National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2007-12-20 05:25 UTC
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000
CDUS41 KLWX 200526
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1225 AM EST THU DEC 20 2007
...................................
...THE WASHINGTON DULLES CLIMATE SUMMARY FOR DECEMBER 19 2007...
CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1962 TO 2007
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
..................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 41 352 PM 63 1967 45 -4 51
MINIMUM 29 1159 PM -2 1989 25 4 33
AVERAGE 35 35 0 42
PRECIPITATION (IN)
YESTERDAY 0.00 0.86 1995 0.10 -0.10 0.00
MONTH TO DATE 2.05 1.90 0.15 0.16
SINCE DEC 1 2.05 1.90 0.15 0.16
SINCE JAN 1 27.08 40.63 -13.55 44.40
SNOWFALL (IN)
YESTERDAY 0.0 0.1 -0.1
MONTH TO DATE 2.5 1.0 1.5
SINCE JUL 1 2.5 1.9 0.6
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 30 29 1 23
MONTH TO DATE 525 513 12 430
SINCE DEC 1 525 513 12 430
SINCE JUL 1 1254 1490 -236 1291
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 1593 1075 518 1256
..................................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION S (180)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION SE (120)
AVERAGE WIND SPEED 4.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 78 1100 PM
LOWEST 40 400 AM
AVERAGE 59
..........................................................
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 45 64 1988
MINIMUM TEMPERATURE (F) 25 8 1991
SUNRISE AND SUNSET
DECEMBER 20 2007......SUNRISE 724 AM EST SUNSET 450 PM EST
DECEMBER 21 2007......SUNRISE 725 AM EST SUNSET 451 PM EST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$