Pittsfield, IL Climate

Climate Insight: Pittsfield, IL

An annual average temperature of 54°F, ranging from a mean daily high of 65°F to a mean daily low of 43°F is what the NOAA 1991–2020 climate normals report for Pittsfield, Illinois. July is typically the warmest month of the year, while January is the coldest. That baseline comes from station USC00116837 and thirty years of averaging, so it reflects a typical month rather than any one year's swings.

Pittsfield averages 40.5 inches of precipitation a year, with 15.6 inches typically falling as snow, and that matters as much to daily life here as temperature does. The frost-free season averages 190 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 14 and the first fall freeze near October 21. As for energy demand, 5,301 heating degree days and 1,252 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Pittsfield scores 68/100 (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.