872 CDUS41 KLWX 240624 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 224 AM EDT THU JUL 24 2025 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 23 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 86 4:20 PM 99 1991 88 -2 92 2011 MINIMUM 69 5:34 AM 50 1977 67 2 67 1983 AVERAGE 78 77 1 80 PRECIPITATION (IN) YESTERDAY 0.00 1.51 1988 0.13 -0.13 0.12 MONTH TO DATE 1.83 3.13 -1.30 2.32 SINCE JUN 1 8.76 7.43 1.33 3.01 SINCE JAN 1 22.68 24.67 -1.99 20.31 SNOWFALL (IN) YESTERDAY 0.0 MM MM 0.0 0.0 0.0 MONTH TO DATE 0.0 0.0 0.0 0.0 SINCE JUN 1 0.0 0.0 0.0 0.0 SINCE JUL 1 0.0 0.0 0.0 0.0 SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE JUN 1 15 13 2 0 SINCE JUL 1 0 0 0 0 COOLING YESTERDAY 13 12 1 15 MONTH TO DATE 335 274 61 383 SINCE JUN 1 656 512 144 737 SINCE JAN 1 774 618 156 920 ................................................................... WIND (MPH) HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION S (160) HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION S (160) AVERAGE WIND SPEED 6.1 SKY COVER AVERAGE SKY COVER 0.6 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 90 6:00 AM LOWEST 52 7:00 PM AVERAGE 71 .......................................................... THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 88 99 2010 MINIMUM TEMPERATURE (F) 67 48 1985 SUNRISE AND SUNSET JULY 24 2025..........SUNRISE 6:04 AM EDT SUNSET 8:28 PM EDT JULY 25 2025..........SUNRISE 6:05 AM EDT SUNSET 8:27 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$