Newhalem, WA Climate

Climate Insight: Newhalem, WA

Based on station USC00455840 feeding NOAA's 1991–2020 climate normals, Newhalem, Washington averages 50°F a year, ranging from a mean daily high of 58°F to a mean daily low of 42°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.

Precipitation patterns matter as much as temperature for anyone planning to live, garden, or travel here. Newhalem receives roughly 78.8 inches of precipitation each year, with 29.5 inches typically falling as snow. The frost-free season averages 226 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 2 and the first fall freeze near November 14. For energy use, 5,644 heating degree days and 257 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Newhalem scores 43/100 (Moderate), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. For planning purposes, look to the monthly tables above: shoulder seasons bring the mildest highs and lows, summer brings August-driven heat, and deep winter brings December-driven cold. Treat every figure here as a thirty-year average rather than a forecast - individual years routinely run warmer, cooler, wetter, or drier than the normal.