Ketchum, ID Snowfall A

First snow Nov 5 · Last snow Apr 18 · 100.5 in/yr · Station: KETCHUM RANGER STATION

Avg First Snow

Nov 5

Median over 23 seasons 33d late

Avg Last Snow

Apr 18

Median over 23 seasons

Snow Season

165 days

SepJun

Avg Annual Snowfall

100.5 in

Rank #19 of 217 tracked

Latest season (2025–26): first measurable snowfall arrived 33 days later than the 30-year normal.

Average Monthly Snowfall (inches)

Sep

1.5

Oct

10.9

Nov

31.2

Dec

26.1

Jan

15.9

Feb

11.1

Mar

3.7

Apr

0.2

May

Jun

How Ketchum Compares

Ketchum snowfall vs Idaho and U.S. medians
Measure	Ketchum	Idaho median	U.S. median
Avg annual snowfall	100.5 in	35.6 in	39.1 in
Avg first snowfall	Nov 5	Nov 5	Nov 16
Avg last snowfall	Apr 18	Mar 31	Apr 3
Snow season length	165 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 KETCHUM RANGER STATION (USC00104845), 0 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.