645 CDUS41 KLWX 180524 CLIDCA CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1224 AM EST FRI DEC 18 2015 ................................... ...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR DECEMBER 17 2015... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1871 TO 2015 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL .................................................................. TEMPERATURE (F) YESTERDAY MAXIMUM 54 855 PM 64 1984 46 8 58 1939 MINIMUM 47 326 AM 10 1876 32 15 40 AVERAGE 51 39 12 49 PRECIPITATION (IN) YESTERDAY 0.42 2.43 1888 0.10 0.32 0.00 MONTH TO DATE 1.62 1.78 -0.16 2.08 SINCE DEC 1 1.62 1.78 -0.16 2.08 SINCE JAN 1 41.80 38.47 3.33 42.99 SNOWFALL (IN) YESTERDAY 0.0 11.5 1932 0.1 -0.1 MONTH TO DATE 0.0 1.1 -1.1 SINCE JUL 1 0.0 1.6 -1.6 SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 14 26 -12 16 MONTH TO DATE 245 401 -156 343 SINCE DEC 1 245 401 -156 343 SINCE JUL 1 780 1096 -316 950 COOLING YESTERDAY 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE DEC 1 0 0 0 0 SINCE JAN 1 1998 1549 449 1712 .................................................................. WIND (MPH) HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION NW (320) HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION NW (320) AVERAGE WIND SPEED 3.5 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.9 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. LIGHT RAIN FOG RELATIVE HUMIDITY (PERCENT) HIGHEST 100 200 PM LOWEST 86 1200 AM AVERAGE 93 .......................................................... THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 46 74 2006 MINIMUM TEMPERATURE (F) 32 10 1926 1919 SUNRISE AND SUNSET DECEMBER 18 2015......SUNRISE 721 AM EST SUNSET 448 PM EST DECEMBER 19 2015......SUNRISE 722 AM EST SUNSET 449 PM EST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$