Clatskanie, OR Climate

Climate Insight: Clatskanie, OR

The NOAA 1991–2020 climate normals describe Clatskanie, Oregon as a location with an annual average temperature of 51°F, ranging from a mean daily high of 61°F to a mean daily low of 41°F. August is typically the warmest month of the year, while December is the coldest. These thirty-year averages, computed from station USC00351643, smooth out year-to-year variability and give a baseline expectation for typical conditions in any given month.

Clatskanie averages 54.7 inches of precipitation a year, with 2.3 inches typically falling as snow, and that matters as much to daily life here as temperature does. The frost-free season averages 183 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 24 and the first fall freeze near October 24. As for energy demand, 5,268 heating degree days and 105 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Clatskanie scores 63/100 (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.