CDUS41 KLWX 120724 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 224 AM EST FRI DEC 12 2025 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 11 2025... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1960 TO 2025 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 41 1:36 AM 71 1979 48 -7 62 MINIMUM 32 9:30 PM 3 1968 30 2 34 AVERAGE 37 39 -2 48 PRECIPITATION (IN) YESTERDAY T 1.51 2024 0.12 -0.12 1.51 MONTH TO DATE 0.78 1.26 -0.48 1.59 SINCE DEC 1 0.78 1.26 -0.48 1.59 SINCE JAN 1 29.66 41.20 -11.54 32.62 SNOWFALL (IN) YESTERDAY T 0.5 1962 0.1 -0.1 0.0 2023 MONTH TO DATE 1.3 0.8 0.5 T SINCE DEC 1 1.3 0.8 0.5 T SINCE JUL 1 1.3 1.1 0.2 T SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 28 26 2 17 MONTH TO DATE 349 276 73 302 SINCE DEC 1 349 276 73 302 SINCE JUL 1 1142 1176 -34 970 COOLING YESTERDAY 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE DEC 1 0 0 0 0 SINCE JAN 1 1330 1231 99 1586 ................................................................... WIND (MPH) HIGHEST WIND SPEED 31 HIGHEST WIND DIRECTION NW (300) HIGHEST GUST SPEED 43 HIGHEST GUST DIRECTION NW (300) AVERAGE WIND SPEED 14.7 SKY COVER AVERAGE SKY COVER 0.7 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. LIGHT SNOW RELATIVE HUMIDITY (PERCENT) HIGHEST 78 12:00 AM LOWEST 33 11:00 AM AVERAGE 56 .......................................................... THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 47 72 1979 MINIMUM TEMPERATURE (F) 30 9 1988 SUNRISE AND SUNSET DECEMBER 12 2025......SUNRISE 7:19 AM EST SUNSET 4:48 PM EST DECEMBER 13 2025......SUNRISE 7:20 AM EST SUNSET 4:48 PM EST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$