National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2020-12-30 05:22 UTC
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686
CDUS41 KLWX 300522
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1222 AM EST WED DEC 30 2020
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 29 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 42 12:04 AM 78 1984 43 -1 52
MINIMUM 24 10:01 PM 7 1977 25 -1 40
AVERAGE 33 34 -1 46
PRECIPITATION (IN)
YESTERDAY 0.00 1.27 2013 0.08 -0.08 0.45
MONTH TO DATE 5.81 2.81 3.00 2.79
SINCE DEC 1 5.81 2.81 3.00 2.79
SINCE JAN 1 49.46 41.39 8.07 40.63
SNOWFALL (IN)
YESTERDAY 0.0 3.3 1962 0.1 -0.1 0.0
MONTH TO DATE 2.4 3.2 -0.8 0.6
SINCE DEC 1 2.4 3.2 -0.8 0.6
SINCE JUL 1 2.4 3.7 -1.3 0.6
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 32 31 1 19
MONTH TO DATE 754 820 -66 771
SINCE DEC 1 754 820 -66 771
SINCE JUL 1 1421 1736 -315 1634
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 22 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 10.3
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 74 10:00 PM
LOWEST 31 2:00 PM
AVERAGE 53
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 43 67 1990
MINIMUM TEMPERATURE (F) 25 4 1963
SUNRISE AND SUNSET
DECEMBER 30 2020......SUNRISE 7:28 AM EST SUNSET 4:57 PM EST
DECEMBER 31 2020......SUNRISE 7:28 AM EST SUNSET 4:58 PM EST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$