000 CDUS41 KLWX 150551 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1250 AM EST SAT DEC 15 2007 ................................... ...THE WASHINGTON DULLES CLIMATE SUMMARY FOR DECEMBER 14 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 52 234 PM 67 2001 46 6 63 MINIMUM 35 1159 PM 3 1989 26 9 34 AVERAGE 44 36 8 49 PRECIPITATION (IN) YESTERDAY 0.00 0.96 1999 0.10 -0.10 0.00 MONTH TO DATE 1.07 1.40 -0.33 0.16 SINCE DEC 1 1.07 1.40 -0.33 0.16 SINCE JAN 1 26.10 40.13 -14.03 44.40 SNOWFALL (IN) YESTERDAY 0.0 0.1 -0.1 MONTH TO DATE 2.5 0.5 2.0 SINCE JUL 1 2.5 1.4 1.1 SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 21 28 -7 16 MONTH TO DATE 371 369 2 351 SINCE DEC 1 371 369 2 351 SINCE JUL 1 1100 1346 -246 1212 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 17 HIGHEST WIND DIRECTION NW (310) HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION N (360) AVERAGE WIND SPEED 5.6 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.7 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. FOG FOG W/VISIBILITY <= 1/4 MILE RELATIVE HUMIDITY (PERCENT) HIGHEST 100 600 AM LOWEST 42 400 PM AVERAGE 71 .......................................................... THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 46 71 1971 MINIMUM TEMPERATURE (F) 26 5 1989 SUNRISE AND SUNSET DECEMBER 15 2007......SUNRISE 721 AM EST SUNSET 449 PM EST DECEMBER 16 2007......SUNRISE 722 AM EST SUNSET 449 PM EST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$