409
CDUS41 KLWX 172132
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
432 PM EST SUN DEC 17 2023
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 17 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 53 3:22 PM 70 1984 46 7 47
MINIMUM 37 2:25 AM 3 1989 29 8 32
AVERAGE 45 37 8 40
PRECIPITATION (IN)
TODAY 0.01 0.75 2000 0.10 -0.09 0.00
MONTH TO DATE 2.47 1.91 0.56 2.34
SINCE DEC 1 2.47 1.91 0.56 2.34
SINCE JAN 1 31.50 41.85 -10.35 38.15
SNOWFALL (IN)
TODAY 0.0 4.3 1973 0.1 -0.1 0.0
MONTH TO DATE 0.5 1.4 -0.9 0.0
SINCE DEC 1 0.5 1.4 -0.9 0.0
SINCE JUL 1 0.5 1.7 -1.2 T
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 20 28 -8 25
MONTH TO DATE 371 439 -68 424
SINCE DEC 1 371 439 -68 424
SINCE JUL 1 1142 1339 -197 1258
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 7 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 10 HIGHEST GUST DIRECTION E (70)
AVERAGE WIND SPEED 3.2
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
FOG
FOG W/VISIBILITY <= 1/4 MILE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 4:00 PM
LOWEST 70 12:00 AM
AVERAGE 82
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 46 76 2006
MINIMUM TEMPERATURE (F) 29 3 1989
SUNRISE AND SUNSET
DECEMBER 17 2023......SUNRISE 7:22 AM EST SUNSET 4:49 PM EST
DECEMBER 18 2023......SUNRISE 7:23 AM EST SUNSET 4:50 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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