548 CDUS41 KBOX 171355 CLIBOS CLIMATE REPORT NATIONAL WEATHER SERVICE BOSTON/NORTON MA 855 AM EST THU DEC 17 2020 ................................... ...THE BOSTON MA CLIMATE SUMMARY FOR DECEMBER 16 2020... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1872 TO 2020 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 30 1158 PM 64 1971 41 -11 35 MINIMUM 16 736 AM 1 1876 28 -12 32 1883 AVERAGE 23 35 -12 34 PRECIPITATION (IN) YESTERDAY 0.04 1.81 1960 0.12 -0.08 0.00 MONTH TO DATE 2.75 2.05 0.70 3.77 SINCE DEC 1 2.75 2.05 0.70 3.77 SINCE JAN 1 34.62 42.04 -7.42 48.08 SNOWFALL (IN) YESTERDAY 0.4 7.6 2007 0.3 0.1 0.0 MONTH TO DATE 0.7 3.7 -3.0 10.1 SINCE DEC 1 0.7 3.7 -3.0 10.1 SINCE JUL 1 5.0 5.0 0.0 10.1 DEGREE DAYS HEATING YESTERDAY 42 30 12 31 MONTH TO DATE 433 445 -12 428 SINCE DEC 1 433 445 -12 428 SINCE JUL 1 1320 1500 -180 1350 COOLING YESTERDAY 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE DEC 1 0 0 0 0 SINCE JAN 1 924 747 177 1013 ................................................................... WIND (MPH) RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION N (20) HIGHEST WIND SPEED 31 HIGHEST WIND DIRECTION NE (60) HIGHEST GUST SPEED 37 HIGHEST GUST DIRECTION NE (60) AVERAGE WIND SPEED 13.1 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.8 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. LIGHT SNOW FOG RELATIVE HUMIDITY (PERCENT) HIGHEST 78 1100 PM LOWEST 38 1200 AM AVERAGE 58 .......................................................... THE BOSTON MA CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 41 64 2000 MINIMUM TEMPERATURE (F) 28 -4 1876 1919 SUNRISE AND SUNSET DECEMBER 17 2020......SUNRISE 708 AM EST SUNSET 413 PM EST DECEMBER 18 2020......SUNRISE 709 AM EST SUNSET 413 PM EST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$