493 CDUS41 KBOX 180526 CLIBOS CLIMATE REPORT NATIONAL WEATHER SERVICE BOSTON/NORTON MA 1226 AM EST MON DEC 18 2023 ................................... ...THE BOSTON MA CLIMATE SUMMARY FOR DECEMBER 17 2023... CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 1872 TO 2023 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 56 1159 PM 64 2000 42 14 43 MINIMUM 40 1228 AM -4 1876 29 11 35 1919 AVERAGE 48 35 13 39 PRECIPITATION (IN) YESTERDAY 0.37 2.82 1970 0.14 0.23 0.15 MONTH TO DATE 3.60 2.44 1.16 2.60 SINCE DEC 1 3.60 2.44 1.16 2.60 SINCE JAN 1 47.26 41.73 5.53 30.10 SNOWFALL (IN) YESTERDAY 0.0 12.7 2020 0.3 -0.3 T MONTH TO DATE 0.2 4.0 -3.8 1.0 SINCE DEC 1 0.2 4.0 -3.8 1.0 SINCE JUL 1 0.2 4.9 -4.7 1.0 DEGREE DAYS HEATING YESTERDAY 17 30 -13 26 MONTH TO DATE 379 468 -89 432 SINCE DEC 1 379 468 -89 432 SINCE JUL 1 1283 1482 -199 1229 COOLING YESTERDAY 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE DEC 1 0 0 0 0 SINCE JAN 1 860 800 60 1033 ................................................................... WIND (MPH) RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION E (100) HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION E (110) HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION E (110) AVERAGE WIND SPEED 9.7 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 1.0 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. HEAVY RAIN RAIN LIGHT RAIN FOG RELATIVE HUMIDITY (PERCENT) HIGHEST 100 800 PM LOWEST 73 400 AM AVERAGE 87 .......................................................... THE BOSTON MA CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 42 61 1915 1928 1990 MINIMUM TEMPERATURE (F) 29 -6 1919 SUNRISE AND SUNSET DECEMBER 18 2023......SUNRISE 708 AM EST SUNSET 413 PM EST DECEMBER 19 2023......SUNRISE 709 AM EST SUNSET 414 PM EST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$