Aberdeen, WA Climate

Climate Insight: Aberdeen, WA

Aberdeen, Washington runs an annual average of 51°F, ranging from a mean daily high of 58°F to a mean daily low of 44°F, per NOAA's 1991–2020 climate normals. August is typically the warmest month of the year, while December 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.

Rainfall (and snow, where it falls) shapes day-to-day life here as much as temperature does. Aberdeen sees about 84.9 inches of precipitation a year, with negligible snowfall. The frost-free season averages 231 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near March 29 and the first fall freeze near November 15. On the energy side, 5,017 heating degree days and 53 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Aberdeen scores 53/100 (Moderate), 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.