Vergennes, VT Climate

Climate Insight: Vergennes, VT

In Vergennes, Vermont, the NOAA 1991–2020 climate normals put the annual average temperature at 46°F, ranging from a mean daily high of 57°F to a mean daily low of 36°F. July is typically the warmest month of the year, while January is the coldest. As thirty-year averages computed from station USC00438597, these numbers smooth out year-to-year noise into a working baseline for a typical month.

Anyone planning to live, garden, or travel in Vergennes should weigh precipitation alongside temperature: the annual average runs an uncharted amount, predominantly as rainfall. The frost-free season averages 170 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 30 and the first fall freeze near October 17. And on the energy front, 7,345 heating degree days and 563 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Vergennes scores 49/100 (Moderate), 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.