020
CDUS41 KLWX 190537
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
135 AM EDT MON OCT 19 2009
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 18 2009
CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1962 TO 2009
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
..............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 53 311 PM 82 2007 67 -14 60
1963
MINIMUM 40 551 AM 27 1982 41 -1 46
1976
AVERAGE 47 54 -7 53
PRECIPITATION (IN)
YESTERDAY 0.06 2.09 1996 0.11 -0.05 0.00
MONTH TO DATE 2.30 2.00 0.30 0.19
SINCE SEP 1 4.13 5.82 -1.69 7.37
SINCE JAN 1 35.53 34.05 1.48 38.25
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 18 11 7 12
MONTH TO DATE 174 152 22 83
SINCE SEP 1 193 212 -19 107
SINCE JUL 1 193 217 -24 107
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 8 15 -7 17
SINCE SEP 1 137 147 -10 177
SINCE JAN 1 1259 1072 187 1171
..............................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION NW (330)
AVERAGE WIND SPEED 12.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 86 1200 AM
LOWEST 50 300 PM
AVERAGE 68
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 67 83 1991
1963
MINIMUM TEMPERATURE (F) 41 25 1976
SUNRISE AND SUNSET
OCTOBER 19 2009.......SUNRISE 723 AM EDT SUNSET 625 PM EDT
OCTOBER 20 2009.......SUNRISE 725 AM EDT SUNSET 624 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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