National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2017-07-31 05:32 UTC
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914
CDUS41 KLWX 310533
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
132 AM EDT MON JUL 31 2017
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 30 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 82 437 PM 98 1988 88 -6 88
MINIMUM 57 545 AM 48 2014 66 -9 71
AVERAGE 70 77 -7 80
PRECIPITATION (IN)
YESTERDAY 0.00 1.15 2015 0.13 -0.13 0.32
MONTH TO DATE 8.80 3.55 5.25 3.02
SINCE JUN 1 10.08 7.53 2.55 9.37
SINCE JAN 1 29.17 24.35 4.82 27.04
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 5 12 -7 15
MONTH TO DATE 395 355 40 443
SINCE JUN 1 651 592 59 696
SINCE JAN 1 788 684 104 794
..................................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 6.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 80 500 AM
LOWEST 39 600 PM
AVERAGE 60
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 98 1999
MINIMUM TEMPERATURE (F) 66 50 1997
SUNRISE AND SUNSET
JULY 31 2017..........SUNRISE 610 AM EDT SUNSET 822 PM EDT
AUGUST 1 2017........SUNRISE 611 AM EDT SUNSET 821 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$