Oshkosh, WI Climate

Climate Insight: Oshkosh, WI

An annual average temperature of 47°F, ranging from a mean daily high of 55°F to a mean daily low of 38°F is what the NOAA 1991–2020 climate normals report for Oshkosh, Wisconsin. July is typically the warmest month of the year, while January is the coldest. That baseline comes from station USC00476330 and thirty years of averaging, so it reflects a typical month rather than any one year's swings.

Oshkosh averages 33.3 inches of precipitation a year, with 39.2 inches typically falling as snow, and that matters as much to daily life here as temperature does. The frost-free season averages 179 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 24 and the first fall freeze near October 20. As for energy demand, 7,336 heating degree days and 664 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

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