National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2017-09-29 05:40 UTC
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942
CDUS41 KLWX 290540
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
140 AM EDT FRI SEP 29 2017
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 28 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 79 332 PM 86 1998 75 4 68
MINIMUM 62 1159 PM 34 1989 51 11 62
AVERAGE 71 63 8 65
PRECIPITATION (IN)
YESTERDAY 0.00 1.61 2004 0.13 -0.13 0.82
MONTH TO DATE 1.75 3.65 -1.90 1.52
SINCE SEP 1 1.75 3.65 -1.90 1.52
SINCE JAN 1 34.75 31.65 3.10 29.52
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 45 -15 3
SINCE SEP 1 30 45 -15 3
SINCE JUL 1 31 47 -16 3
COOLING
YESTERDAY 6 2 4 0
MONTH TO DATE 155 137 18 255
SINCE SEP 1 155 137 18 255
SINCE JAN 1 1216 1153 63 1518
..................................................................
WIND (MPH)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 13.0
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 84 1200 AM
LOWEST 30 300 PM
AVERAGE 57
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 85 1986
1973
MINIMUM TEMPERATURE (F) 50 34 1978
SUNRISE AND SUNSET
SEPTEMBER 29 2017.....SUNRISE 704 AM EDT SUNSET 655 PM EDT
SEPTEMBER 30 2017.....SUNRISE 705 AM EDT SUNSET 654 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$