Stamford, CT Climate

Climate Insight: Stamford, CT

In Stamford, Connecticut, the NOAA 1991–2020 climate normals put the annual average temperature at 53°F, ranging from a mean daily high of 62°F to a mean daily low of 43°F. July is typically the warmest month of the year, while January is the coldest. As thirty-year averages computed from station USC00067970, these numbers smooth out year-to-year noise into a working baseline for a typical month.

Stamford averages 51.6 inches of precipitation a year, with 34.0 inches typically falling as snow, and that matters as much to daily life here as temperature does. The frost-free season averages 189 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 17 and the first fall freeze near October 23. As for energy demand, 5,358 heating degree days and 858 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Stamford scores 53/100 (Moderate), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Shoulder seasons bring the mildest highs and lows in the monthly tables above, summer brings July-driven heat, and winter brings January-driven cold - use that rhythm for planning. These figures are thirty-year averages rather than forecasts, so a specific year may still run warmer, cooler, wetter, or drier than what's shown.