717 CDUS41 KLWX 270521 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1221 AM EST TUE DEC 27 2022 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 26 2022... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1960 TO 2022 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 33 2:55 PM 71 1964 44 -11 62 MINIMUM 12 5:35 AM -1 1983 27 -15 42 AVERAGE 23 36 -13 52 PRECIPITATION (IN) YESTERDAY 0.00 1.41 2012 0.09 -0.09 0.00 MONTH TO DATE 4.70 2.83 1.87 0.19 SINCE DEC 1 4.70 2.83 1.87 0.19 SINCE JAN 1 40.51 42.77 -2.26 34.69 SNOWFALL (IN) YESTERDAY 0.0 6.1 1969 0.1 -0.1 0.0 MONTH TO DATE T 2.2 -2.2 0.0 SINCE DEC 1 T 2.2 -2.2 0.0 SINCE JUL 1 T 2.5 -2.5 T SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 42 29 13 13 MONTH TO DATE 748 696 52 534 SINCE DEC 1 748 696 52 534 SINCE JUL 1 1582 1596 -14 1260 COOLING YESTERDAY 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE DEC 1 0 0 0 0 SINCE JAN 1 1376 1231 145 1480 ................................................................... WIND (MPH) HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION SW (220) HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION S (160) AVERAGE WIND SPEED 3.2 SKY COVER AVERAGE SKY COVER 0.5 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 80 4:00 AM LOWEST 37 4:00 PM AVERAGE 59 .......................................................... THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 44 73 1971 MINIMUM TEMPERATURE (F) 27 1 1989 SUNRISE AND SUNSET DECEMBER 27 2022......SUNRISE 7:27 AM EST SUNSET 4:55 PM EST DECEMBER 28 2022......SUNRISE 7:28 AM EST SUNSET 4:55 PM EST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$