National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2020-12-22 05:26 UTC
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143
CDUS41 KLWX 220526
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1226 AM EST TUE DEC 22 2020
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 21 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 3:05 PM 70 2013 44 1 39
MINIMUM 35 7:49 PM 4 1989 26 9 22
AVERAGE 40 35 5 31
PRECIPITATION (IN)
YESTERDAY 0.02 1.15 1973 0.09 -0.07 0.00
MONTH TO DATE 3.56 2.12 1.44 2.34
SINCE DEC 1 3.56 2.12 1.44 2.34
SINCE JAN 1 47.21 40.70 6.51 40.18
SNOWFALL (IN)
YESTERDAY 0.0 5.8 1962 0.1 -0.1 0.0
MONTH TO DATE 2.4 2.1 0.3 0.6
SINCE DEC 1 2.4 2.1 0.3 0.6
SINCE JUL 1 2.4 2.6 -0.2 0.6
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 25 30 -5 34
MONTH TO DATE 539 574 -35 583
SINCE DEC 1 539 574 -35 583
SINCE JUL 1 1206 1490 -284 1446
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 9 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION NW (330)
AVERAGE WIND SPEED 3.0
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
FOG W/VISIBILITY <= 1/4 MILE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 5:00 AM
LOWEST 79 4:00 PM
AVERAGE 90
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 44 71 2013
MINIMUM TEMPERATURE (F) 26 2 1989
SUNRISE AND SUNSET
DECEMBER 22 2020......SUNRISE 7:26 AM EST SUNSET 4:52 PM EST
DECEMBER 23 2020......SUNRISE 7:26 AM EST SUNSET 4:52 PM EST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$