492 CDUS41 KLWX 290624 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 224 AM EDT MON SEP 29 2025 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 28 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 85 3:01 PM 86 1998 75 10 84 2019 MINIMUM 62 11:59 PM 34 1989 53 9 71 AVERAGE 74 64 10 78 PRECIPITATION (IN) YESTERDAY 0.00 1.61 2004 0.14 -0.14 0.01 MONTH TO DATE 1.22 3.65 -2.43 3.01 SINCE SEP 1 1.22 3.65 -2.43 3.01 SINCE JAN 1 25.86 32.87 -7.01 28.79 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 SEP 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 4 -4 0 MONTH TO DATE 7 35 -28 12 SINCE SEP 1 7 35 -28 12 SINCE JUL 1 9 36 -27 14 COOLING YESTERDAY 9 2 7 13 MONTH TO DATE 159 147 12 133 SINCE SEP 1 159 147 12 133 SINCE JAN 1 1307 1203 104 1547 ................................................................... WIND (MPH) HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION NW (330) HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION N (350) AVERAGE WIND SPEED 2.8 SKY COVER AVERAGE SKY COVER 0.5 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 93 5:00 AM LOWEST 38 4:00 PM AVERAGE 66 .......................................................... THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 74 89 2019 MINIMUM TEMPERATURE (F) 52 34 1978 SUNRISE AND SUNSET SEPTEMBER 29 2025.....SUNRISE 7:04 AM EDT SUNSET 6:55 PM EDT SEPTEMBER 30 2025.....SUNRISE 7:05 AM EDT SUNSET 6:54 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$