000 CDUS41 KLWX 200526 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1225 AM EST THU DEC 20 2007 ................................... ...THE WASHINGTON DULLES CLIMATE SUMMARY FOR DECEMBER 19 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 41 352 PM 63 1967 45 -4 51 MINIMUM 29 1159 PM -2 1989 25 4 33 AVERAGE 35 35 0 42 PRECIPITATION (IN) YESTERDAY 0.00 0.86 1995 0.10 -0.10 0.00 MONTH TO DATE 2.05 1.90 0.15 0.16 SINCE DEC 1 2.05 1.90 0.15 0.16 SINCE JAN 1 27.08 40.63 -13.55 44.40 SNOWFALL (IN) YESTERDAY 0.0 0.1 -0.1 MONTH TO DATE 2.5 1.0 1.5 SINCE JUL 1 2.5 1.9 0.6 SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 30 29 1 23 MONTH TO DATE 525 513 12 430 SINCE DEC 1 525 513 12 430 SINCE JUL 1 1254 1490 -236 1291 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 12 HIGHEST WIND DIRECTION S (180) HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION SE (120) AVERAGE WIND SPEED 4.1 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.8 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. HAZE RELATIVE HUMIDITY (PERCENT) HIGHEST 78 1100 PM LOWEST 40 400 AM AVERAGE 59 .......................................................... THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 45 64 1988 MINIMUM TEMPERATURE (F) 25 8 1991 SUNRISE AND SUNSET DECEMBER 20 2007......SUNRISE 724 AM EST SUNSET 450 PM EST DECEMBER 21 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. $$