National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2017-07-27 05:24 UTC
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715
CDUS41 KLWX 270525
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
124 AM EDT THU JUL 27 2017
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 26 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 84 431 PM 98 2012 88 -4 95
1966
MINIMUM 61 423 AM 50 1976 66 -5 76
AVERAGE 73 77 -4 86
PRECIPITATION (IN)
YESTERDAY 0.00 0.76 1989 0.12 -0.12 0.00
MONTH TO DATE 7.11 3.06 4.05 1.37
SINCE JUN 1 8.39 7.04 1.35 7.72
SINCE JAN 1 27.48 23.86 3.62 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 8 12 -4 21
MONTH TO DATE 363 307 56 374
SINCE JUN 1 619 544 75 627
SINCE JAN 1 756 636 120 725
..................................................................
WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION SE (150)
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION SE (140)
AVERAGE WIND SPEED 4.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 200 AM
LOWEST 47 400 PM
AVERAGE 70
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 98 1993
MINIMUM TEMPERATURE (F) 66 52 1977
SUNRISE AND SUNSET
JULY 27 2017..........SUNRISE 607 AM EDT SUNSET 826 PM EDT
JULY 28 2017..........SUNRISE 607 AM EDT SUNSET 825 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$