Boone, IA Climate

Climate Insight: Boone, IA

Boone, Iowa runs an annual average of 48°F, ranging from a mean daily high of 59°F to a mean daily low of 37°F, per NOAA's 1991–2020 climate normals. July is typically the warmest month of the year, while January is the coldest. Drawn from station USC00130807, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.

Boone averages 39.1 inches of precipitation a year, with 35.9 inches typically falling as snow, and that matters as much to daily life here as temperature does. The frost-free season averages 167 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 28 and the first fall freeze near October 12. As for energy demand, 6,921 heating degree days and 799 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Boone scores 59/100 (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.