641
CDUS41 KLWX 202128
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
428 PM EST FRI DEC 20 2024
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 20 2024
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2024
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 40 3:45 PM 64 1988 45 -5 48
MINIMUM 35 12:18 AM 8 1991 28 7 22
AVERAGE 38 37 1 35
PRECIPITATION (IN)
TODAY T 0.66 1973 0.11 -0.11 0.00
MONTH TO DATE 2.35 2.23 0.12 4.73
SINCE DEC 1 2.35 2.23 0.12 4.73
SINCE JAN 1 33.38 42.17 -8.79 33.76
SNOWFALL (IN)
TODAY T 4.3 1966 0.0 0.0 0.0
MONTH TO DATE T 1.6 -1.6 0.5
SINCE DEC 1 T 1.6 -1.6 0.5
SINCE JUL 1 T 1.9 -1.9 0.5
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 27 28 -1 30
MONTH TO DATE 542 523 19 450
SINCE DEC 1 542 523 19 450
SINCE JUL 1 1210 1423 -213 1221
COOLING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 1586 1231 355 1380
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION E (90)
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION E (90)
AVERAGE WIND SPEED 5.3
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
LIGHT SNOW
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 79 2:00 PM
LOWEST 67 4:00 AM
AVERAGE 73
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 45 70 2013
MINIMUM TEMPERATURE (F) 28 4 1989
SUNRISE AND SUNSET
DECEMBER 20 2024......SUNRISE 7:25 AM EST SUNSET 4:51 PM EST
DECEMBER 21 2024......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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