000 CDUS41 KLWX 200534 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1232 AM EST MON DEC 20 2004 ................................... ...THE WASHINGTON DULLES CLIMATE SUMMARY FOR DECEMBER 19 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 46 253 PM 63 1967 45 1 34 MINIMUM 17 1159 PM -2 1989 25 -8 24 AVERAGE 32 35 -3 29 PRECIPITATION (IN) YESTERDAY 0.01 0.20 1977 0.10 -0.09 0.00 MONTH TO DATE 1.70 1.90 -0.20 4.17 SINCE DEC 1 1.70 1.90 -0.20 4.17 SINCE JAN 1 37.40 40.63 -3.23 65.31 SNOWFALL (IN) YESTERDAY T 3.1 2000 0.1 -0.1 0.0 MONTH TO DATE T 1.0 -1.0 11.4 SINCE DEC 1 T 1.0 -1.0 11.4 SINCE JUL 1 T 1.9 -1.9 11.4 SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 33 29 4 36 MONTH TO DATE 452 513 -61 583 SINCE DEC 1 452 513 -61 583 SINCE JUL 1 1257 1490 -233 1409 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 31 HIGHEST WIND DIRECTION NW (330) HIGHEST GUST SPEED 39 HIGHEST GUST DIRECTION NW (330) AVERAGE WIND SPEED 9.1 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.7 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. LIGHT RAIN SNOW LIGHT SNOW FOG HAZE RELATIVE HUMIDITY (PERCENT) HIGHEST 96 600 AM LOWEST 47 1100 PM AVERAGE 72 .......................................................... 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 2004......SUNRISE 725 AM EST SUNSET 451 PM EST DECEMBER 21 2004......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. $$