Boise, ID Snowfall B

First snow Nov 21 · Last snow Mar 14 · 17.9 in/yr · Station: BOISE AIR TERMINAL

Avg First Snow

Nov 21

Median over 30 seasons 9d late

Avg Last Snow

Mar 14

Median over 30 seasons

Snow Season

114 days

SepJun

Avg Annual Snowfall

17.9 in

Rank #150 of 217 tracked

Latest season (2025–26): first measurable snowfall arrived 9 days later than the 30-year normal.

Average Monthly Snowfall (inches)

Sep

0.1

Oct

1.9

Nov

6.0

Dec

5.3

Jan

3.3

Feb

1.2

Mar

0.1

Apr

May

Jun

How Boise Compares

Boise snowfall vs Idaho and U.S. medians
Measure	Boise	Idaho median	U.S. median
Avg annual snowfall	17.9 in	35.6 in	39.1 in
Avg first snowfall	Nov 21	Nov 5	Nov 16
Avg last snowfall	Mar 14	Mar 31	Apr 3
Snow season length	114 days	147 days	139 days

Medians are taken across tracked cities with regular snowfall (5 in Idaho, 201 nationally).

Nearby Tracked Cities

Ski Resorts in Idaho

Data source: NOAA GHCN-Daily records for BOISE AIR TERMINAL (USW00024131), 7 km from the city center, accessed via the ACIS web service. Normals window: 1990–91 through 2019–20 snow seasons. Measurable snow = ≥ 0.1 in.