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Mount St. Louis / Moonstone Snow Forecast - 48 hour - 21st March 2026

Mount St. Louis / Moonstone 48-Hour Snow Forecast

GEM
GFS

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Updated 20 March 2026 10:46 PDT

2-Day Forecast for Mount St. Louis / Moonstone

48-hours from 21 March.

See below for forecast detail

Mount St. Louis / Moonstone Snow Forecast updated at 10:46 PDT, next update expected imminently.

Forecast for today in Mount St. Louis / Moonstone

Max 38°F
Min 30°F

Freeze-thaw (spring snow) conditions, with valley temperatures cooling to 30°F and rising to 38°F

Temperature at BaseTemp at Base

 
Snowfall

 
Snow Line

Sat
21

1in New Snow

CloudCloudMixedSnow

Cloudy, clear spells, heavy snow showers later.

Snow falling to resort level (801ft).

Forecast times for Mount St. Louis / Moonstone are in Toronto (Canada/Eastern) time zone.

Forecast for tomorrow in Mount St. Louis / Moonstone

Max 41°F
Min 31°F

Valley temperatures from an overnight low of 31°F to daytime highs around 41°F
Freeze-thaw (spring snow) conditions up high.

Temperature at BaseTemp at Base

 
Snowfall

 
Snow Line

Sun
22

Snow unlikely

SnowCloudShwrsCloud

Snow showers first, cloudy then rain showers, cloudy later.

Forecast times for Mount St. Louis / Moonstone are in Toronto (Canada/Eastern) time zone.

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48-hour Forecast Detail

48 Hour Weather and Snow Forecast for Mount St. Louis / Moonstone from OpenMeteo(GEM)
BaseSnow toWeatherTemp
Town
Rain or Snow?
Sat00:00Cloud

Cloudy.31°FSW
Light
0%
Sat01:00Cloud

Cloudy.31°FSW
Light
0%
Sat02:00Cloud

Cloudy.31°FSW
Light
0%
Sat03:00Cloud

Cloudy.31°FSW
Light
0%
Sat04:00Cloud

Cloudy.31°FSW
Light
0%
Sat05:00Cloud

Cloudy.30°FSW
Light
0%
Sat06:00Cloud

Cloudy.30°FSW
Light
0%
Sat07:00Cloud

Cloudy.30°FSW
Light
0%
Sat08:00Mixed

Clear spells.30°FSW
Light
0%
Sat09:00Mixed

Clear spells.31°FSW
Light
0%
Sat10:00Fair

Fair.33°FSW
Light
0%
Sat11:00Clear

Clear sky.36°FSW
Light
0%
Sat12:00Mixed

Clear spells.37°FSW
Light
0%
Sat13:00Cloud

Cloudy.37°FSW
Light
0%
Sat14:00Fair

Fair.38°FSW
Light
0%
Sat15:00Cloud

Cloudy.38°FSW
Light
0%
Sat16:00Cloud

Cloudy.37°FSW
Light
0%
Sat17:00Cloud

Cloudy.34°FSW
Light
5%
Sat18:00Hvy Snow

1in New Snow
Snow falling to resort level (801ft).

Heavy snow.32°FSW
Light
25%
Sat19:00Hvy Snow

New Snow
Snow falling to resort level (801ft).

Heavy snow.32°FSW
Light
50%
Sat20:00Snow

Heavy snow showers.32°FSW
Light
70%
Sat21:00Mixed

Clear spells.32°FSW
Light
75%
Sat22:00Snow

Heavy snow showers.32°FSW
Light
75%
Sat23:00Mixed

Clear spells.32°FSW
Light
75%
Sun00:00Mixed

Clear spells.32°FSE
Light
75%
Sun01:00Light Snow

Light snow.32°FSE
Light
80%
Sun02:00Lt Drizzle

Light snow at altitude.
Lt drizzle below.
32°FSE
Light
75%
Sun03:00Cloud

Cloudy.32°FSE
Light
70%
Sun04:00Cloud

Cloudy.32°FSE
Light
60%
Sun05:00Cloud

Cloudy.32°FSE
Light
50%
Sun06:00Cloud

Cloudy.33°FSE
Light
45%
Sun07:00Cloud

Cloudy.34°FSE
Light
35%
Sun08:00Lt Rain

Light rain.36°FSE
Light
35%
Sun09:00Hvy Drizzle

Heavy drizzle.40°FSE
Light
40%
Sun10:00Lt Rain

Light rain showers.40°FSE
Light
55%
Sun11:00Lt Rain

Light rain showers.39°FSE
Light
60%
Sun12:00Hvy Drizzle

Heavy drizzle.39°FSE
Light
60%
Sun13:00Hvy Drizzle

Heavy drizzle.39°FSE
Light
50%
Sun14:00Cloud

Cloudy.41°FSE
Light
45%
Sun15:00Cloud

Cloudy.41°FSE
Light
40%
Sun16:00Cloud

Cloudy.40°FSE
Breeze
35%
Sun17:00Cloud

Cloudy.40°FSE
Breeze
35%
Sun18:00Cloud

Cloudy.40°FSE
Light
40%
Sun19:00Mixed

Clear spells.38°FSE
Light
45%
Sun20:00Cloud

Cloudy.35°FSE
Breeze
50%
Sun21:00Cloud

Cloudy.33°FSE
Breeze
55%
Sun22:00Cloud

Cloudy.32°FSE
Light
50%
Sun23:00Cloud

Cloudy.31°FSE
Light
50%

Snow Forecast near Mount St. Louis / Moonstone

Snow forecasts for nearby ski areas.

Snow Forecasts for Ski Resorts near Mount St. Louis / Moonstone
Ski Area 48 Hr 7 DaySaSuMoTuWeThFr
Snow Valley Barrie- 3in

Mount St. Louis / Moonstone Snow

For current snow depths and skiing conditions, see our Current Snow Report for Mount St. Louis / Moonstone.

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 trail 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.

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.