Grays Rvr Hatchery, WA Climate

Climate Insight: Grays Rvr Hatchery, WA

Based on station USC00453333 feeding NOAA's 1991–2020 climate normals, Grays Rvr Hatchery, Washington averages 52°F a year, ranging from a mean daily high of 63°F to a mean daily low of 40°F. August is typically the warmest month of the year, while December is the coldest. Because these figures are thirty-year averages rather than any single year's readings, they describe the typical month, not a forecast for it.

Grays Rvr Hatchery averages 103.5 inches of precipitation a year, with 2.1 inches typically falling as snow, and that matters as much to daily life here as temperature does. The frost-free season averages 178 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 27 and the first fall freeze near October 22. As for energy demand, 4,985 heating degree days and 112 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Grays Rvr Hatchery scores 49/100 (Moderate), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above are the practical planning tool: mild highs and lows land in the shoulder seasons, August-driven heat peaks in summer, and December-driven cold sets in over deep winter. These are thirty-year averages, not a forecast - any single year can run warmer, wetter, drier, or cooler than the normal.