758 CDUS41 KLWX 170531 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 131 AM EDT FRI APR 17 2020 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 16 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 52 4:52 PM 91 2002 67 -15 68 MINIMUM 33 11:37 PM 28 1981 42 -9 41 AVERAGE 43 55 -12 55 PRECIPITATION (IN) YESTERDAY 0.00 2.43 1993 0.11 -0.11 0.00 MONTH TO DATE 2.79 1.88 0.91 0.97 SINCE MAR 1 4.78 5.26 -0.48 5.52 SINCE JAN 1 11.35 10.68 0.67 12.98 SNOWFALL (IN) YESTERDAY 0.0 T 1988 0.1 -0.1 0.0 MONTH TO DATE T 0.3 -0.3 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 MM DEGREE DAYS HEATING YESTERDAY 22 11 11 10 MONTH TO DATE 190 212 -22 156 SINCE MAR 1 638 859 -221 840 SINCE JUL 1 3782 4449 -667 4345 COOLING YESTERDAY 0 1 -1 0 MONTH TO DATE 0 4 -4 12 SINCE MAR 1 3 7 -4 12 SINCE JAN 1 3 7 -4 12 ................................................................... WIND (MPH) HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION W (290) HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION NW (310) AVERAGE WIND SPEED 10.7 SKY COVER AVERAGE SKY COVER 0.4 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 64 11:00 PM LOWEST 26 5:00 PM AVERAGE 45 .......................................................... THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 67 93 2002 MINIMUM TEMPERATURE (F) 43 27 1983 SUNRISE AND SUNSET APRIL 17 2020.........SUNRISE 6:30 AM EDT SUNSET 7:49 PM EDT APRIL 18 2020.........SUNRISE 6:28 AM EDT SUNSET 7:50 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$