National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2004-12-21 05:31 UTC
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000
CDUS41 KLWX 210532
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1231 AM EST TUE DEC 21 2004
...................................
...THE WASHINGTON DULLES CLIMATE SUMMARY FOR DECEMBER 20 2004...
CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1962 TO 2004
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
..................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 22 411 PM 64 1988 45 -23 38
MINIMUM 10 753 AM 8 1991 25 -15 21
AVERAGE 16 35 -19 30
PRECIPITATION (IN)
YESTERDAY 0.00 0.66 1973 0.10 -0.10 0.00
MONTH TO DATE 1.70 2.00 -0.30 4.17
SINCE DEC 1 1.70 2.00 -0.30 4.17
SINCE JAN 1 37.40 40.73 -3.33 65.31
SNOWFALL (IN)
YESTERDAY 0.0 4.3 1966 0.1 -0.1 0.0
MONTH TO DATE T 1.1 -1.1 11.4
SINCE DEC 1 T 1.1 -1.1 11.4
SINCE JUL 1 T 2.0 -2.0 11.4
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 49 30 19 35
MONTH TO DATE 501 543 -42 618
SINCE DEC 1 501 543 -42 618
SINCE JUL 1 1306 1520 -214 1444
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 1201 1075 126 993
..................................................................
WIND (MPH)
HIGHEST WIND SPEED 32 HIGHEST WIND DIRECTION NW (320)
HIGHEST GUST SPEED 43 HIGHEST GUST DIRECTION NW (330)
AVERAGE WIND SPEED 15.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 46 600 AM
LOWEST 31 200 PM
AVERAGE 39
..........................................................
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 2004......SUNRISE 725 AM EST SUNSET 451 PM EST
DECEMBER 22 2004......SUNRISE 726 AM EST SUNSET 452 PM EST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$