Quincy, CA Climate

Climate Insight: Quincy, CA

The NOAA 1991–2020 climate normals describe Quincy, California as a location with an annual average temperature of 50°F, ranging from a mean daily high of 66°F to a mean daily low of 34°F. July is typically the warmest month of the year, while December is the coldest. These thirty-year averages, computed from station USC00047195, smooth out year-to-year variability and give a baseline expectation for typical conditions in any given month.

Rainfall (and snow, where it falls) shapes day-to-day life here as much as temperature does. Quincy sees about 41.7 inches of precipitation a year, with 28.4 inches typically falling as snow. The frost-free season averages 126 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 22 and the first fall freeze near September 25. On the energy side, 5,728 heating degree days and 283 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Quincy scores 59/100 (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 December-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.