338
CDUS41 KLWX 010744
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
244 AM EST THU JAN 01 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 31 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 10:19 PM 73 1992 43 -8 61
MINIMUM 19 8:24 AM 1 1993 27 -8 31
AVERAGE 27 35 -8 46
PRECIPITATION (IN)
YESTERDAY 0.00 1.90 1975 0.09 -0.09 0.36
MONTH TO DATE 1.30 3.30 -2.00 3.34
SINCE DEC 1 1.30 3.30 -2.00 3.34
SINCE JAN 1 30.18 43.24 -13.06 34.37
SNOWFALL (IN)
YESTERDAY 0.0 8.5 1970 0.1 -0.1 0.0
MONTH TO DATE 2.0 2.8 -0.8 0.1
SINCE DEC 1 2.0 2.8 -0.8 0.1
SINCE JUL 1 2.0 3.1 -1.1 0.1
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 38 30 8 19
MONTH TO DATE 934 846 88 829
SINCE DEC 1 934 846 88 829
SINCE JUL 1 1727 1746 -19 1497
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 14 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 5.2
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 65 7:00 AM
LOWEST 41 12:00 PM
AVERAGE 53
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 43 68 2005
MINIMUM TEMPERATURE (F) 27 -6 1968
SUNRISE AND SUNSET
JANUARY 1 2026.......SUNRISE 7:29 AM EST SUNSET 4:58 PM EST
JANUARY 2 2026.......SUNRISE 7:29 AM EST SUNSET 4:59 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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