CDUS41 KBOX 180834 CLIBOS CLIMATE REPORT NATIONAL WEATHER SERVICE BOSTON/NORTON MA 434 AM EDT MON MAY 18 2026 ................................... ...THE BOSTON MA CLIMATE SUMMARY FOR MAY 17 2026... 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) YESTERDAY MAXIMUM 90 MM 92 1977 67 23 76 2017 MINIMUM 59 MM 39 1882 51 8 61 AVERAGE 75 59 16 69 PRECIPITATION (IN) YESTERDAY 0.02 1.88 1916 0.09 -0.07 T MONTH TO DATE 0.79 1.72 -0.93 3.35 SINCE MAR 1 5.90 9.52 -3.62 10.58 SINCE JAN 1 9.19 16.12 -6.93 15.89 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 MAR 1 1.9 10.6 -8.7 T SINCE JUL 1 62.8 49.2 13.6 28.1 DEGREE DAYS HEATING YESTERDAY 0 7 -7 0 MONTH TO DATE 126 154 -28 91 SINCE MAR 1 1341 1478 -137 1210 SINCE JUL 1 5468 5416 52 4969 COOLING YESTERDAY 10 1 9 4 MONTH TO DATE 10 9 1 16 SINCE MAR 1 13 13 0 22 SINCE JAN 1 13 13 0 22 ................................................................... WIND (MPH) RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION W (260) HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION SW (220) HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION W (250) AVERAGE WIND SPEED 11.5 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.4 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. LIGHT RAIN RELATIVE HUMIDITY (PERCENT) HIGHEST 80 300 AM LOWEST 25 500 PM AVERAGE 53 .......................................................... THE BOSTON MA CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 67 95 2017 MINIMUM TEMPERATURE (F) 51 37 2002 SUNRISE AND SUNSET MAY 18 2026...........SUNRISE 520 AM EDT SUNSET 802 PM EDT MAY 19 2026...........SUNRISE 519 AM EDT SUNSET 803 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$