000 CDUS41 KLWX 180517 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1217 AM EST TUE DEC 18 2007 ................................... ...THE WASHINGTON DULLES CLIMATE SUMMARY FOR DECEMBER 17 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 39 201 PM 70 1984 45 -6 66 MINIMUM 27 1159 PM 3 1989 26 1 29 AVERAGE 33 35 -2 48 PRECIPITATION (IN) YESTERDAY 0.00 0.75 2000 0.10 -0.10 0.00 MONTH TO DATE 2.05 1.70 0.35 0.16 SINCE DEC 1 2.05 1.70 0.35 0.16 SINCE JAN 1 27.08 40.43 -13.35 44.40 SNOWFALL (IN) YESTERDAY 0.0 0.1 -0.1 MONTH TO DATE 2.5 0.8 1.7 SINCE JUL 1 2.5 1.7 0.8 SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 32 29 3 17 MONTH TO DATE 461 455 6 403 SINCE DEC 1 461 455 6 403 SINCE JUL 1 1190 1432 -242 1264 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 32 HIGHEST WIND DIRECTION NW (300) HIGHEST GUST SPEED 46 HIGHEST GUST DIRECTION W (280) AVERAGE WIND SPEED 14.2 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.5 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 58 900 PM LOWEST 40 200 PM AVERAGE 49 .......................................................... THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 45 76 2006 MINIMUM TEMPERATURE (F) 25 3 1989 SUNRISE AND SUNSET DECEMBER 18 2007......SUNRISE 723 AM EST SUNSET 450 PM EST DECEMBER 19 2007......SUNRISE 724 AM EST SUNSET 450 PM EST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$