670
CDUS41 KLWX 120522
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1222 AM EST TUE DEC 12 2023
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 11 2023
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2023
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 47 2:30 PM 71 1979 48 -1 49
MINIMUM 29 11:44 PM 3 1968 30 -1 33
AVERAGE 38 39 -1 41
PRECIPITATION (IN)
YESTERDAY 0.34 1.34 2008 0.12 0.22 T
MONTH TO DATE 2.46 1.26 1.20 0.40
SINCE DEC 1 2.46 1.26 1.20 0.40
SINCE JAN 1 31.49 41.20 -9.71 36.21
SNOWFALL (IN)
YESTERDAY 0.5 R 0.5 1962 0.1 0.4 0.0
MONTH TO DATE 0.5 0.8 -0.3 0.0
SINCE DEC 1 0.5 0.8 -0.3 0.0
SINCE JUL 1 0.5 1.1 -0.6 T
SNOW DEPTH T
DEGREE DAYS
HEATING
YESTERDAY 27 26 1 24
MONTH TO DATE 225 276 -51 258
SINCE DEC 1 225 276 -51 258
SINCE JUL 1 996 1176 -180 1092
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 1380 1231 149 1376
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 29 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 39 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 12.2
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
RAIN
LIGHT RAIN
SNOW
LIGHT SNOW
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 4:00 AM
LOWEST 45 2:00 PM
AVERAGE 71
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 47 72 1979
MINIMUM TEMPERATURE (F) 30 9 1988
SUNRISE AND SUNSET
DECEMBER 12 2023......SUNRISE 7:19 AM EST SUNSET 4:48 PM EST
DECEMBER 13 2023......SUNRISE 7:20 AM EST SUNSET 4:48 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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