MT Rushmore Nmem, SD Climate

Climate Insight: MT Rushmore Nmem, SD

Based on station USC00395870 feeding NOAA's 1991–2020 climate normals, MT Rushmore Nmem, South Dakota averages 46°F a year, ranging from a mean daily high of 55°F to a mean daily low of 37°F. July is typically the warmest month of the year, while February is the coldest. Because these figures are thirty-year averages rather than any single year's readings, they describe the typical month, not a forecast for it.

Precipitation patterns matter as much as temperature for anyone planning to live, garden, or travel here. MT Rushmore Nmem receives roughly 24.1 inches of precipitation each year, with 59.3 inches typically falling as snow. The frost-free season averages 139 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 15 and the first fall freeze near October 1. For energy use, 7,407 heating degree days and 415 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, MT Rushmore Nmem scores 54/100 (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 February-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.