
CDUS41 KLWX 310726
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
226 AM EST WED DEC 31 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 30 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 35 1:40 PM 67 1990 44 -9 61
MINIMUM 21 11:01 PM 4 1963 27 -6 33
AVERAGE 28 35 -7 47
PRECIPITATION (IN)
YESTERDAY 0.00 0.87 1969 0.09 -0.09 0.00
MONTH TO DATE 1.30 3.21 -1.91 2.98
SINCE DEC 1 1.30 3.21 -1.91 2.98
SINCE JAN 1 30.18 43.15 -12.97 34.01
SNOWFALL (IN)
YESTERDAY 0.0 0.9 1977 0.2 -0.2 0.0
MONTH TO DATE 2.0 2.7 -0.7 0.1
SINCE DEC 1 2.0 2.7 -0.7 0.1
SINCE JUL 1 2.0 3.0 -1.0 0.1
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 37 30 7 18
MONTH TO DATE 896 816 80 810
SINCE DEC 1 896 816 80 810
SINCE JUL 1 1689 1716 -27 1478
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
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 36 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 50 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 18.5
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 55 11:00 PM
LOWEST 35 2:00 PM
AVERAGE 45
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 43 73 1992
MINIMUM TEMPERATURE (F) 27 1 1993
SUNRISE AND SUNSET
DECEMBER 31 2025......SUNRISE 7:28 AM EST SUNSET 4:58 PM EST
JANUARY 1 2026.......SUNRISE 7:29 AM EST SUNSET 4:58 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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