561
CDUS41 KLWX 172125
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
425 PM EST TUE DEC 17 2024
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 17 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 62 3:58 PM 70 1984 46 16 54
MINIMUM 48 12:02 AM 3 1989 29 19 37
AVERAGE 55 37 18 46
PRECIPITATION (IN)
TODAY 0.00 1.91 2023 0.10 -0.10 1.91
MONTH TO DATE 2.16 1.91 0.25 4.37
SINCE DEC 1 2.16 1.91 0.25 4.37
SINCE JAN 1 33.19 41.85 -8.66 33.40
SNOWFALL (IN)
TODAY 0.0 4.3 1973 0.1 -0.1 0.0
MONTH TO DATE T 1.4 -1.4 0.5
SINCE DEC 1 T 1.4 -1.4 0.5
SINCE JUL 1 T 1.7 -1.7 0.5
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 10 28 -18 19
MONTH TO DATE 460 439 21 370
SINCE DEC 1 460 439 21 370
SINCE JUL 1 1128 1339 -211 1141
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 20 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 8.1
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 4:00 AM
LOWEST 62 4:00 PM
AVERAGE 78
......................................................
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 2024......SUNRISE 7:23 AM EST SUNSET 4:49 PM EST
DECEMBER 18 2024......SUNRISE 7:24 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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