682 CDUS41 KLWX 160521 CLIDCA CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1221 AM EST FRI DEC 16 2016 ................................... ...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR DECEMBER 15 2016... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1871 TO 2016 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL .................................................................. TEMPERATURE (F) YESTERDAY MAXIMUM 40 1225 AM 71 1971 47 -7 67 MINIMUM 18 1159 PM 6 1904 33 -15 47 AVERAGE 29 40 -11 57 PRECIPITATION (IN) YESTERDAY 0.00 1.38 1901 0.10 -0.10 T MONTH TO DATE 1.56 1.59 -0.03 1.20 SINCE DEC 1 1.56 1.59 -0.03 1.20 SINCE JAN 1 30.65 38.28 -7.63 41.38 SNOWFALL (IN) YESTERDAY 0.0 4.5 1905 0.1 -0.1 MONTH TO DATE 0.0 1.0 -1.0 SINCE JUL 1 0.0 1.5 -1.5 SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 36 25 11 8 MONTH TO DATE 331 349 -18 215 SINCE DEC 1 331 349 -18 215 SINCE JUL 1 818 1044 -226 750 COOLING YESTERDAY 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE DEC 1 0 0 0 0 SINCE JAN 1 1994 1549 445 1998 .................................................................. WIND (MPH) HIGHEST WIND SPEED 33 HIGHEST WIND DIRECTION NW (300) HIGHEST GUST SPEED 51 HIGHEST GUST DIRECTION NW (300) AVERAGE WIND SPEED 17.1 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.3 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 52 300 AM LOWEST 23 1200 PM AVERAGE 38 .......................................................... THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 46 74 1971 MINIMUM TEMPERATURE (F) 32 10 1917 SUNRISE AND SUNSET DECEMBER 16 2016......SUNRISE 720 AM EST SUNSET 448 PM EST DECEMBER 17 2016......SUNRISE 721 AM EST SUNSET 448 PM EST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$