National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2007-12-21 05:17 UTC
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000
CDUS41 KLWX 210517
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1217 AM EST FRI DEC 21 2007
...................................
...THE WASHINGTON DULLES CLIMATE SUMMARY FOR DECEMBER 20 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 46 158 PM 64 1988 45 1 48
MINIMUM 25 444 AM 8 1991 25 0 24
AVERAGE 36 35 1 36
PRECIPITATION (IN)
YESTERDAY 0.00 0.66 1973 0.10 -0.10 0.00
MONTH TO DATE 2.05 2.00 0.05 0.16
SINCE DEC 1 2.05 2.00 0.05 0.16
SINCE JAN 1 27.08 40.73 -13.65 44.40
SNOWFALL (IN)
YESTERDAY 0.0 0.1 -0.1
MONTH TO DATE 2.5 1.1 1.4
SINCE JUL 1 2.5 2.0 0.5
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 29 30 -1 29
MONTH TO DATE 554 543 11 459
SINCE DEC 1 554 543 11 459
SINCE JUL 1 1283 1520 -237 1320
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 13 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 54 HIGHEST GUST DIRECTION SE (150)
AVERAGE WIND SPEED 3.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 88 400 AM
LOWEST 40 200 PM
AVERAGE 64
..........................................................
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 44 60 1971
MINIMUM TEMPERATURE (F) 25 4 1989
SUNRISE AND SUNSET
DECEMBER 21 2007......SUNRISE 725 AM EST SUNSET 451 PM EST
DECEMBER 22 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.
$$