095 CDUS41 KLWX 130524 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1224 AM EST SUN DEC 13 2020 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 12 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 65 3:09 PM 72 1979 47 18 39 MINIMUM 36 7:35 AM 9 1988 28 8 23 AVERAGE 51 37 14 31 PRECIPITATION (IN) YESTERDAY T 0.95 1964 0.11 -0.11 0.00 MONTH TO DATE 0.99 1.30 -0.31 1.24 SINCE DEC 1 0.99 1.30 -0.31 1.24 SINCE JAN 1 44.64 39.88 4.76 39.08 SNOWFALL (IN) YESTERDAY 0.0 10.6 1982 0.1 -0.1 0.0 MONTH TO DATE T 1.1 -1.1 0.2 SINCE DEC 1 T 1.1 -1.1 0.2 SINCE JUL 1 T 1.6 -1.6 0.2 SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 14 28 -14 34 MONTH TO DATE 283 312 -29 314 SINCE DEC 1 283 312 -29 314 SINCE JUL 1 950 1228 -278 1177 COOLING YESTERDAY 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE DEC 1 0 0 0 0 SINCE JAN 1 1406 1178 228 1524 ................................................................... WIND (MPH) HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION SW (220) HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION SW (220) AVERAGE WIND SPEED 6.9 SKY COVER AVERAGE SKY COVER 0.6 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. FOG HAZE RELATIVE HUMIDITY (PERCENT) HIGHEST 97 8:00 AM LOWEST 47 3:00 PM AVERAGE 72 .......................................................... THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 46 73 2015 MINIMUM TEMPERATURE (F) 28 7 1988 SUNRISE AND SUNSET DECEMBER 13 2020......SUNRISE 7:20 AM EST SUNSET 4:48 PM EST DECEMBER 14 2020......SUNRISE 7:21 AM EST SUNSET 4:48 PM EST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$