CDUS41 KBOX 182133 CLIBOS CLIMATE REPORT NATIONAL WEATHER SERVICE BOSTON/NORTON MA 533 PM EDT MON MAY 18 2026 ................................... ...THE BOSTON MA CLIMATE SUMMARY FOR MAY 18 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 70 1207 AM 95 2017 67 3 70 MINIMUM 59 413 AM 37 2002 51 8 59 AVERAGE 65 59 6 65 PRECIPITATION (IN) TODAY 0.00 1.72 2007 0.10 -0.10 T MONTH TO DATE 0.79 1.82 -1.03 3.35 SINCE MAR 1 5.90 9.62 -3.72 10.58 SINCE JAN 1 9.19 16.22 -7.03 15.89 SNOWFALL (IN) TODAY 0.0 0.0 2000 0.0 0.0 0.0 2001 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 TODAY 0 7 -7 0 MONTH TO DATE 126 161 -35 91 SINCE MAR 1 1341 1485 -144 1210 SINCE JUL 1 5468 5423 45 4969 COOLING TODAY 0 1 -1 0 MONTH TO DATE 10 10 0 16 SINCE MAR 1 13 14 -1 22 SINCE JAN 1 13 14 -1 22 ................................................................... WIND (MPH) HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION E (90) HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION E (90) AVERAGE WIND SPEED 10.5 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.6 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED TODAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 67 1200 PM LOWEST 52 300 AM AVERAGE 60 .......................................................... THE BOSTON MA CLIMATE NORMALS FOR TOMORROW NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 67 90 1949 1986 2017 MINIMUM TEMPERATURE (F) 51 38 1882 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. $$