Napoleon, ND Climate

Climate Insight: Napoleon, ND

Napoleon, North Dakota runs an annual average of 41°F, ranging from a mean daily high of 52°F to a mean daily low of 30°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 USC00326255, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.

Napoleon averages 20.7 inches of precipitation a year, with 53.2 inches typically falling as snow, and that matters as much to daily life here as temperature does. The frost-free season averages 138 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 13 and the first fall freeze near September 28. As for energy demand, 9,065 heating degree days and 441 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Napoleon scores 44/100 (Moderate), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Use the monthly tables above to plan around specific windows, shoulder seasons for mild highs and lows, peak summer for July-driven heat, or deep winter for January-driven cold. All figures here are thirty-year averages: any single year may run warmer, wetter, drier, or cooler than the normal, so treat them as planning guidance rather than forecasts.