177
CDUS41 KLWX 190732
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
232 AM EST FRI DEC 19 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 18 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 55 1:35 PM 76 2006 46 9 53
MINIMUM 23 3:20 AM 3 1989 29 -6 31
AVERAGE 39 37 2 42
PRECIPITATION (IN)
YESTERDAY 0.13 2.92 1977 0.11 0.02 0.19
MONTH TO DATE 1.00 2.02 -1.02 2.35
SINCE DEC 1 1.00 2.02 -1.02 2.35
SINCE JAN 1 29.88 41.96 -12.08 33.38
SNOWFALL (IN)
YESTERDAY 0.0 2.0 2009 0.1 -0.1 0.0
MONTH TO DATE 2.0 1.5 0.5 T
SINCE DEC 1 2.0 1.5 0.5 T
SINCE JUL 1 2.0 1.8 0.2 T
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 26 28 -2 23
MONTH TO DATE 593 467 126 490
SINCE DEC 1 593 467 126 490
SINCE JUL 1 1386 1367 19 1158
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 10 HIGHEST WIND DIRECTION SE (150)
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION S (160)
AVERAGE WIND SPEED 3.5
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 11:00 PM
LOWEST 43 2:00 PM
AVERAGE 68
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 46 63 1967
MINIMUM TEMPERATURE (F) 28 -2 1989
SUNRISE AND SUNSET
DECEMBER 19 2025......SUNRISE 7:24 AM EST SUNSET 4:50 PM EST
DECEMBER 20 2025......SUNRISE 7:25 AM EST SUNSET 4:51 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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