Seward, AK Climate

Climate Insight: Seward, AK

The NOAA 1991–2020 climate normals describe Seward, Alaska as a location with an annual average temperature of 40°F, ranging from a mean daily high of 46°F to a mean daily low of 35°F. July is typically the warmest month of the year, while January is the coldest. These thirty-year averages, computed from 3 weather stations, smooth out year-to-year variability and give a baseline expectation for typical conditions in any given month.

Rainfall (and snow, where it falls) shapes day-to-day life here as much as temperature does. Seward sees about 69.7 inches of precipitation a year, with seasonal snowfall possible. The frost-free season averages 158 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 2 and the first fall freeze near October 7. On the energy side, 8,960 heating degree days and 9 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Seward scores 34/100 (Below Average), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Use the monthly tables above to plan around specific windows, shoulder seasons for mild highs and lows, peak summer for July-driven heat, or deep winter for January-driven cold. All figures here are thirty-year averages: any single year may run warmer, wetter, drier, or cooler than the normal, so treat them as planning guidance rather than forecasts.