628 CDUS41 KLWX 090522 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 122 AM EDT WED SEP 09 2020 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 8 2020... CLIMATE NORMAL PERIOD: 1981 TO 2010 CLIMATE RECORD PERIOD: 1960 TO 2020 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 85 2:24 PM 96 2016 82 3 82 MINIMUM 58 5:43 AM 43 1984 60 -2 56 AVERAGE 72 71 1 69 PRECIPITATION (IN) YESTERDAY 0.00 3.56 1987 0.12 -0.12 0.00 MONTH TO DATE 0.28 0.94 -0.66 0.32 SINCE SEP 1 0.28 0.94 -0.66 0.32 SINCE JAN 1 34.50 28.94 5.56 30.16 SNOWFALL (IN) YESTERDAY 0.0 MM MM 0.0 0.0 0.0 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 1 -1 0 MONTH TO DATE 0 1 -1 0 SINCE SEP 1 0 1 -1 0 SINCE JUL 1 0 3 -3 0 COOLING YESTERDAY 7 6 1 4 MONTH TO DATE 69 59 10 73 SINCE SEP 1 69 59 10 73 SINCE JAN 1 1321 1075 246 1308 ................................................................... WIND (MPH) HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION S (180) HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION S (180) AVERAGE WIND SPEED 3.4 SKY COVER AVERAGE SKY COVER 0.4 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 97 2:00 AM LOWEST 57 2:00 PM AVERAGE 77 .......................................................... THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 82 98 2016 MINIMUM TEMPERATURE (F) 59 40 1986 SUNRISE AND SUNSET SEPTEMBER 9 2020.....SUNRISE 6:46 AM EDT SUNSET 7:27 PM EDT SEPTEMBER 10 2020.....SUNRISE 6:47 AM EDT SUNSET 7:25 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$