National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2021-08-10 05:21 UTC
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463
CDUS41 KLWX 100521
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
121 AM EDT TUE AUG 10 2021
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 9 2021...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2021
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 94 2:33 PM 97 1980 87 7 91
2001
MINIMUM 68 5:05 AM 47 1989 66 2 69
AVERAGE 81 77 4 80
PRECIPITATION (IN)
YESTERDAY 0.00 2.28 1969 0.12 -0.12 0.00
MONTH TO DATE 0.65 1.08 -0.43 2.97
SINCE JUN 1 6.73 9.53 -2.80 13.03
SINCE JAN 1 20.31 26.77 -6.46 29.55
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE JUN 1 0.0 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 6 13 -7 5
SINCE JUL 1 0 0 0 0
COOLING
YESTERDAY 16 12 4 15
MONTH TO DATE 79 108 -29 128
SINCE JUN 1 793 724 69 902
SINCE JAN 1 902 830 72 979
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION S (200)
AVERAGE WIND SPEED 5.2
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 3:00 AM
LOWEST 43 5:00 PM
AVERAGE 72
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 97 2009
MINIMUM TEMPERATURE (F) 66 51 1999
SUNRISE AND SUNSET
AUGUST 10 2021........SUNRISE 6:19 AM EDT SUNSET 8:11 PM EDT
AUGUST 11 2021........SUNRISE 6:20 AM EDT SUNSET 8:09 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$