National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2017-07-18 05:34 UTC
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461
CDUS41 KLWX 180534
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
134 AM EDT TUE JUL 18 2017
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 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 89 342 PM 100 1997 88 1 90
1988
MINIMUM 71 456 AM 55 2014 66 5 65
1976
AVERAGE 80 77 3 78
PRECIPITATION (IN)
YESTERDAY 0.00 0.60 1988 0.11 -0.11 0.00
MONTH TO DATE 3.89 2.01 1.88 1.10
SINCE JUN 1 5.17 5.99 -0.82 7.45
SINCE JAN 1 24.26 22.81 1.45 25.12
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0
SINCE JUL 1 0.0 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 15 12 3 13
MONTH TO DATE 231 199 32 220
SINCE JUN 1 487 436 51 473
SINCE JAN 1 624 528 96 571
..................................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION S (180)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION S (180)
AVERAGE WIND SPEED 6.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 500 AM
LOWEST 50 100 PM
AVERAGE 70
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 101 2012
MINIMUM TEMPERATURE (F) 66 51 1985
SUNRISE AND SUNSET
JULY 18 2017..........SUNRISE 559 AM EDT SUNSET 833 PM EDT
JULY 19 2017..........SUNRISE 600 AM EDT SUNSET 832 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$