000 CDUS41 KLWX 180535 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 135 AM EDT SAT SEP 18 2004 ................................... ...THE WASHINGTON DULLES CLIMATE SUMMARY FOR SEPTEMBER 17 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 81 233 PM 97 1991 79 2 78 MINIMUM 68 624 AM 35 1986 56 12 54 AVERAGE 75 67 8 66 PRECIPITATION (IN) YESTERDAY 1.71R 0.90 1987 0.13 1.58 0.00 MONTH TO DATE 3.51 2.21 1.30 2.59 SINCE SEP 1 3.51 2.21 1.30 2.59 SINCE JAN 1 28.25 30.44 -2.19 46.64 SNOWFALL (IN) YESTERDAY 0.0 0.0 2002 0.0 0.0 0.0 2001 MONTH TO DATE 0.0 0.0 0.0 0.0 SINCE SEP 1 0.0 0.0 0.0 0.0 SINCE JUL 1 0.0 0.0 0.0 0.0 SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 0 2 -2 0 MONTH TO DATE 0 14 -14 8 SINCE SEP 1 0 14 -14 8 SINCE JUL 1 2 19 -17 8 COOLING YESTERDAY 10 4 6 1 MONTH TO DATE 109 94 15 70 SINCE SEP 1 109 94 15 70 SINCE JAN 1 1168 1019 149 949 .................................................................. WIND (MPH) HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION S (200) HIGHEST GUST SPEED 43 HIGHEST GUST DIRECTION S (200) AVERAGE WIND SPEED 5.8 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.9 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. THUNDERSTORM HEAVY RAIN RAIN LIGHT RAIN FOG HAZE TORNADO RELATIVE HUMIDITY (PERCENT) HIGHEST 97 100 AM LOWEST 74 300 PM AVERAGE 86 .......................................................... THE WASHINGTON DULLES CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 78 91 1978 MINIMUM TEMPERATURE (F) 55 37 1990 SUNRISE AND SUNSET SEPTEMBER 18 2004.....SUNRISE 654 AM EDT SUNSET 713 PM EDT SEPTEMBER 19 2004.....SUNRISE 655 AM EDT SUNSET 711 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$