620
CDUS41 KLWX 100727
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
227 AM EST SAT JAN 10 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 9 2026
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)
YESTERDAY
MAXIMUM 54 11:10 PM 64 2008 42 12 31
MINIMUM 39 6:34 AM -8 1970 26 13 18
AVERAGE 47 34 13 25
PRECIPITATION (IN)
YESTERDAY 0.01 1.76 2024 0.09 -0.08 0.00
MONTH TO DATE 0.02 0.83 -0.81 0.69
SINCE DEC 1 1.32 4.13 -2.81 4.03
SINCE JAN 1 0.02 0.83 -0.81 0.69
SNOWFALL (IN)
YESTERDAY 0.0 3.5 1997 0.2 -0.2 0.0
MONTH TO DATE 0.1 1.3 -1.2 6.2
SINCE DEC 1 2.1 4.1 -2.0 6.3
SINCE JUL 1 2.1 4.4 -2.3 6.3
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 18 31 -13 40
MONTH TO DATE 254 275 -21 309
SINCE DEC 1 1188 1120 68 1138
SINCE JUL 1 1981 2020 -39 1806
COOLING
YESTERDAY 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
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WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 7.7
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 9:00 PM
LOWEST 70 12:00 AM
AVERAGE 82
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 42 59 2016
MINIMUM TEMPERATURE (F) 25 0 1982
SUNRISE AND SUNSET
JANUARY 10 2026.......SUNRISE 7:28 AM EST SUNSET 5:07 PM EST
JANUARY 11 2026.......SUNRISE 7:28 AM EST SUNSET 5:08 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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