Marfa, TX Climate

Climate Insight: Marfa, TX

The NOAA 1991–2020 climate normals describe Marfa, Texas as a location with an annual average temperature of 59°F, ranging from a mean daily high of 76°F to a mean daily low of 43°F. July is typically the warmest month of the year, while January is the coldest. These thirty-year averages, computed from station USC00415596, 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. Marfa sees about an uncharted amount of precipitation a year, predominantly as rainfall. The frost-free season averages 196 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 14 and the first fall freeze near October 27. On the energy side, 3,228 heating degree days and 1,183 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Marfa scores 63/100 (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 July-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.