Platteville, WI Climate

Climate Insight: Platteville, WI

In Platteville, Wisconsin, the NOAA 1991–2020 climate normals put the annual average temperature at 47°F, ranging from a mean daily high of 56°F to a mean daily low of 37°F. July is typically the warmest month of the year, while January is the coldest. As thirty-year averages computed from station USC00476646, these numbers smooth out year-to-year noise into a working baseline for a typical month.

Platteville averages 40.0 inches of precipitation a year, with 42.8 inches typically falling as snow, and that matters as much to daily life here as temperature does. The frost-free season averages 166 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 13. As for energy demand, 7,260 heating degree days and 634 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Platteville scores 59/100 (Moderate), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. For planning purposes, look to the monthly tables above: shoulder seasons bring the mildest highs and lows, summer brings July-driven heat, and deep winter brings January-driven cold. Treat every figure here as a thirty-year average rather than a forecast - individual years routinely run warmer, cooler, wetter, or drier than the normal.