National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2017-08-25 05:48 UTC
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820
CDUS41 KLWX 250549
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
148 AM EDT FRI AUG 25 2017
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 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 81 254 PM 97 1998 86 -5 87
MINIMUM 61 153 AM 46 1987 63 -2 62
1971
AVERAGE 71 75 -4 75
PRECIPITATION (IN)
YESTERDAY T 3.88 1967 0.12 -0.12 0.00
MONTH TO DATE 3.12 2.80 0.32 0.94
SINCE JUN 1 13.20 10.45 2.75 10.31
SINCE JAN 1 32.29 27.27 5.02 27.98
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 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 6 15 -9 3
SINCE JUL 1 0 0 0 0
COOLING
YESTERDAY 6 10 -4 10
MONTH TO DATE 243 259 -16 349
SINCE JUN 1 902 859 43 1061
SINCE JAN 1 1039 951 88 1159
..................................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION NW (320)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 5.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 200 AM
LOWEST 42 100 PM
AVERAGE 70
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 86 97 2007
1998
MINIMUM TEMPERATURE (F) 63 47 1971
SUNRISE AND SUNSET
AUGUST 25 2017........SUNRISE 633 AM EDT SUNSET 750 PM EDT
AUGUST 26 2017........SUNRISE 633 AM EDT SUNSET 749 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$