000 CDUS41 KLWX 210532 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1231 AM EST TUE DEC 21 2004 ................................... ...THE WASHINGTON DULLES CLIMATE SUMMARY FOR DECEMBER 20 2004... CLIMATE NORMAL PERIOD 1971 TO 2000 CLIMATE RECORD PERIOD 1962 TO 2004 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL .................................................................. TEMPERATURE (F) YESTERDAY MAXIMUM 22 411 PM 64 1988 45 -23 38 MINIMUM 10 753 AM 8 1991 25 -15 21 AVERAGE 16 35 -19 30 PRECIPITATION (IN) YESTERDAY 0.00 0.66 1973 0.10 -0.10 0.00 MONTH TO DATE 1.70 2.00 -0.30 4.17 SINCE DEC 1 1.70 2.00 -0.30 4.17 SINCE JAN 1 37.40 40.73 -3.33 65.31 SNOWFALL (IN) YESTERDAY 0.0 4.3 1966 0.1 -0.1 0.0 MONTH TO DATE T 1.1 -1.1 11.4 SINCE DEC 1 T 1.1 -1.1 11.4 SINCE JUL 1 T 2.0 -2.0 11.4 SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 49 30 19 35 MONTH TO DATE 501 543 -42 618 SINCE DEC 1 501 543 -42 618 SINCE JUL 1 1306 1520 -214 1444 COOLING YESTERDAY 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE DEC 1 0 0 0 0 SINCE JAN 1 1201 1075 126 993 .................................................................. WIND (MPH) HIGHEST WIND SPEED 32 HIGHEST WIND DIRECTION NW (320) HIGHEST GUST SPEED 43 HIGHEST GUST DIRECTION NW (330) AVERAGE WIND SPEED 15.6 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 46 600 AM LOWEST 31 200 PM AVERAGE 39 .......................................................... THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 44 60 1971 MINIMUM TEMPERATURE (F) 25 4 1989 SUNRISE AND SUNSET DECEMBER 21 2004......SUNRISE 725 AM EST SUNSET 451 PM EST DECEMBER 22 2004......SUNRISE 726 AM EST SUNSET 452 PM EST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$