Sioux Rapids, IA Climate

Climate Insight: Sioux Rapids, IA

An annual average temperature of 46°F, ranging from a mean daily high of 56°F to a mean daily low of 37°F is what the NOAA 1991–2020 climate normals report for Sioux Rapids, Iowa. July is typically the warmest month of the year, while January is the coldest. That baseline comes from station USC00137726 and thirty years of averaging, so it reflects a typical month rather than any one year's swings.

Anyone planning to live, garden, or travel in Sioux Rapids should weigh precipitation alongside temperature: the annual average runs 32.0 inches, with 35.2 inches typically falling as snow. The frost-free season averages 158 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 5. And on the energy front, 7,396 heating degree days and 668 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Sioux Rapids 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.