CDUS41 KLWX 210526 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1226 AM EST SAT DEC 21 2024 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 20 2024... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1960 TO 2024 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 40 4:26 PM 64 1988 45 -5 48 MINIMUM 34 9:45 PM 8 1991 28 6 22 AVERAGE 37 37 0 35 PRECIPITATION (IN) YESTERDAY T 0.66 1973 0.11 -0.11 0.00 MONTH TO DATE 2.35 2.23 0.12 4.73 SINCE DEC 1 2.35 2.23 0.12 4.73 SINCE JAN 1 33.38 42.17 -8.79 33.76 SNOWFALL (IN) YESTERDAY T 4.3 1966 0.0 0.0 0.0 MONTH TO DATE T 1.6 -1.6 0.5 SINCE DEC 1 T 1.6 -1.6 0.5 SINCE JUL 1 T 1.9 -1.9 0.5 SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 28 28 0 30 MONTH TO DATE 543 523 20 450 SINCE DEC 1 543 523 20 450 SINCE JUL 1 1211 1423 -212 1221 COOLING YESTERDAY 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE DEC 1 0 0 0 0 SINCE JAN 1 1586 1231 355 1380 ................................................................... WIND (MPH) HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION NW (330) HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION N (340) AVERAGE WIND SPEED 5.9 SKY COVER AVERAGE SKY COVER 0.9 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. LIGHT RAIN LIGHT SNOW HAZE RELATIVE HUMIDITY (PERCENT) HIGHEST 85 10:00 PM LOWEST 67 4:00 AM AVERAGE 76 .......................................................... THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 45 70 2013 MINIMUM TEMPERATURE (F) 28 4 1989 SUNRISE AND SUNSET DECEMBER 21 2024......SUNRISE 7:25 AM EST SUNSET 4:51 PM EST DECEMBER 22 2024......SUNRISE 7:26 AM EST SUNSET 4:52 PM EST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$