CDUS41 KBOX 202122 CLIBOS CLIMATE REPORT NATIONAL WEATHER SERVICE BOSTON/NORTON MA 522 PM EDT SUN SEP 20 2026 ................................... ...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 20 2026... VALID TODAY AS OF 0500 PM LOCAL TIME. CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 1872 TO 2026 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) TODAY MAXIMUM 63 348 PM 97 1983 72 -9 65 MINIMUM 55 217 AM 42 1929 57 -2 54 1964 1979 AVERAGE 59 64 -5 60 PRECIPITATION (IN) TODAY T 2.82 1899 0.13 -0.13 0.00 MONTH TO DATE 1.70 2.28 -0.58 1.55 SINCE SEP 1 1.70 2.28 -0.58 1.55 SINCE JAN 1 19.26 30.32 -11.06 26.50 SNOWFALL (IN) TODAY 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 TODAY 6 3 3 5 MONTH TO DATE 20 28 -8 23 SINCE SEP 1 20 28 -8 23 SINCE JUL 1 20 37 -17 30 COOLING TODAY 0 2 -2 0 MONTH TO DATE 77 76 1 45 SINCE SEP 1 77 76 1 45 SINCE JAN 1 994 776 218 802 ................................................................... WIND (MPH) HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SE (150) HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION SE (140) AVERAGE WIND SPEED 8.1 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.9 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED TODAY. LIGHT RAIN RELATIVE HUMIDITY (PERCENT) HIGHEST 78 300 PM LOWEST 64 200 AM AVERAGE 71 .......................................................... THE BOSTON MA CLIMATENORMALS FOR TOMORROW NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 71 94 1895 MINIMUM TEMPERATURE (F) 56 40 1904 1929 SUNRISE AND SUNSET SEPTEMBER 20 2026.....SUNRISE 629 AM EDT SUNSET 645 PM EDT SEPTEMBER 21 2026.....SUNRISE 630 AM EDT SUNSET 643 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$