Terrell Muni, TX Climate

Climate Insight: Terrell Muni, TX

In Terrell Muni, Texas, the NOAA 1991–2020 climate normals put the annual average temperature at 66°F, ranging from a mean daily high of 77°F to a mean daily low of 55°F. August is typically the warmest month of the year, while January is the coldest. As thirty-year averages computed from station USW00053911, these numbers smooth out year-to-year noise into a working baseline for a typical month.

Terrell Muni averages 38.4 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 252 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near March 11 and the first fall freeze near November 18. As for energy demand, 2,211 heating degree days and 2,738 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Terrell Muni scores 92/100 (Excellent), 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, August-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.