397 CDUS41 KLWX 110523 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 123 AM EDT SUN SEP 11 2022 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 10 2022... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1960 TO 2022 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 82 2:49 PM 99 1983 82 0 77 MINIMUM 58 5:01 AM 43 1981 60 -2 55 AVERAGE 70 71 -1 66 PRECIPITATION (IN) YESTERDAY 0.02 1.50 1968 0.12 -0.10 0.00 MONTH TO DATE 1.93 1.22 0.71 2.43 SINCE SEP 1 1.93 1.22 0.71 2.43 SINCE JAN 1 29.43 30.44 -1.01 27.02 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 1 -1 0 MONTH TO DATE 0 1 -1 0 SINCE SEP 1 0 1 -1 0 SINCE JUL 1 0 2 -2 0 COOLING YESTERDAY 5 6 -1 1 MONTH TO DATE 101 74 27 56 SINCE SEP 1 101 74 27 56 SINCE JAN 1 1279 1130 149 1308 ................................................................... WIND (MPH) HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION S (170) HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION S (170) AVERAGE WIND SPEED 3.1 SKY COVER AVERAGE SKY COVER 0.8 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 97 2:00 AM LOWEST 54 3:00 PM AVERAGE 76 .......................................................... THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 81 99 1983 MINIMUM TEMPERATURE (F) 60 40 1976 SUNRISE AND SUNSET SEPTEMBER 11 2022.....SUNRISE 6:48 AM EDT SUNSET 7:24 PM EDT SEPTEMBER 12 2022.....SUNRISE 6:49 AM EDT SUNSET 7:23 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$