National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2017-07-28 05:23 UTC
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333
CDUS41 KLWX 280525
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
123 AM EDT FRI JUL 28 2017
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 27 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 87 338 PM 98 1993 88 -1 94
MINIMUM 69 540 AM 52 1977 66 3 75
AVERAGE 78 77 1 85
PRECIPITATION (IN)
YESTERDAY 0.07 3.50 1994 0.12 -0.05 0.00
MONTH TO DATE 7.18 3.18 4.00 1.37
SINCE JUN 1 8.46 7.16 1.30 7.72
SINCE JAN 1 27.55 23.98 3.57 25.39
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 0.0 0.0
MONTH TO DATE T 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 13 12 1 20
MONTH TO DATE 376 319 57 394
SINCE JUN 1 632 556 76 647
SINCE JAN 1 769 648 121 745
..................................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION S (200)
AVERAGE WIND SPEED 4.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 1000 PM
LOWEST 61 400 PM
AVERAGE 81
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 99 1993
MINIMUM TEMPERATURE (F) 66 47 1977
SUNRISE AND SUNSET
JULY 28 2017..........SUNRISE 607 AM EDT SUNSET 825 PM EDT
JULY 29 2017..........SUNRISE 608 AM EDT SUNSET 824 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$