577 CDUS41 KBOX 180531 CLIBOS CLIMATE REPORT NATIONAL WEATHER SERVICE BOSTON/NORTON MA 131 AM EDT THU SEP 18 2025 ................................... ...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 17 2025... CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 1872 TO 2025 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 70 116 PM 91 1915 73 -3 77 MINIMUM 56 326 AM 44 2013 58 -2 57 AVERAGE 63 65 -2 67 PRECIPITATION (IN) YESTERDAY 0.01 2.77 1995 0.13 -0.12 0.00 MONTH TO DATE 1.44 1.90 -0.46 T SINCE SEP 1 1.44 1.90 -0.46 T SINCE JAN 1 26.39 29.94 -3.55 34.14 SNOWFALL (IN) YESTERDAY 0.0 0.0 2000 0.0 0.0 0.0 2001 2002 MONTH TO DATE 0.0 0.0 0.0 0.0 SINCE SEP 1 0.0 0.0 0.0 0.0 SINCE JUL 1 0.0 0.0 0.0 0.0 DEGREE DAYS HEATING YESTERDAY 2 2 0 0 MONTH TO DATE 18 20 -2 1 SINCE SEP 1 18 20 -2 1 SINCE JUL 1 25 29 -4 3 COOLING YESTERDAY 0 3 -3 2 MONTH TO DATE 35 70 -35 56 SINCE SEP 1 35 70 -35 56 SINCE JAN 1 792 770 22 866 ................................................................... WIND (MPH) RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION NE (50) HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION E (80) HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION NE (50) AVERAGE WIND SPEED 7.7 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.7 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. FOG RELATIVE HUMIDITY (PERCENT) HIGHEST 93 800 PM LOWEST 76 100 PM AVERAGE 85 .......................................................... THE BOSTON MA CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 72 90 1891 1906 1955 MINIMUM TEMPERATURE (F) 58 43 1875 SUNRISE AND SUNSET SEPTEMBER 18 2025.....SUNRISE 627 AM EDT SUNSET 648 PM EDT SEPTEMBER 19 2025.....SUNRISE 629 AM EDT SUNSET 646 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$