686
CDUS41 KLWX 180523
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1223 AM EST WED DEC 18 2024
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 17 2024
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)
YESTERDAY
MAXIMUM 62 4:06 PM 70 1984 46 16 54
MINIMUM 34 11:52 PM 3 1989 29 5 37
AVERAGE 48 37 11 46
PRECIPITATION (IN)
YESTERDAY 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)
YESTERDAY 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
YESTERDAY 17 28 -11 19
MONTH TO DATE 467 439 28 370
SINCE DEC 1 467 439 28 370
SINCE JUL 1 1135 1339 -204 1141
COOLING
YESTERDAY 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
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WIND (MPH)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 6.5
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 4:00 AM
LOWEST 42 7:00 PM
AVERAGE 68
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 46 76 2006
MINIMUM TEMPERATURE (F) 29 3 1989
SUNRISE AND SUNSET
DECEMBER 18 2024......SUNRISE 7:24 AM EST SUNSET 4:50 PM EST
DECEMBER 19 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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