746 CDUS41 KLWX 180523 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 123 AM EDT MON MAY 18 2020 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 17 2020... CLIMATE NORMAL PERIOD: 1981 TO 2010 CLIMATE RECORD PERIOD: 1960 TO 2020 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 67 5:13 PM 93 1960 75 -8 82 MINIMUM 58 11:59 PM 30 1984 51 7 51 AVERAGE 63 63 0 67 PRECIPITATION (IN) YESTERDAY T 1.22 1970 0.16 -0.16 T MONTH TO DATE 1.62 2.42 -0.80 4.01 SINCE MAR 1 9.17 9.27 -0.10 11.38 SINCE JAN 1 15.74 14.69 1.05 18.84 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 MAR 1 T 3.1 -3.1 1.6 SINCE JUL 1 2.9 22.0 -19.1 26.5 SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 2 4 -2 0 MONTH TO DATE 156 92 64 52 SINCE MAR 1 986 1074 -88 934 SINCE JUL 1 4130 4664 -534 4439 COOLING YESTERDAY 0 2 -2 2 MONTH TO DATE 19 25 -6 33 SINCE MAR 1 22 45 -23 55 SINCE JAN 1 22 45 -23 55 ................................................................... WIND (MPH) HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION E (110) HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION E (90) AVERAGE WIND SPEED 6.2 SKY COVER AVERAGE SKY COVER 0.9 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. LIGHT RAIN RELATIVE HUMIDITY (PERCENT) HIGHEST 81 5:00 AM LOWEST 65 12:00 AM AVERAGE 73 .......................................................... THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 76 91 1987 MINIMUM TEMPERATURE (F) 52 33 1973 SUNRISE AND SUNSET MAY 18 2020...........SUNRISE 5:54 AM EDT SUNSET 8:19 PM EDT MAY 19 2020...........SUNRISE 5:53 AM EDT SUNSET 8:20 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$