Newhall, CA Climate

Climate Insight: Newhall, CA

In Newhall, California, the NOAA 1991–2020 climate normals put the annual average temperature at 66°F, ranging from a mean daily high of 78°F to a mean daily low of 53°F. August is typically the warmest month of the year, while December is the coldest. As thirty-year averages computed from station USC00046161, these numbers smooth out year-to-year noise into a working baseline for a typical month.

Newhall averages 16.8 inches of precipitation a year, with negligible snowfall, and that matters as much to daily life here as temperature does. The frost-free season averages -7 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near January 8 and the first fall freeze near January 1. As for energy demand, 1,677 heating degree days and 1,902 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Newhall scores 79/100 (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, August-driven heat at the peak of summer, and December-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.