428 CDUS41 KLWX 290537 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1237 AM EST THU DEC 29 2022 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 28 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 52 3:27 PM 73 1984 44 8 57 MINIMUM 21 7:18 AM 8 1966 27 -6 35 AVERAGE 37 35 2 46 PRECIPITATION (IN) YESTERDAY 0.00 1.74 1967 0.10 -0.10 0.02 MONTH TO DATE 4.70 3.03 1.67 0.21 SINCE DEC 1 4.70 3.03 1.67 0.21 SINCE JAN 1 40.51 42.97 -2.46 34.71 SNOWFALL (IN) YESTERDAY 0.0 2.3 1993 0.1 -0.1 0.0 MONTH TO DATE T 2.4 -2.4 0.0 SINCE DEC 1 T 2.4 -2.4 0.0 SINCE JUL 1 T 2.7 -2.7 T SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 28 30 -2 19 MONTH TO DATE 808 756 52 579 SINCE DEC 1 808 756 52 579 SINCE JUL 1 1642 1656 -14 1305 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 10 HIGHEST WIND DIRECTION S (200) HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION SW (220) AVERAGE WIND SPEED 4.4 SKY COVER AVERAGE SKY COVER 0.2 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 78 2:00 AM LOWEST 38 4:00 PM AVERAGE 58 .......................................................... THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 44 78 1984 MINIMUM TEMPERATURE (F) 27 7 1977 SUNRISE AND SUNSET DECEMBER 29 2022......SUNRISE 7:28 AM EST SUNSET 4:56 PM EST DECEMBER 30 2022......SUNRISE 7:28 AM EST SUNSET 4:57 PM EST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$