000 CDUS41 KLWX 180520 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 119 AM EDT TUE SEP 18 2007 ................................... ...THE WASHINGTON DULLES CLIMATE SUMMARY FOR SEPTEMBER 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 72 408 PM 97 1991 79 -7 81 MINIMUM 44 424 AM 35 1986 56 -12 57 AVERAGE 58 67 -9 69 PRECIPITATION (IN) YESTERDAY 0.00 1.71 2004 0.13 -0.13 0.00 MONTH TO DATE 0.81 2.21 -1.40 6.42 SINCE SEP 1 0.81 2.21 -1.40 6.42 SINCE JAN 1 18.45 30.44 -11.99 33.41 SNOWFALL (IN) YESTERDAY 0.0 0.0 0.0 MONTH TO DATE 0.0 0.0 0.0 SINCE JUL 1 0.0 0.0 0.0 SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 7 2 5 0 MONTH TO DATE 22 14 8 5 SINCE SEP 1 22 14 8 5 SINCE JUL 1 22 19 3 5 COOLING YESTERDAY 0 4 -4 4 MONTH TO DATE 146 94 52 52 SINCE SEP 1 146 94 52 52 SINCE JAN 1 1411 1019 392 1213 .................................................................. WIND (MPH) HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION E (80) HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM AVERAGE WIND SPEED 3.3 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.1 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. HAZE RELATIVE HUMIDITY (PERCENT) HIGHEST 86 500 AM LOWEST 35 200 PM AVERAGE 61 .......................................................... 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 2007.....SUNRISE 654 AM EDT SUNSET 714 PM EDT SEPTEMBER 19 2007.....SUNRISE 654 AM EDT SUNSET 712 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$