146 CDUS41 KLWX 160535 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 134 AM EDT WED AUG 16 2017 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 15 2017... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1960 TO 2017 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL .................................................................. TEMPERATURE (F) YESTERDAY MAXIMUM 80 513 PM 102 1988 87 -7 96 MINIMUM 67 1144 PM 45 1964 65 2 70 AVERAGE 74 76 -2 83 PRECIPITATION (IN) YESTERDAY 0.38 1.74 1976 0.11 0.27 0.14 MONTH TO DATE 2.42 1.80 0.62 0.21 SINCE JUN 1 12.50 9.45 3.05 9.58 SINCE JAN 1 31.59 26.27 5.32 27.25 SNOWFALL (IN) YESTERDAY 0.0 MM MM 0.0 0.0 MONTH TO DATE 0.0 0.0 0.0 SINCE JUL 1 T 0.0 0.0 SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE JUN 1 6 15 -9 3 SINCE JUL 1 0 0 0 0 COOLING YESTERDAY 9 11 -2 18 MONTH TO DATE 128 166 -38 229 SINCE JUN 1 787 766 21 941 SINCE JAN 1 924 858 66 1039 .................................................................. WIND (MPH) HIGHEST WIND SPEED 8 HIGHEST WIND DIRECTION NE (30) HIGHEST GUST SPEED 10 HIGHEST GUST DIRECTION NE (40) AVERAGE WIND SPEED 3.5 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.8 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. HEAVY RAIN RAIN LIGHT RAIN FOG RELATIVE HUMIDITY (PERCENT) HIGHEST 100 1200 AM LOWEST 85 300 PM AVERAGE 93 .......................................................... THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 87 100 1997 MINIMUM TEMPERATURE (F) 65 46 1979 SUNRISE AND SUNSET AUGUST 16 2017........SUNRISE 624 AM EDT SUNSET 803 PM EDT AUGUST 17 2017........SUNRISE 625 AM EDT SUNSET 802 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$