Kenai, AK Climate

Climate Insight: Kenai, AK

The NOAA 1991–2020 climate normals describe Kenai, Alaska as a location with an annual average temperature of 34°F, ranging from a mean daily high of 45°F to a mean daily low of 24°F. July is typically the warmest month of the year, while January is the coldest. These thirty-year averages, computed from 2 weather stations, smooth out year-to-year variability and give a baseline expectation for typical conditions in any given month.

Precipitation patterns matter as much as temperature for anyone planning to live, garden, or travel here. Kenai receives roughly 18.8 inches of precipitation each year, predominantly as rainfall. The frost-free season averages 99 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near June 1 and the first fall freeze near September 8. For energy use, 11,202 heating degree days and 1 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Kenai scores 44/100 (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, July-driven heat at the peak of summer, and January-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.