785 CDUS41 KLWX 210524 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 124 AM EDT THU MAY 21 2020 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 20 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 64 3:07 PM 93 1996 76 -12 88 MINIMUM 50 11:00 PM 36 2002 52 -2 69 AVERAGE 57 64 -7 79 PRECIPITATION (IN) YESTERDAY 0.00 1.86 2005 0.15 -0.15 T MONTH TO DATE 1.62 2.87 -1.25 4.04 SINCE MAR 1 9.17 9.72 -0.55 11.41 SINCE JAN 1 15.74 15.14 0.60 18.87 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 8 3 5 0 MONTH TO DATE 171 103 68 52 SINCE MAR 1 1001 1085 -84 934 SINCE JUL 1 4145 4675 -530 4439 COOLING YESTERDAY 0 3 -3 14 MONTH TO DATE 19 33 -14 66 SINCE MAR 1 22 53 -31 88 SINCE JAN 1 22 53 -31 88 ................................................................... WIND (MPH) HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION E (90) HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION E (100) AVERAGE WIND SPEED 12.9 SKY COVER AVERAGE SKY COVER 0.9 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 69 10:00 PM LOWEST 34 12:00 AM AVERAGE 52 .......................................................... THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 76 92 1996 MINIMUM TEMPERATURE (F) 53 33 1992 SUNRISE AND SUNSET MAY 21 2020...........SUNRISE 5:52 AM EDT SUNSET 8:21 PM EDT MAY 22 2020...........SUNRISE 5:51 AM EDT SUNSET 8:22 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$