Great Falls, MT Snowfall A-

First snow Oct 5 · Last snow May 10 · 64.5 in/yr · Station: GREAT FALLS AIRPORT

Avg First Snow

Oct 5

Median over 30 seasons 7d late

Avg Last Snow

May 10

Median over 30 seasons

Snow Season

218 days

SepJun

Avg Annual Snowfall

64.5 in

Rank #50 of 217 tracked

Latest season (2025–26): first measurable snowfall arrived 7 days later than the 30-year normal.

Average Monthly Snowfall (inches)

0.8

Sep

4.2

Oct

9.0

Nov

9.5

Dec

9.1

Jan

10.1

Feb

10.1

Mar

9.5

Apr

1.8

May

0.3

Jun

How Great Falls Compares

Great Falls snowfall vs Montana and U.S. medians
Measure	Great Falls	Montana median	U.S. median
Avg annual snowfall	64.5 in	58.2 in	39.1 in
Avg first snowfall	Oct 5	Oct 12	Nov 16
Avg last snowfall	May 10	Apr 24	Apr 3
Snow season length	218 days	195 days	139 days

Medians are taken across tracked cities with regular snowfall (7 in Montana, 201 nationally).

Nearby Tracked Cities

Ski Resorts in Montana

Data source: NOAA GHCN-Daily records for GREAT FALLS AIRPORT (USW00024143), 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.