000 CDUS41 KLWX 210535 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1233 AM EST SUN DEC 21 2003 ................................... ...THE WASHINGTON DULLES CLIMATE SUMMARY FOR DECEMBER 20 2003... CLIMATE NORMAL PERIOD 1971 TO 2000 CLIMATE RECORD PERIOD 1962 TO 2003 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL .................................................................. TEMPERATURE (F) YESTERDAY MAXIMUM 38 229 PM 64 1988 45 -7 54 MINIMUM 21 628 AM 8 1991 25 -4 32 AVERAGE 30 35 -5 43 PRECIPITATION (IN) YESTERDAY 0.00 0.66 1973 0.10 -0.10 0.43 MONTH TO DATE 4.17 2.00 2.17 2.74 SINCE DEC 1 4.17 2.00 2.17 2.74 SINCE JAN 1 65.31 40.73 24.58 37.31 SNOWFALL (IN) YESTERDAY 0.0 4.3 1966 0.1 -0.1 0.0 MONTH TO DATE 11.4 1.1 10.3 6.2 SINCE DEC 1 11.4 1.1 10.3 6.2 SINCE JUL 1 11.4 2.0 9.4 6.2 SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 35 30 5 22 MONTH TO DATE 618 543 75 667 SINCE DEC 1 618 543 75 667 SINCE JUL 1 1444 1520 -76 1649 COOLING YESTERDAY 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE DEC 1 0 0 0 0 SINCE JAN 1 993 1075 -82 1345 .................................................................. WIND (MPH) HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION NW (300) HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION NW (320) AVERAGE WIND SPEED 8.6 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.4 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 92 M600 AM LOWEST 40 M400 PM AVERAGE 66 .......................................................... 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 2003......SUNRISE 725 AM EST SUNSET 451 PM EST DECEMBER 22 2003......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. $$