Mount St. Louis / Moonstone Snow Report and Forecast
Updated 08 September 2026 20:47 PDT
Snow Forecast for Mount St. Louis / Moonstone
Snow and Weather from 10 September.
For Forecast detail, see below.
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Mount St. Louis / Moonstone Snow Forecast Highlights
When will there be fresh snow in Mount St. Louis / Moonstone?
| Next Snow? | |
|---|---|
| There is no snow currently in the forecast for Mount St. Louis / Moonstone. |
Forecast for today in Mount St. Louis / Moonstone
Max 68°F
Min 58°F
Valley temperatures from an overnight low of 58°F to daytime highs around 68°F
Temperature at BaseTemp at Base
Thu
10
Snow unlikely
Clear sky early, then clear spells later.
Forecast times for Mount St. Louis / Moonstone are in Toronto (Canada/Eastern) time zone.
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Mount St. Louis / Moonstone 7-Day Snow Forecast Overview
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| Thu 10 | Fri 11 | Sat 12 | Sun 13 | Mon 14 | Tue 15 | Wed 16 | |
|---|---|---|---|---|---|---|---|
| Wind | NW F2 | S F2 | NW F3 | SW F3 | |||
| 1,299ft | 66°F
| 67°F
| 75°F
| 68°F
| 63°F
| 71°F
 | 65°F
 |
| NW F2 | S F2 | NW F3 | SW F3 | ||||
| 1,050ft | 67°F
| 68°F
| 76°F
| 69°F
| 63°F
| 72°F
| 66°F
|
| NW F2 | S F2 | NW F3 | SW F3 | ||||
| 801ft | 68°F
| 69°F
| 77°F
| 70°F
| 64°F
| 73°F
| 67°F
|
| Snow Line | |||||||
| Max Town | 68°F | 69°F | 77°F | 70°F | 64°F | 73°F | 67°F |
| Min Town | 58°F | 49°F | 54°F | 63°F | 51°F | 52°F | 57°F |
This table shows the average forecast snowfall, the maximum temperature, and expected general weather at resort, lower and upper mountain levels. For daily forecast details, see below.
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.
Understanding and predicting Snow Conditions in Mount St. Louis / Moonstone
Here are our tips for making the most of a trip to Mount St. Louis / Moonstone, with the help of the J2Ski Snow forecasts and reports. You can find some great skiing in Mount St. Louis / Moonstone, but like any mountain, snow conditions change throughout the season, from day to day, and even from hour to hour.
Whether you’re sticking to the marked pistes or venturing off-piste, here’s what you need to know:
Pistes (Groomers) or Off-Piste
These can be a world apart, regarding snow conditions, even ignoring the difference between the natural terrain features to be found off-piste and the generally controlled surfaces and slopes of a pisted (groomed) run.
- Piste Conditions can range from fresh powder to firm, icy surfaces, particularly after warm spells or a busy day on the mountain with the passage of many skiers.
- Off-Piste Conditions are far more variable. Wind and sun can quickly transform fresh snow into wind crust or slushy layers, whilst cold weather can preserve stashes of powder many days after a snowfall.
WARNING - skiing off-piste (out-of-bounds) at Mount St. Louis / Moonstone is uncontrolled and un-marked slopes are not made safe (from avalanche risk) or patrolled. Always check local advice, know the Avalanche Risk Level, ski with safety kit (and know how to use it), and never ski alone.
Analyzing Weather and Snowfall Forecasts
Whilst no forecast can tell you exactly how snow conditions in Mount St. Louis / Moonstone will develop, checking the forecast regularly should give you an idea of what to expect.
New snowfall can bring fresh powder and refresh the surfaces of pisted runs. Powder can be tracked out quickly at busy times, but in less crowded and shaded areas, fresh snow can linger for days.
Changes in weather conditions, such as milder temperatures, rain or wind, can degrade snow quality. Conversely, cold, stable weather can preserve conditions for extended periods.
Predicting Future Snow Quality
Regularly check our snow and weather forecasts for Mount St. Louis / Moonstone for changes that may affect snow quality. Forecast snowfall depth and recent snowfall are good indicators of what to expect.
Use historical data and recent snow reports to understand past snow conditions and anticipate future changes.