Sunderland, VT Climate

Climate Insight: Sunderland, VT

An annual average temperature of 46°F, ranging from a mean daily high of 58°F to a mean daily low of 34°F is what the NOAA 1991–2020 climate normals report for Sunderland, Vermont. July is typically the warmest month of the year, while January is the coldest. That baseline comes from station USC00438160 and thirty years of averaging, so it reflects a typical month rather than any one year's swings.

Rainfall (and snow, where it falls) shapes day-to-day life here as much as temperature does. Sunderland sees about 46.9 inches of precipitation a year, with 75.2 inches typically falling as snow. The frost-free season averages 139 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 13 and the first fall freeze near September 29. On the energy side, 7,351 heating degree days and 321 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Sunderland scores 54/100 (Moderate), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above are the practical planning tool: mild highs and lows land in the shoulder seasons, July-driven heat peaks in summer, and January-driven cold sets in over deep winter. These are thirty-year averages, not a forecast - any single year can run warmer, wetter, drier, or cooler than the normal.