National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2020-12-14 05:22 UTC
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881
CDUS41 KLWX 140522
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1222 AM EST MON DEC 14 2020
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 13 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 65 1:13 PM 73 2015 46 19 38
MINIMUM 39 11:03 PM 7 1988 28 11 33
AVERAGE 52 37 15 36
PRECIPITATION (IN)
YESTERDAY 0.00 1.47 1996 0.09 -0.09 0.25
MONTH TO DATE 0.99 1.39 -0.40 1.49
SINCE DEC 1 0.99 1.39 -0.40 1.49
SINCE JAN 1 44.64 39.97 4.67 39.33
SNOWFALL (IN)
YESTERDAY 0.0 8.8 1966 0.1 -0.1 0.0
MONTH TO DATE T 1.2 -1.2 0.2
SINCE DEC 1 T 1.2 -1.2 0.2
SINCE JUL 1 T 1.7 -1.7 0.2
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 13 28 -15 29
MONTH TO DATE 296 340 -44 343
SINCE DEC 1 296 340 -44 343
SINCE JUL 1 963 1256 -293 1206
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 15 HIGHEST WIND DIRECTION N (350)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 8.1
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 86 6:00 AM
LOWEST 43 2:00 PM
AVERAGE 65
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 46 69 2015
MINIMUM TEMPERATURE (F) 27 3 1989
SUNRISE AND SUNSET
DECEMBER 14 2020......SUNRISE 7:21 AM EST SUNSET 4:48 PM EST
DECEMBER 15 2020......SUNRISE 7:22 AM EST SUNSET 4:49 PM EST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$