National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2017-08-20 05:34 UTC
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195
CDUS41 KLWX 200534
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
134 AM EDT SUN AUG 20 2017
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 19 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 88 420 PM 95 2002 87 1 89
MINIMUM 66 1135 PM 51 1998 64 2 67
AVERAGE 77 75 2 78
PRECIPITATION (IN)
YESTERDAY 0.01 1.54 1967 0.11 -0.10 0.00
MONTH TO DATE 3.12 2.25 0.87 0.87
SINCE JUN 1 13.20 9.90 3.30 10.24
SINCE JAN 1 32.29 26.72 5.57 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 12 10 2 13
MONTH TO DATE 185 209 -24 294
SINCE JUN 1 844 809 35 1006
SINCE JAN 1 981 901 80 1104
..................................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 5.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 1200 AM
LOWEST 46 200 PM
AVERAGE 73
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 104 1983
MINIMUM TEMPERATURE (F) 64 47 1998
1976
1964
SUNRISE AND SUNSET
AUGUST 20 2017........SUNRISE 628 AM EDT SUNSET 757 PM EDT
AUGUST 21 2017........SUNRISE 629 AM EDT SUNSET 756 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$