Helena, MT Snowfall B+

First snow Oct 27 · Last snow Apr 14 · 36.2 in/yr · Station: HELENA AIRPORT ASOS

Avg First Snow

Oct 27

Median over 22 seasons 15d early

Avg Last Snow

Apr 14

Median over 22 seasons

Snow Season

170 days

SepJun

Avg Annual Snowfall

36.2 in

Rank #107 of 217 tracked

Latest season (2025–26): first measurable snowfall arrived 15 days earlier than the 30-year normal.

Average Monthly Snowfall (inches)

0.1

Sep

1.7

Oct

5.7

Nov

7.4

Dec

6.3

Jan

7.5

Feb

4.5

Mar

2.6

Apr

0.1

May

Jun

How Helena Compares

Helena snowfall vs Montana and U.S. medians
Measure	Helena	Montana median	U.S. median
Avg annual snowfall	36.2 in	58.2 in	39.1 in
Avg first snowfall	Oct 27	Oct 12	Nov 16
Avg last snowfall	Apr 14	Apr 24	Apr 3
Snow season length	170 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 HELENA AIRPORT ASOS (USW00024144), 4 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.