Legendary trek

Grinnell Glacier

Glacier NP, Montana, United States

Best timeJul–Sep

Signature routeGrinnell Glacier Trail

In season~64°F high

Climate3–70°F

Fares from$353

Nearest airportFCA

CurrencyUSD

LanguageEnglish

TimezoneUTC-05:00

On the map

Map showing the location of Grinnell Glacier

Directions (Google Maps) →

Historical monthly weather

Sweet spotPeak Jul–Aug. Go in Sep for similar weather.

Sunny share of daylightJul · 64%

WarmestJul · 70°F

WettestJun

Best windowJul–Sep

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Bar height is the typical daytime high; color shows sunny share of daylight. The shaded months are the ideal window to go.

Weather data & source

2018–2023 averages, not a forecast. Wet days estimate days with at least 1 mm of rain or snow using a calibrated ERA5 threshold. Contains modified Copernicus Climate Change Service information. Weather data by Open-Meteo.com (AWS Open Data, CC BY 4.0). Sunny share of daylight is calibrated from daytime cloud cover. ERA5 via Open-Meteo AWS Open Data

Turquoise glacial lakes beneath a shrinking wall of ice.

Best time to visit

Aim for Jul–Sep, the 3 months that line up best.

The route

The classic way in is the Grinnell Glacier Trail. Nearest airport is FCA.

Pairs well with

Going-to-the-Sun Road

Banff Upper Hot Springs

Frequently asked questions

When is the best time to visit Grinnell Glacier?

The best time to visit Grinnell Glacier is July–September, in Glacier NP, Montana, United States.

Where is Grinnell Glacier?

Grinnell Glacier is in Glacier NP, Montana, United States. The nearest major airport is FCA.

What is Grinnell Glacier known for?

Turquoise glacial lakes beneath a shrinking wall of ice.

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