031
CDUS41 KLWX 180540
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1240 AM EST MON DEC 18 2023
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 17 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 54 11:56 PM 70 1984 46 8 47
MINIMUM 37 2:25 AM 3 1989 29 8 32
AVERAGE 46 37 9 40
PRECIPITATION (IN)
YESTERDAY 1.91R 0.75 2000 0.10 1.81 0.00
MONTH TO DATE 4.37 1.91 2.46 2.34
SINCE DEC 1 4.37 1.91 2.46 2.34
SINCE JAN 1 33.40 41.85 -8.45 38.15
SNOWFALL (IN)
YESTERDAY 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
YESTERDAY 19 28 -9 25
MONTH TO DATE 370 439 -69 424
SINCE DEC 1 370 439 -69 424
SINCE JUL 1 1141 1339 -198 1258
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 20 HIGHEST WIND DIRECTION N (360)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION N (360)
AVERAGE WIND SPEED 5.8
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
FOG W/VISIBILITY <= 1/4 MILE
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 10:00 PM
LOWEST 70 12:00 AM
AVERAGE 82
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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 2023......SUNRISE 7:23 AM EST SUNSET 4:50 PM EST
DECEMBER 19 2023......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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