Nws Boston/norton, MA Climate

Climate Insight: Nws Boston/norton, MA

The NOAA 1991–2020 climate normals describe Nws Boston/norton, Massachusetts as a location with an annual average temperature of 50°F, ranging from a mean daily high of 60°F to a mean daily low of 40°F. July is typically the warmest month of the year, while January is the coldest. These thirty-year averages, computed from station USC00198368, smooth out year-to-year variability and give a baseline expectation for typical conditions in any given month.

Beyond temperature, Nws Boston/norton averages 49.8 inches of precipitation annually, predominantly as rainfall - a real factor for anyone planning to live, garden, or travel here. The frost-free season averages 177 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 23 and the first fall freeze near October 17. Turning to energy use, 6,094 heating degree days and 661 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Nws Boston/norton scores 64/100 (Good), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above turn that into a planning tool: expect the mildest highs and lows in the shoulder seasons, July-driven heat at the peak of summer, and January-driven cold at the depth of winter. Every number here is a thirty-year average, not a forecast, so any given year can and does run warmer, cooler, wetter, or drier than the normal.