National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2020-12-19 06:33 UTC
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366
CDUS41 KLWX 190633 CCA
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
133 AM EST SAT DEC 19 2020
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 18 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 37 6:49 PM 76 2006 45 -8 40
MINIMUM 27 11:59 PM 3 1989 26 1 25
AVERAGE 32 36 -4 33
PRECIPITATION (IN)
YESTERDAY T 2.92 1977 0.09 -0.09 T
MONTH TO DATE 3.54 1.86 1.68 2.34
SINCE DEC 1 3.54 1.86 1.68 2.34
SINCE JAN 1 47.19 40.44 6.75 40.18
SNOWFALL (IN)
YESTERDAY 0.1 2.0 2009 0.0 0.0 T
MONTH TO DATE 2.4 1.8 0.6 0.6
SINCE DEC 1 2.4 1.8 0.6 0.6
SINCE JUL 1 2.4 2.3 0.1 0.6
SNOW DEPTH 1
DEGREE DAYS
HEATING
YESTERDAY 33 29 4 32
MONTH TO DATE 453 484 -31 475
SINCE DEC 1 453 484 -31 475
SINCE JUL 1 1120 1400 -280 1338
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 12 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION N (360)
AVERAGE WIND SPEED 4.3
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT SNOW
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 6:00 AM
LOWEST 66 10:00 PM
AVERAGE 78
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 45 63 1967
MINIMUM TEMPERATURE (F) 26 -2 1989
SUNRISE AND SUNSET
DECEMBER 19 2020......SUNRISE 7:24 AM EST SUNSET 4:50 PM EST
DECEMBER 20 2020......SUNRISE 7:25 AM EST SUNSET 4:51 PM EST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$