National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2004-01-20 05:29 UTC
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674
CDUS41 KLWX 200531
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1229 AM EST TUE JAN 20 2004
...................................
...THE WASHINGTON DULLES CLIMATE SUMMARY FOR JANUARY 19 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 29 323 PM 65 1972 41 -12 34
MINIMUM 21 1159 PM -6 1994 21 0 11
AVERAGE 25 31 -6 23
PRECIPITATION (IN)
YESTERDAY 0.00 1.36 1987 0.10 -0.10 0.00
MONTH TO DATE 0.85 1.90 -1.05 2.51
SINCE DEC 1 5.42 4.97 0.45 6.12
SINCE JAN 1 0.85 1.90 -1.05 2.51
SNOWFALL (IN)
YESTERDAY 0.0 4.3 1978 0.3 -0.3 0.0
MONTH TO DATE 0.4 4.5 -4.1 4.5
SINCE DEC 1 11.8 6.7 5.1 12.7
SINCE JUL 1 11.8 7.6 4.2 12.7
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 40 34 6 42
MONTH TO DATE 621 627 -6 648
SINCE DEC 1 1512 1511 1 1620
SINCE JUL 1 2338 2488 -150 2602
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 0 0 0 0
..................................................................
WIND (MPH)
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 38 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 14.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 57 M800 AM
LOWEST 40 M500 PM
AVERAGE 49
..........................................................
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 41 57 1991
MINIMUM TEMPERATURE (F) 21 -7 1985
SUNRISE AND SUNSET
JANUARY 20 2004.......SUNRISE 725 AM EST SUNSET 517 PM EST
JANUARY 21 2004.......SUNRISE 725 AM EST SUNSET 518 PM EST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$