398
CDUS41 KLWX 092128
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
428 PM EST SAT DEC 09 2023
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 9 2023
VALID TODAY AS OF 0400 PM LOCAL TIME.
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)
TODAY
MAXIMUM 57 3:59 PM 72 1978 48 9 50
MINIMUM 29 7:36 AM 11 1989 30 -1 29
AVERAGE 43 39 4 40
PRECIPITATION (IN)
TODAY 0.00 1.12 1973 0.12 -0.12 0.00
MONTH TO DATE 0.69 1.03 -0.34 0.40
SINCE DEC 1 0.69 1.03 -0.34 0.40
SINCE JAN 1 29.72 40.97 -11.25 36.21
SNOWFALL (IN)
TODAY 0.0 4.0 2017 0.1 -0.1 0.0
MONTH TO DATE 0.0 0.7 -0.7 0.0
SINCE DEC 1 0.0 0.7 -0.7 0.0
SINCE JUL 1 T 1.0 -1.0 T
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 22 26 -4 25
MONTH TO DATE 183 224 -41 204
SINCE DEC 1 183 224 -41 204
SINCE JUL 1 954 1124 -170 1038
COOLING
TODAY 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 8 HIGHEST WIND DIRECTION S (180)
HIGHEST GUST SPEED 11 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 1.8
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 92 8:00 AM
LOWEST 48 2:00 PM
AVERAGE 70
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 48 70 1966
MINIMUM TEMPERATURE (F) 30 4 1989
SUNRISE AND SUNSET
DECEMBER 9 2023......SUNRISE 7:17 AM EST SUNSET 4:47 PM EST
DECEMBER 10 2023......SUNRISE 7:17 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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