National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2017-12-10 06:03 UTC
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656
CDUS41 KLWX 100604 CCA
CLIIAD
CLIMATE REPORT...CORRECTED
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
103 AM EST SUN DEC 10 2017
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 9 2017...
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1960 TO 2017
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
..................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 35 831 AM 72 1978 48 -13 37
MINIMUM 25 1026 PM 11 1989 29 -4 26
AVERAGE 30 38 -8 32
PRECIPITATION (IN)
YESTERDAY 0.21 1.12 1973 0.11 0.10 0.00
MONTH TO DATE 0.34 0.98 -0.64 1.36
SINCE DEC 1 0.34 0.98 -0.64 1.36
SINCE JAN 1 40.23 39.56 0.67 34.33
SNOWFALL (IN)
YESTERDAY 4.0 R 2.5 2005 0.1 3.9
MONTH TO DATE 4.0 0.8 3.2
SINCE JUL 1 4.0 1.3 2.7
SNOW DEPTH T
DEGREE DAYS
HEATING
YESTERDAY 35 27 8 33
MONTH TO DATE 218 230 -12 209
SINCE DEC 1 218 230 -12 209
SINCE JUL 1 1012 1146 -134 936
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 1281 1178 103 1559
..................................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 3.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
SNOW
LIGHT SNOW
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 1200 PM
LOWEST 82 1200 AM
AVERAGE 91
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 47 70 1966
MINIMUM TEMPERATURE (F) 28 4 1989
SUNRISE AND SUNSET
DECEMBER 10 2017......SUNRISE 718 AM EST SUNSET 448 PM EST
DECEMBER 11 2017......SUNRISE 719 AM EST SUNSET 448 PM EST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$
...CORRECTED FOR SNOW DEPTH...