393
CDUS41 KLWX 170536
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1236 AM EST SUN DEC 17 2023
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 16 2023
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)
YESTERDAY
MAXIMUM 60 1:09 PM 72 1971 46 14 51
MINIMUM 28 7:30 AM 9 2016 29 -1 33
AVERAGE 44 38 6 42
PRECIPITATION (IN)
YESTERDAY 0.00 1.30 2020 0.11 -0.11 0.06
MONTH TO DATE 2.46 1.81 0.65 2.34
SINCE DEC 1 2.46 1.81 0.65 2.34
SINCE JAN 1 31.49 41.75 -10.26 38.15
SNOWFALL (IN)
YESTERDAY 0.0 5.2 1973 0.1 -0.1 0.0
MONTH TO DATE 0.5 1.3 -0.8 0.0
SINCE DEC 1 0.5 1.3 -0.8 0.0
SINCE JUL 1 0.5 1.6 -1.1 T
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 21 27 -6 23
MONTH TO DATE 351 411 -60 399
SINCE DEC 1 351 411 -60 399
SINCE JUL 1 1122 1311 -189 1233
COOLING
YESTERDAY 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
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WIND (MPH)
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION S (160)
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION SE (150)
AVERAGE WIND SPEED 2.6
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 85 8:00 AM
LOWEST 33 2:00 PM
AVERAGE 59
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 46 70 1984
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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