055 CDUS41 KLWX 070524 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1224 AM EST MON DEC 07 2020 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 6 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 45 1:35 PM 79 1998 49 -4 50 MINIMUM 31 11:42 PM 9 2002 29 2 31 AVERAGE 38 39 -1 41 PRECIPITATION (IN) YESTERDAY 0.00 1.03 2016 0.11 -0.11 T MONTH TO DATE 0.99 0.66 0.33 0.46 SINCE DEC 1 0.99 0.66 0.33 0.46 SINCE JAN 1 44.64 39.24 5.40 38.30 SNOWFALL (IN) YESTERDAY 0.0 1.0 2003 0.1 -0.1 0.0 MONTH TO DATE 0.0 0.5 -0.5 T SINCE DEC 1 0.0 0.5 -0.5 T SINCE JUL 1 0.0 1.0 -1.0 T SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 27 26 1 24 MONTH TO DATE 137 150 -13 150 SINCE DEC 1 137 150 -13 150 SINCE JUL 1 804 1066 -262 1013 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 20 HIGHEST WIND DIRECTION NW (310) HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION NW (320) AVERAGE WIND SPEED 11.4 SKY COVER AVERAGE SKY COVER 0.5 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 64 9:00 PM LOWEST 47 2:00 PM AVERAGE 56 .......................................................... THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 49 77 1998 MINIMUM TEMPERATURE (F) 29 1 2002 SUNRISE AND SUNSET DECEMBER 7 2020......SUNRISE 7:15 AM EST SUNSET 4:47 PM EST DECEMBER 8 2020......SUNRISE 7:16 AM EST SUNSET 4:47 PM EST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$