National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2017-08-18 05:23 UTC
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056
CDUS41 KLWX 180523
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
123 AM EDT FRI AUG 18 2017
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 17 2017...
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1960 TO 2017
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
..................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 89 232 PM 101 1988 87 2 94
MINIMUM 68 529 AM 44 1979 64 4 70
AVERAGE 79 76 3 82
PRECIPITATION (IN)
YESTERDAY T 3.32 1997 0.12 -0.12 0.66
MONTH TO DATE 2.42 2.03 0.39 0.87
SINCE JUN 1 12.50 9.68 2.82 10.24
SINCE JAN 1 31.59 26.50 5.09 27.91
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0
SINCE JUL 1 T 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 15 -9 3
SINCE JUL 1 0 0 0 0
COOLING
YESTERDAY 14 11 3 17
MONTH TO DATE 154 188 -34 265
SINCE JUN 1 813 788 25 977
SINCE JAN 1 950 880 70 1075
..................................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION S (160)
AVERAGE WIND SPEED 5.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 200 AM
LOWEST 68 100 PM
AVERAGE 84
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 98 2009
MINIMUM TEMPERATURE (F) 64 45 1981
SUNRISE AND SUNSET
AUGUST 18 2017........SUNRISE 626 AM EDT SUNSET 800 PM EDT
AUGUST 19 2017........SUNRISE 627 AM EDT SUNSET 759 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$