206 CDUS41 KLWX 110524 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 124 AM EDT FRI SEP 11 2020 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 10 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 83 3:48 PM 99 1983 82 1 85 MINIMUM 74 11:59 PM 43 1981 59 15 60 AVERAGE 79 70 9 73 PRECIPITATION (IN) YESTERDAY 0.11 1.50 1968 0.12 -0.01 0.00 MONTH TO DATE 1.16 1.19 -0.03 0.32 SINCE SEP 1 1.16 1.19 -0.03 0.32 SINCE JAN 1 35.38 29.19 6.19 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 3 -3 0 SINCE SEP 1 0 3 -3 0 SINCE JUL 1 0 5 -5 0 COOLING YESTERDAY 14 6 8 8 MONTH TO DATE 91 71 20 89 SINCE SEP 1 91 71 20 89 SINCE JAN 1 1343 1087 256 1324 ................................................................... WIND (MPH) HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION N (360) HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION NE (50) AVERAGE WIND SPEED 5.1 SKY COVER AVERAGE SKY COVER 0.8 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. RAIN LIGHT RAIN FOG RELATIVE HUMIDITY (PERCENT) HIGHEST 97 2:00 AM LOWEST 77 2:00 PM AVERAGE 87 .......................................................... THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 81 99 1983 MINIMUM TEMPERATURE (F) 58 40 1976 SUNRISE AND SUNSET SEPTEMBER 11 2020.....SUNRISE 6:48 AM EDT SUNSET 7:24 PM EDT SEPTEMBER 12 2020.....SUNRISE 6:49 AM EDT SUNSET 7:22 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$