National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2020-12-09 05:31 UTC
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887
CDUS41 KLWX 090531
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1231 AM EST WED DEC 09 2020
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 8 2020...
CLIMATE NORMAL PERIOD: 1981 TO 2010
CLIMATE RECORD PERIOD: 1960 TO 2020
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 45 2:44 PM 76 1980 48 -3 47
MINIMUM 31 6:13 AM 13 2002 29 2 20
AVERAGE 38 38 0 34
PRECIPITATION (IN)
YESTERDAY 0.00 1.24 1972 0.10 -0.10 0.00
MONTH TO DATE 0.99 0.87 0.12 0.46
SINCE DEC 1 0.99 0.87 0.12 0.46
SINCE JAN 1 44.64 39.45 5.19 38.30
SNOWFALL (IN)
YESTERDAY 0.0 5.0 1989 0.1 -0.1 0.0
MONTH TO DATE T 0.7 -0.7 T
SINCE DEC 1 T 0.7 -0.7 T
SINCE JUL 1 T 1.2 -1.2 T
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 27 27 0 31
MONTH TO DATE 195 203 -8 212
SINCE DEC 1 195 203 -8 212
SINCE JUL 1 862 1119 -257 1075
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 1406 1178 228 1524
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 14.1
SKY COVER
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 63 8:00 PM
LOWEST 40 3:00 PM
AVERAGE 52
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 48 72 1978
MINIMUM TEMPERATURE (F) 29 11 1989
SUNRISE AND SUNSET
DECEMBER 9 2020......SUNRISE 7:17 AM EST SUNSET 4:48 PM EST
DECEMBER 10 2020......SUNRISE 7:18 AM EST SUNSET 4:48 PM EST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$