Southport, NC Climate

Climate Insight: Southport, NC

Southport, North Carolina runs an annual average of 65°F, ranging from a mean daily high of 77°F to a mean daily low of 54°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 USC00318113, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.

Southport averages 54.6 inches of precipitation a year, predominantly as rainfall, and that matters as much to daily life here as temperature does. The frost-free season averages 238 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near March 24 and the first fall freeze near November 17. As for energy demand, 2,203 heating degree days and 2,232 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Southport scores 78/100 (Good), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above turn that into a planning tool: expect the mildest highs and lows in the shoulder seasons, July-driven heat at the peak of summer, and January-driven cold at the depth of winter. Every number here is a thirty-year average, not a forecast, so any given year can and does run warmer, cooler, wetter, or drier than the normal.