213 CDUS41 KLWX 310538 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1238 AM EST SAT DEC 31 2022 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 30 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 66 3:49 PM 67 1990 44 22 54 MINIMUM 28 5:37 AM 4 1963 27 1 48 AVERAGE 47 35 12 51 PRECIPITATION (IN) YESTERDAY 0.00 0.87 1969 0.09 -0.09 0.16 MONTH TO DATE 4.70 3.21 1.49 0.44 SINCE DEC 1 4.70 3.21 1.49 0.44 SINCE JAN 1 40.51 43.15 -2.64 34.94 SNOWFALL (IN) YESTERDAY 0.0 0.9 1977 0.2 -0.2 0.0 MONTH TO DATE T 2.7 -2.7 0.0 SINCE DEC 1 T 2.7 -2.7 0.0 SINCE JUL 1 T 3.0 -3.0 T SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 18 30 -12 14 MONTH TO DATE 851 816 35 606 SINCE DEC 1 851 816 35 606 SINCE JUL 1 1685 1716 -31 1332 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 14 HIGHEST WIND DIRECTION S (200) HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION S (190) AVERAGE WIND SPEED 5.0 SKY COVER AVERAGE SKY COVER 0.1 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 85 5:00 AM LOWEST 39 2:00 PM AVERAGE 62 .......................................................... THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 43 73 1992 MINIMUM TEMPERATURE (F) 27 1 1993 SUNRISE AND SUNSET DECEMBER 31 2022......SUNRISE 7:28 AM EST SUNSET 4:57 PM EST JANUARY 1 2023.......SUNRISE 7:29 AM EST SUNSET 4:58 PM EST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$