Alpine, AZ Climate

Climate Insight: Alpine, AZ

In Alpine, Arizona, the NOAA 1991–2020 climate normals put the annual average temperature at 46°F, ranging from a mean daily high of 62°F to a mean daily low of 29°F. July is typically the warmest month of the year, while January is the coldest. As thirty-year averages computed from station USC00020159, these numbers smooth out year-to-year noise into a working baseline for a typical month.

Alpine averages 20.1 inches of precipitation a year, with 44.8 inches typically falling as snow, and that matters as much to daily life here as temperature does. The frost-free season averages 98 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near June 15 and the first fall freeze near September 21. As for energy demand, 7,040 heating degree days and 23 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Alpine scores 59/100 (Moderate), 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.