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Chamonix Sud Snow Forecast - 48 hour - 18th April 2026

Chamonix Sud 48-Hour Snow Forecast

ECMWF IFS
GFS

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Updated 18 April 2026 07:44 UTC

Avalanche Risk

2Avalanche Risk Level 2

Moderate

The overall Avalanche Risk Level in Chamonix was reported as Moderate (Level 2): ALWAYS check local advice before leaving marked runs.

2-Day Forecast for Chamonix Sud

48-hours from 18 April.

See below for forecast detail

Chamonix Sud Snow Forecast updated at 07:44 UTC, next update expected 13:00 UTC.

Forecast for today in Chamonix Sud

Max 16℃ 60°F
Min 3℃ 37°F

Valley temperatures from an overnight low of 3℃ 37°F to daytime highs around 16℃ 60°F
Freeze-thaw (spring snow) from mid-mountain up.

Temperature at BaseTemp at Base

Sat
18

Snow unlikely

FairClearFairCloud

Fair first, clear sky then fair, cloudy later.

Forecast times for Chamonix Sud are in Paris (Europe/Paris) time zone.

Forecast for tomorrow in Chamonix Sud

Max 13℃ 55°F
Min 4℃ 39°F

Valley temperatures from an overnight low of 4℃ 39°F to daytime highs around 13℃ 55°F
Freeze-thaw (spring snow) from mid-mountain up.

Temperature at BaseTemp at Base

 
Snowfall

 
Snow Line

Sun
19

Snow unlikely

CloudCloudFairClear

Cloudy, fair, clear sky later.

Forecast times for Chamonix Sud are in Paris (Europe/Paris) time zone.

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48-hour Forecast Detail

48 Hour Weather and Snow Forecast for Chamonix Sud from OpenMeteo(ECMWF IFS)
BaseSnow toWeatherTemp
Town
Rain or Snow?
Sat02:00Clear

Clear sky. 4℃ 39°F SW
Calm
0%
Sat03:00Clear

Clear sky. 4℃ 39°F SW
Calm
0%
Sat04:00Clear

Clear sky. 3℃ 38°F SW
Calm
0%
Sat05:00Clear

Clear sky. 3℃ 37°F SW
Calm
0%
Sat06:00Fair

Fair. 3℃ 37°F SW
Calm
0%
Sat07:00Cloud

Cloudy. 3℃ 37°F SW
Calm
0%
Sat08:00Cloud

Cloudy. 6℃ 42°F SW
Calm
0%
Sat09:00Clear

Clear sky. 10℃ 49°F SW
Calm
0%
Sat10:00Clear

Clear sky. 12℃ 54°F SW
Calm
0%
Sat11:00Clear

Clear sky. 13℃ 56°F SW
Light
0%
Sat12:00Clear

Fair at altitude.
Clear below.
14℃ 58°F SW
Light
0%
Sat13:00Clear

Fair at altitude.
Clear below.
15℃ 59°F SW
Light
0%
Sat14:00Clear

Clear sky. 16℃ 60°F SW
Light
0%
Sat15:00Clear

Clear sky. 16℃ 60°F SW
Light
0%
Sat16:00Fair

Clear sky at altitude.
Fair below.
15℃ 60°F SW
Light
0%
Sat17:00Fair

Fair. 15℃ 59°F SW
Calm
0%
Sat18:00Clear

Clear sky. 15℃ 58°F SW
Calm
0%
Sat19:00Cloud

Clear spells at altitude.
Cloud below.
13℃ 56°F SW
Calm
0%
Sat20:00Cloud

Cloudy. 11℃ 52°F SW
Calm
0%
Sat21:00Clear

Fair at altitude.
Clear below.
9℃ 48°F SW
Calm
0%
Sat22:00Mixed

Clear spells. 7℃ 45°F SW
Calm
0%
Sat23:00Cloud

Clear spells at altitude.
Cloud below.
6℃ 43°F SW
Calm
0%
Sun00:00Cloud

Cloudy. 6℃ 42°F SW
Calm
0%
Sun01:00Cloud

Cloudy. 5℃ 42°F SW
Calm
0%
Sun02:00Cloud

Clear spells at altitude.
Cloud below.
5℃ 42°F SW
Calm
0%
Sun03:00Cloud

Cloudy. 5℃ 41°F SW
Calm
0%
Sun04:00Cloud

Cloudy. 6℃ 42°F SW
Calm
0%
Sun05:00Cloud

Clear spells at altitude.
Cloud below.
6℃ 42°F SW
Calm
0%
Sun06:00Cloud

Cloudy. 6℃ 43°F SW
Calm
5%
Sun07:00Cloud

Clear spells at altitude.
Cloud below.
6℃ 43°F SW
Calm
10%
Sun08:00Mixed

Cloudy at altitude.
Mixed below.
7℃ 44°F SW
Calm
15%
Sun09:00Lt Drizzle

Light snow at altitude.
Lt drizzle below.
9℃ 47°F SW
Calm
15%
Sun10:00Cloud

Cloudy. 11℃ 52°F SW
Calm
10%
Sun11:00Cloud

Cloudy. 12℃ 54°F SW
Light
10%
Sun12:00Cloud

Cloudy. 13℃ 54°F SW
Light
20%
Sun13:00Fair

Clear spells at altitude.
Fair below.
13℃ 55°F SW
Light
35%
Sun14:00Fair

Fair. 12℃ 53°F SW
Light
45%
Sun15:00Fair

Clear sky at altitude.
Fair below.
11℃ 52°F SW
Light
45%
Sun16:00Fair

Light snow at altitude.
Lt rain below.
11℃ 52°F SW
Light
40%
Sun17:00Fair

Clear sky at altitude.
Fair below.
11℃ 51°F SW
Light
35%
Sun18:00Clear

Clear sky. 11℃ 51°F SW
Light
25%
Sun19:00Fair

Clear sky at altitude.
Fair below.
10℃ 50°F SW
Light
15%
Sun20:00Fair

Fair. 9℃ 48°F SW
Calm
5%
Sun21:00Fair

Clear sky at altitude.
Fair below.
7℃ 45°F SW
Calm
0%
Sun22:00Clear

Clear sky. 5℃ 42°F SW
Calm
0%
Sun23:00Clear

Clear sky. 4℃ 39°F SW
Calm
0%
Mon00:00Clear

Clear sky. 3℃ 37°F SW
Calm
0%
Mon01:00Clear

Clear sky. 3℃ 37°F SW
Light
0%

Snow Forecast near Chamonix Sud

Snow forecasts for nearby ski areas.

Snow Forecasts for Ski Resorts near Chamonix Sud
Ski Area 48 Hr 7 DaySaSuMoTuWeThFr
Les Arcs 1cm - 1cm -

Chamonix Sud Snow

For current snow depths and skiing conditions, see our Current Snow Report for Chamonix Sud.

This Snow Forecast for Chamonix Sud, France 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 Chamonix Sud, 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.

Snow Reliability

Chamonix Sud generally sees a snow depth of around 180 cm in winter, with reliable snowfall throughout the season. For the latest snow conditions, including updates on snowmelt and depth, visit J2Ski.