668
CDUS41 KLWX 180723
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
223 AM EST SUN JAN 18 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 17 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 44 4:19 PM 70 1990 42 2 44
MINIMUM 31 10:47 PM -7 1982 25 6 32
AVERAGE 38 34 4 38
PRECIPITATION (IN)
YESTERDAY 0.03 1.14 1994 0.10 -0.07 0.00
MONTH TO DATE 1.27 1.61 -0.34 0.82
SINCE DEC 1 2.57 4.91 -2.34 4.16
SINCE JAN 1 1.27 1.61 -0.34 0.82
SNOWFALL (IN)
YESTERDAY 0.3 4.2 1965 0.3 0.0 0.0
MONTH TO DATE 0.4 3.2 -2.8 9.1
SINCE DEC 1 2.4 6.0 -3.6 9.2
SINCE JUL 1 2.4 6.3 -3.9 9.2
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 27 31 -4 27
MONTH TO DATE 461 523 -62 591
SINCE DEC 1 1395 1368 27 1420
SINCE JUL 1 2188 2268 -80 2088
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
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 6.4
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
SNOW
LIGHT SNOW
SLEET
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 88 11:00 PM
LOWEST 29 2:00 AM
AVERAGE 59
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 42 70 1990
MINIMUM TEMPERATURE (F) 25 -1 1994
SUNRISE AND SUNSET
JANUARY 18 2026.......SUNRISE 7:26 AM EST SUNSET 5:15 PM EST
JANUARY 19 2026.......SUNRISE 7:25 AM EST SUNSET 5:16 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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