786
CDUS41 KLWX 042130
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
430 PM EST SUN JAN 04 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 4 2026
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 42 3:37 PM 74 1997 43 -1 31
MINIMUM 29 7:52 AM 5 1979 26 3 24
AVERAGE 36 34 2 28
PRECIPITATION (IN)
TODAY 0.00 0.89 1992 0.09 -0.09 0.00
MONTH TO DATE 0.01 0.37 -0.36 0.05
SINCE DEC 1 1.31 3.67 -2.36 3.39
SINCE JAN 1 0.01 0.37 -0.36 0.05
SNOWFALL (IN)
TODAY 0.0 1.8 1980 0.1 -0.1 0.0
MONTH TO DATE 0.1 0.5 -0.4 0.2
SINCE DEC 1 2.1 3.3 -1.2 0.3
SINCE JUL 1 2.1 3.6 -1.5 0.3
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 29 30 -1 37
MONTH TO DATE 135 120 15 117
SINCE DEC 1 1069 965 104 946
SINCE JUL 1 1862 1865 -3 1614
COOLING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 0 0 0 0
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 4.1
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 61 1:00 AM
LOWEST 32 12:00 PM
AVERAGE 47
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 43 69 1997
MINIMUM TEMPERATURE (F) 26 5 1970
SUNRISE AND SUNSET
JANUARY 4 2026.......SUNRISE 7:29 AM EST SUNSET 5:01 PM EST
JANUARY 5 2026.......SUNRISE 7:29 AM EST SUNSET 5:02 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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