National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2017-09-20 05:26 UTC
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156
CDUS41 KLWX 200527
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
126 AM EDT WED SEP 20 2017
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 19 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 82 359 PM 93 1978 78 4 76
1977
MINIMUM 65 1159 PM 36 1984 55 10 69
AVERAGE 74 67 7 73
PRECIPITATION (IN)
YESTERDAY 0.00 1.26 2000 0.15 -0.15 0.23
MONTH TO DATE 1.75 2.47 -0.72 0.40
SINCE SEP 1 1.75 2.47 -0.72 0.40
SINCE JAN 1 34.75 30.47 4.28 28.40
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 2 -2 0
MONTH TO DATE 30 16 14 0
SINCE SEP 1 30 16 14 0
SINCE JUL 1 31 18 13 0
COOLING
YESTERDAY 9 4 5 8
MONTH TO DATE 71 113 -42 213
SINCE SEP 1 71 113 -42 213
SINCE JAN 1 1132 1129 3 1476
..................................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION N (360)
AVERAGE WIND SPEED 8.4
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 100 100 AM
LOWEST 55 400 PM
AVERAGE 78
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 91 1965
MINIMUM TEMPERATURE (F) 55 40 1979
SUNRISE AND SUNSET
SEPTEMBER 20 2017.....SUNRISE 656 AM EDT SUNSET 710 PM EDT
SEPTEMBER 21 2017.....SUNRISE 657 AM EDT SUNSET 708 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$