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Mount St. Louis / Moonstone 7-Day Snow Forecast - 21st March 2026

Mount St. Louis / Moonstone Snow Forecast - 7 day

GEM
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Updated 21 March 2026 05:51 GMT

7-Day Snow Forecast for Mount St. Louis / Moonstone

1-week from 21 March.

For Forecast detail, see below.

Mount St. Louis / Moonstone 7-Day 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 Expected21 March
Next Snow Amount 1cm 1in
Next 48 Hours 2cm 1in
Next 7 Days 11cm 4in

7-Day Snow Outlook for Mount St. Louis / Moonstone

 
Snowfall

 
Snow Line

Max 4℃ 39°F
Min -12℃ 11°F

10cm 4in New Snow

Snow falling to resort level ( 244m 801ft ).

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Mount St. Louis / Moonstone Medium-Range (7-Day) Snow Forecast Detail

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.

Max 3℃ 38°F
Min -4℃ 24°F

Freeze-thaw (spring snow) conditions, with valley temperatures cooling to -4℃ 24°F and rising to 3℃ 38°F

Temperature at BaseTemp at Base

 
Snowfall

 
Snow Line

Sat
21

1cm 1in New Snow

CloudClearFairCloud

Cloudy first, clear sky then fair, cloudy later.

Snow falling to resort level ( 244m 801ft ).

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

Max 3℃ 37°F
Min -1℃ 31°F

Valley temperatures from an overnight low of -1℃ 31°F to daytime highs around 3℃ 37°F
Freeze-thaw (spring snow) from mid-mountain up.

Temperature at BaseTemp at Base

 
Snowfall

 
Snow Line

Sun
22

Snow unlikely

CloudCloudCloudCloud

Cloudy.

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

Max -1℃ 31°F
Min -6℃ 21°F

Below freezing at all levels, with valley temperatures as low as -6℃ 21°F and not getting above -1℃ 31°F

Temperature at BaseTemp at Base

Mon
23

Snow unlikely

CloudCloudFairMixed

Cloudy, fair, clear spells later.

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

Max 2℃ 35°F
Min -11℃ 11°F

Freeze-thaw (spring snow) conditions, with valley temperatures cooling to -11℃ 11°F and rising to 2℃ 35°F

Temperature at BaseTemp at Base

 
Snowfall

 
Snow Line

Tue
24

Snow unlikely

ClearClearMixedLight Snow

Clear sky, clear spells, light snow later.

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

Max 0℃ 31°F
Min -9℃ 16°F

Below freezing at all levels, with valley temperatures as low as -9℃ 16°F and not getting above 0℃ 31°F

Temperature at BaseTemp at Base

Wed
25

Snow unlikely

MixedMixedFairClear

Clear spells, fair, clear sky later.

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

Max 4℃ 39°F
Min -9℃ 16°F

Freeze-thaw (spring snow) conditions, with valley temperatures cooling to -9℃ 16°F and rising to 4℃ 39°F

Temperature at BaseTemp at Base

 
Snowfall

 
Snow Line

Thu
26

8cm 3in New Snow

FairSnowSnowLight Snow

Fair first, heavy snow showers then snow showers, light snow later.

Snow falling to resort level ( 244m 801ft ).

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

Max -5℃ 24°F
Min -12℃ 11°F

Below freezing at all levels, with valley temperatures as low as -12℃ 11°F and not getting above -5℃ 24°F

Temperature at BaseTemp at Base

Fri
27

Snow unlikely

MixedFairClearClear

Clear spells, fair, clear sky later.

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

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 05:51 GMT, next update expected 11:00 GMT.

Snow Forecast near Mount St. Louis / Moonstone

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

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.