National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2017-09-28 05:25 UTC
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989
CDUS41 KLWX 280525
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
125 AM EDT THU SEP 28 2017
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 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 89 415 PM 96 1998 75 14 77
MINIMUM 68 1147 PM 35 1984 51 17 58
AVERAGE 79 63 16 68
PRECIPITATION (IN)
YESTERDAY 0.00 1.55 1985 0.13 -0.13 0.27
MONTH TO DATE 1.75 3.52 -1.77 0.70
SINCE SEP 1 1.75 3.52 -1.77 0.70
SINCE JAN 1 34.75 31.52 3.23 28.70
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 4 -4 0
MONTH TO DATE 30 41 -11 3
SINCE SEP 1 30 41 -11 3
SINCE JUL 1 31 43 -12 3
COOLING
YESTERDAY 14 2 12 3
MONTH TO DATE 149 135 14 255
SINCE SEP 1 149 135 14 255
SINCE JAN 1 1210 1151 59 1518
..................................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION N (360)
AVERAGE WIND SPEED 7.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 200 AM
LOWEST 47 300 PM
AVERAGE 72
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 86 1998
MINIMUM TEMPERATURE (F) 51 34 1989
SUNRISE AND SUNSET
SEPTEMBER 28 2017.....SUNRISE 703 AM EDT SUNSET 657 PM EDT
SEPTEMBER 29 2017.....SUNRISE 704 AM EDT SUNSET 655 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$