Information regarding summer mountain conditions can be found on the Mountain Conditions Report, published by the Association of Canadian Mountain Guides.
For the most part, the snowpack has settled into a summer-like state, but loose wet avalanches are still possible on hot days in steep alpine terrain.
The deep persistent layer has still been sporadically reactive on hot days in high alpine terrain. Think twice about committing to the big faces unless you have a very good freeze.
Deep persistent slabs are best managed by:
Cornices are best managed by:
Some helpful weather links:
Remote weather stations in Banff, Yoho & Kootenay - Real time, raw, actual weather data.
Avalanche Canada Mountain Weather Forecast - Good for getting an overview of the major weather systems.
SpotWx - Good for a localized forecast
Environment Canada Yoho forecast - Simplified valley bottom forecast for Lake Louise area.
The deep persistent weakness still exists and has been sporadically active on hot days in high alpine terrain. This will be the big thing to consider when deciding whether to get on the bigger snow and ice routes.
In general, avalanche hazard will be greatest during hot sunny days or warm rain. This has the potential to trigger smaller loose wet avalanches and larger wet slab avalanches on the basal weak layer. For current avalanche activity and observations, check out the Mountain Conditions Report