Lafayette, LA Climate

Climate Insight: Lafayette, LA

Lafayette, Louisiana runs an annual average of 68°F, ranging from a mean daily high of 77°F to a mean daily low of 58°F, per NOAA's 1991–2020 climate normals. August is typically the warmest month of the year, while January is the coldest. Drawn from 2 weather stations, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.

Anyone planning to live, garden, or travel in Lafayette should weigh precipitation alongside temperature: the annual average runs 66.8 inches, with seasonal snowfall possible. The frost-free season averages 285 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near February 19 and the first fall freeze near December 1. And on the energy front, 1,510 heating degree days and 2,557 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Lafayette scores 72/100 (Good), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. For planning purposes, look to the monthly tables above: shoulder seasons bring the mildest highs and lows, summer brings August-driven heat, and deep winter brings January-driven cold. Treat every figure here as a thirty-year average rather than a forecast - individual years routinely run warmer, cooler, wetter, or drier than the normal.