Cape Girardeau Muni, MO Climate

Climate Insight: Cape Girardeau Muni, MO

In Cape Girardeau Muni, Missouri, the NOAA 1991–2020 climate normals put the annual average temperature at 58°F, ranging from a mean daily high of 68°F to a mean daily low of 48°F. July is typically the warmest month of the year, while January is the coldest. As thirty-year averages computed from station USW00003935, these numbers smooth out year-to-year noise into a working baseline for a typical month.

Rainfall (and snow, where it falls) shapes day-to-day life here as much as temperature does. Cape Girardeau Muni sees about 47.9 inches of precipitation a year, predominantly as rainfall. The frost-free season averages 203 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 5 and the first fall freeze near October 25. On the energy side, 4,177 heating degree days and 1,566 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Cape Girardeau Muni scores 78/100 (Good), 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.