611 CDUS41 KLWX 040522 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1222 AM EST FRI DEC 04 2020 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 3 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 53 2:34 PM 74 1998 50 3 47 MINIMUM 25 7:20 AM 7 1976 30 -5 33 AVERAGE 39 40 -1 40 PRECIPITATION (IN) YESTERDAY 0.00 1.14 1967 0.11 -0.11 0.00 MONTH TO DATE 0.01 0.33 -0.32 0.40 SINCE DEC 1 0.01 0.33 -0.32 0.40 SINCE JAN 1 43.66 38.91 4.75 38.24 SNOWFALL (IN) YESTERDAY 0.0 T 1983 0.0 0.0 0.0 1989 2005 MONTH TO DATE 0.0 0.2 -0.2 T SINCE DEC 1 0.0 0.2 -0.2 T SINCE JUL 1 0.0 0.7 -0.7 T SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 26 25 1 25 MONTH TO DATE 72 73 -1 74 SINCE DEC 1 72 73 -1 74 SINCE JUL 1 739 989 -250 937 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 12 HIGHEST WIND DIRECTION S (180) HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION S (190) AVERAGE WIND SPEED 2.6 SKY COVER AVERAGE SKY COVER 0.5 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 81 7:00 AM LOWEST 27 3:00 PM AVERAGE 54 .......................................................... THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 50 75 1998 MINIMUM TEMPERATURE (F) 30 10 1966 SUNRISE AND SUNSET DECEMBER 4 2020......SUNRISE 7:13 AM EST SUNSET 4:47 PM EST DECEMBER 5 2020......SUNRISE 7:14 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. $$