948 CDUS41 KLWX 170529 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1228 AM EST FRI JAN 17 2020 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 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 54 544 AM 65 1974 42 12 41 MINIMUM 35 1159 PM -4 1964 24 11 12 AVERAGE 45 33 12 27 PRECIPITATION (IN) YESTERDAY T 0.64 1991 0.08 -0.08 0.00 MONTH TO DATE 1.45 1.33 0.12 1.13 SINCE DEC 1 4.42 4.29 0.13 6.89 SINCE JAN 1 1.45 1.33 0.12 1.13 SNOWFALL (IN) YESTERDAY T 2.3 1965 0.2 -0.2 MONTH TO DATE 2.0 3.2 -1.2 SINCE JUL 1 2.6 7.2 -4.6 SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 20 32 -12 38 MONTH TO DATE 349 512 -163 464 SINCE DEC 1 1149 1394 -245 1268 SINCE JUL 1 2012 2310 -298 2226 COOLING YESTERDAY 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE DEC 1 0 0 0 0 SINCE JAN 1 0 0 0 0 .................................................................. WIND (MPH) HIGHEST WIND SPEED 37 HIGHEST WIND DIRECTION NW (300) HIGHEST GUST SPEED 50 HIGHEST GUST DIRECTION NW (300) AVERAGE WIND SPEED 18.9 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.5 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. LIGHT SNOW RELATIVE HUMIDITY (PERCENT) HIGHEST 93 1200 AM LOWEST 33 100 PM AVERAGE 63 .......................................................... THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 42 70 1990 MINIMUM TEMPERATURE (F) 24 -7 1982 SUNRISE AND SUNSET JANUARY 17 2020.......SUNRISE 726 AM EST SUNSET 513 PM EST JANUARY 18 2020.......SUNRISE 726 AM EST SUNSET 515 PM EST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$