CDUS41 KLWX 202126 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 526 PM EDT SUN SEP 20 2026 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 20 2026... VALID TODAY AS OF 0500 PM LOCAL TIME. CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1960 TO 2026 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) TODAY MAXIMUM 81 2:42 PM 91 1965 78 3 80 MINIMUM 69 7:39 AM 40 1979 56 13 66 AVERAGE 75 67 8 73 PRECIPITATION (IN) TODAY 0.07 0.87 1966 0.14 -0.07 0.00 MONTH TO DATE 1.63 2.61 -0.98 1.05 SINCE SEP 1 1.63 2.61 -0.98 1.05 SINCE JAN 1 31.03 31.83 -0.80 25.69 SNOWFALL (IN) TODAY 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 TODAY 0 2 -2 0 MONTH TO DATE 0 14 -14 7 SINCE SEP 1 0 14 -14 7 SINCE JUL 1 0 15 -15 9 COOLING TODAY 10 4 6 8 MONTH TO DATE 186 124 62 96 SINCE SEP 1 186 124 62 96 SINCE JAN 1 1466 1180 286 1244 ................................................................... WIND (MPH) HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION S (200) HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION S (160) AVERAGE WIND SPEED 8.2 SKY COVER AVERAGE SKY COVER 0.8 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED TODAY. LIGHT RAIN FOG RELATIVE HUMIDITY (PERCENT) HIGHEST 87 8:00 AM LOWEST 67 2:00 PM AVERAGE 77 .......................................................... THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 77 92 19651998 MINIMUM TEMPERATURE (F) 56 33 1962 SUNRISE AND SUNSET SEPTEMBER 20 2026.....SUNRISE 6:56 AM EDT SUNSET 7:10 PM EDT SEPTEMBER 21 2026.....SUNRISE 6:57 AM EDT SUNSET 7:08 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$