Idaho local data guide

Average Snowfall in Boise, Idaho

Boise typically receives approximately 17.6 to 19.6 inches of snowfall annually. While the city experiences cold winters, its high-desert climate often results in snow that melts relatively quickly at lower elevations. Most accumulation occurs between November and March, though totals can vary significantly by year and elevation.

Updated with grounded research as of 2026-09-03.

The short answer

The official 1991–2020 climate normal for annual snowfall in the Boise area is 17.6 inches, as reported by the National Weather Service. Long-term historical data from the Boise Air Terminal indicates an average of 19.6 inches. It is important to note that Boise is located in a high-desert environment, which influences both the frequency and the persistence of snow on the ground.

Key facts

Annual Snowfall Normal (1991-2020)
17.6 inches
Historical Average (Boise Air Terminal)
19.6 inches

Elevation and Geography Factors

Snowfall in the Treasure Valley is highly localized and strongly influenced by elevation. While the city floor (approximately 2,500–2,850 feet above sea level) experiences relatively moderate accumulation, the surrounding Boise Foothills and nearby mountain ranges receive significantly higher totals. Residents planning for winter should distinguish between downtown conditions and the higher-elevation areas that supply local recreation.

Seasonal Expectations

Most of Boise's snowfall typically occurs between November and March. Due to the region's dry, high-desert climate, snow in the city often does not persist for long periods; it is common for snow to melt within a day or two, especially in urban areas. This makes winter commuting generally more manageable compared to other northern cities, although occasional winter storms can bring sudden, temporary accumulations.

Year-to-Year Variability

Climate normals represent 30-year averages and provide a baseline for what to expect, but individual winters in Boise often deviate from these figures. Annual totals can fluctuate significantly; some years may see very little snow, while others may experience higher-than-average precipitation depending on regional weather patterns and moisture levels.

Common questions

Is Boise's snowfall typical for Idaho?

Boise generally receives less snowfall than many other regions of Idaho. While southern valley areas typically see 10 to 20 inches, mountainous and northern regions of the state often receive significantly higher amounts, sometimes exceeding 70–100 inches annually.

How soon does snow usually melt in Boise?

Because of Boise's high-desert climate, snow on the valley floor often melts quickly, frequently within a day of falling. This is a common characteristic that distinguishes Boise's winters from wetter, colder regions.

Related Idaho questions

  • What is the average snowfall at Bogus Basin?
  • When is the first snowfall in Boise typically recorded?
  • How does Boise's winter climate affect driving conditions?

Sources and verification