722
CDUS41 KLWX 190527
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1227 AM EST TUE DEC 19 2023
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 18 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 53 1:49 PM 76 2006 46 7 42
MINIMUM 36 11:35 PM 3 1989 29 7 28
AVERAGE 45 37 8 35
PRECIPITATION (IN)
YESTERDAY 0.36 2.92 1977 0.11 0.25 0.00
MONTH TO DATE 4.73 2.02 2.71 2.34
SINCE DEC 1 4.73 2.02 2.71 2.34
SINCE JAN 1 33.76 41.96 -8.20 38.15
SNOWFALL (IN)
YESTERDAY 0.0 2.0 2009 0.1 -0.1 0.0
MONTH TO DATE 0.5 1.5 -1.0 0.0
SINCE DEC 1 0.5 1.5 -1.0 0.0
SINCE JUL 1 0.5 1.8 -1.3 T
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 20 28 -8 30
MONTH TO DATE 390 467 -77 454
SINCE DEC 1 390 467 -77 454
SINCE JUL 1 1161 1367 -206 1288
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
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 36 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 50 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 17.7
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 12:00 AM
LOWEST 43 3:00 PM
AVERAGE 67
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 46 63 1967
MINIMUM TEMPERATURE (F) 28 -2 1989
SUNRISE AND SUNSET
DECEMBER 19 2023......SUNRISE 7:24 AM EST SUNSET 4:50 PM EST
DECEMBER 20 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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