Mount St. Louis / Moonstone 7-Day Snow Forecast

Mount St. Louis / Moonstone Long-Range Snow Forecast Updated today

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Updated 15 August 2026 10:41 UTC

Long-Range Snow Forecast for Mount St. Louis / Moonstone

Long-range (14 to 45 days) from 15 August.

For Forecast detail, see below.

Mount St. Louis / Moonstone Snow Forecast Highlights

When will there be fresh snow in Mount St. Louis / Moonstone?

Mount St. Louis / Moonstone Snow Forecast Highlights - GEM
Snowfall prediction at mid-mountain (320m)
Next Snow?
There is no snow currently in the forecast for Mount St. Louis / Moonstone.

Long-range Snow Outlook for Mount St. Louis / Moonstone

Snowfall

Snow Line

Max 26℃ 78°F
Min 11℃ 52°F

Snow unlikely

Mount St. Louis / Moonstone Long-Range (2 weeks+) Snow Forecast Outlook

Note :- Mountain weather is extremely dynamic; the forecast below will change. Any forecast snow may move forward or back in the forecast, and predicted snowfall depths will be revised in subsequent updates.

16 Day Weather and Snow Forecast for Mount St. Louis / Moonstone from OpenMeteo(GEM)
	Snow and Weather	Temp Town
Sat 15	Clear sky.	Max 26℃ 78°F Min 13℃ 56°F
Sun 16	Cloudy.	Max 26℃ 78°F Min 17℃ 62°F
Mon 17	Clear sky.	Max 25℃ 76°F Min 18℃ 64°F
Tue 18	Clear sky.	Max 25℃ 77°F Min 16℃ 61°F
Wed 19	Drizzle.	Max 22℃ 72°F Min 17℃ 62°F
Thu 20	Clear sky.	Max 21℃ 70°F Min 15℃ 59°F
Fri 21	Clear sky.	Max 23℃ 72°F Min 11℃ 52°F

No significant snowfall is forecast for this period.

This Snow Forecast for Mount St. Louis / Moonstone, Canada gives the predicted Snowfall and Freezing Levels for the next week.

The forecast snowfall depths given are the likely average accumulations for the Lower and Upper slopes. The actual snow depth in Mount St. Louis / Moonstone, on any given piste or itinerary, may be dramatically different, particularly if the snowfall is accompanied by high winds and/or varying air temperatures.

Snow Forecasts beyond two days ahead are subject to significant change and variable reliability.

Mount St. Louis / Moonstone Snow Forecast updated at 10:41 UTC, next update expected 16:00 UTC.

Ensemble forecast for Mount St. Louis / Moonstone, Canada at 244m

Daily Mean Temperature (yellow line is control)

Daily Total Precipitation (blue line is control)

What are Forecast Ensembles ? Multiple forecasts from running the same weather model with slightly different inputs. The prominent line (the 'control') is the model output from standard inputs, the thinner lines are the variations. Plotted together, they show a range of possible outcomes; the closer they are, the higher the confidence.

How to read Long Range Ensemble Forecasts

These forecasts are from ECMWF EC46, a long-range, low-resolution (area) model. They may not accurately reflect local conditions and should be read as area forecasts, indicating whether the coming weeks are likely to be warmer, colder, wetter, or drier than average.

What to look for?

Temperatures trending downward at the same time as precipitation spikes upward... means snow!

Lines close together indicate a high confidence, while wider spreads signal uncertainty.

Snow Reliability

The resort typically enjoys good snow reliability, with an average snow depth of around 100 cm during peak season. For the latest snow conditions, be sure to check J2Ski for up-to-date information.

Off-Piste Safety in Mount St. Louis / Moonstone

Before skiing or snowboarding off-piste in Mount St. Louis / Moonstone, you must assess the local snow conditions. Always check the local Avalanche Risk Level and ski with appropriate safety equipment.