Menno, SD Climate

Climate Insight: Menno, SD

The NOAA 1991–2020 climate normals describe Menno, South Dakota as a location with an annual average temperature of 48°F, ranging from a mean daily high of 59°F to a mean daily low of 37°F. July is typically the warmest month of the year, while January is the coldest. These thirty-year averages, computed from station USC00395481, smooth out year-to-year variability and give a baseline expectation for typical conditions in any given month.

Rainfall (and snow, where it falls) shapes day-to-day life here as much as temperature does. Menno sees about 25.0 inches of precipitation a year, with 39.2 inches typically falling as snow. The frost-free season averages 156 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 1 and the first fall freeze near October 4. On the energy side, 6,980 heating degree days and 892 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Menno 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.