National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2017-09-25 05:31 UTC
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483
CDUS41 KLWX 250531
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
131 AM EDT MON SEP 25 2017
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 24 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 89 223 PM 97 2010 76 13 76
MINIMUM 60 224 AM 30 1974 53 7 56
AVERAGE 75 64 11 66
PRECIPITATION (IN)
YESTERDAY 0.00 2.17 2001 0.13 -0.13 0.00
MONTH TO DATE 1.75 3.13 -1.38 0.40
SINCE SEP 1 1.75 3.13 -1.38 0.40
SINCE JAN 1 34.75 31.13 3.62 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 3 -3 0
MONTH TO DATE 30 30 0 0
SINCE SEP 1 30 30 0 0
SINCE JUL 1 31 32 -1 0
COOLING
YESTERDAY 10 3 7 1
MONTH TO DATE 112 129 -17 252
SINCE SEP 1 112 129 -17 252
SINCE JAN 1 1173 1145 28 1515
..................................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION N (10)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 4.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 200 AM
LOWEST 46 200 PM
AVERAGE 73
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 76 93 2010
MINIMUM TEMPERATURE (F) 52 33 1983
SUNRISE AND SUNSET
SEPTEMBER 25 2017.....SUNRISE 700 AM EDT SUNSET 702 PM EDT
SEPTEMBER 26 2017.....SUNRISE 701 AM EDT SUNSET 700 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$