National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2017-09-12 05:22 UTC
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242
CDUS41 KLWX 120523
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
122 AM EDT TUE SEP 12 2017
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 11 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 72 113 PM 99 1983 81 -9 84
MINIMUM 49 607 AM 40 1976 58 -9 67
AVERAGE 61 70 -9 76
PRECIPITATION (IN)
YESTERDAY 0.00 0.72 1987 0.13 -0.13 0.00
MONTH TO DATE 1.63 1.32 0.31 0.17
SINCE SEP 1 1.63 1.32 0.31 0.17
SINCE JAN 1 34.63 29.32 5.31 28.17
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 4 1 3 0
MONTH TO DATE 30 4 26 0
SINCE SEP 1 30 4 26 0
SINCE JUL 1 31 6 25 0
COOLING
YESTERDAY 0 6 -6 11
MONTH TO DATE 19 77 -58 135
SINCE SEP 1 19 77 -58 135
SINCE JAN 1 1080 1093 -13 1398
..................................................................
WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 4.3
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 100 100 AM
LOWEST 47 200 PM
AVERAGE 74
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 81 95 1998
MINIMUM TEMPERATURE (F) 58 40 1967
SUNRISE AND SUNSET
SEPTEMBER 12 2017.....SUNRISE 649 AM EDT SUNSET 722 PM EDT
SEPTEMBER 13 2017.....SUNRISE 650 AM EDT SUNSET 721 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$