National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2007-09-21 05:19 UTC
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000
CDUS41 KLWX 210519
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
119 AM EDT FRI SEP 21 2007
...................................
...THE WASHINGTON DULLES CLIMATE SUMMARY FOR SEPTEMBER 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 77 305 PM 91 1965 78 -1 66
MINIMUM 51 633 AM 40 1979 54 -3 48
AVERAGE 64 66 -2 57
PRECIPITATION (IN)
YESTERDAY 0.00 0.87 1966 0.13 -0.13 0.00
MONTH TO DATE 0.81 2.60 -1.79 6.42
SINCE SEP 1 0.81 2.60 -1.79 6.42
SINCE JAN 1 18.45 30.83 -12.38 33.41
SNOWFALL (IN)
YESTERDAY 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 1 3 -2 8
MONTH TO DATE 26 21 5 13
SINCE SEP 1 26 21 5 13
SINCE JUL 1 26 26 0 13
COOLING
YESTERDAY 0 4 -4 0
MONTH TO DATE 146 106 40 62
SINCE SEP 1 146 106 40 62
SINCE JAN 1 1411 1031 380 1223
..................................................................
WIND (MPH)
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION S (170)
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION S (170)
AVERAGE WIND SPEED 2.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 700 AM
LOWEST 50 100 PM
AVERAGE 72
..........................................................
THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 77 92 1998
1965
MINIMUM TEMPERATURE (F) 54 42 1991
SUNRISE AND SUNSET
SEPTEMBER 21 2007.....SUNRISE 656 AM EDT SUNSET 709 PM EDT
SEPTEMBER 22 2007.....SUNRISE 657 AM EDT SUNSET 707 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$