Les Bossons 7-Day Snow Forecast

Les Bossons Long-Range Snow Forecast Updated today

ECMWF IFS

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Updated 21 March 2026 11:48 AEDT

Long-Range Snow Forecast for Les Bossons

Long-range (14 to 45 days) from 21 March.

For Forecast detail, see below.

Les Bossons Snow Forecast Highlights

When will there be fresh snow in Les Bossons?

Les Bossons Snow Forecast Highlights - ECMWF IFS
Snowfall prediction at mid-mountain (1,215m)
Next Snow Expected	22 March
Next Snow Amount	4cm
Next 48 Hours	4cm
Next 7 Days	23cm

Long-range Snow Outlook for Les Bossons

Snowfall

Snow Line

Max 8℃
Min -7℃

30cm New Snow

Snow Line from 1,035m to resort level (1,020m).

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Les Bossons 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 Les Bossons from OpenMeteo(ECMWF IFS)
	Snow and Weather	Temp Town
Sat 21	Clear sky.	Max 7℃ Min -3℃
Sun 22	3cm to 7cm New Snow Patchy heavy snow at altitude, rain showers below. Snow Line from 1,035m to resort level (1,020m).	Max 6℃ Min -3℃
Mon 23	Clear sky.	Max 7℃ Min -7℃
Tue 24	Cloudy.	Max 8℃ Min -6℃
Wed 25	5cm to 8cm New Snow Snow showers at altitude, patchy rain below. Snow falling to resort level (1,020m).	Max 8℃ Min -4℃
Thu 26	9cm New Snow Heavy snow showers. Snow falling to resort level (1,020m).	Max -1℃ Min -6℃
Fri 27	4cm to 6cm New Snow Light snow. Snow falling to resort level (1,020m).	Max -1℃ Min -5℃

This Snow Forecast for Les Bossons, 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 Les Bossons, 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.

Les Bossons Snow Forecast updated at 11:48 AEDT, next update expected 17:00 AEDT.

Ensemble forecast for Les Bossons, France at 1,020m

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.

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Snow Forecast near Les Bossons

Snow Forecasts for Ski Resorts near Les Bossons
Ski Area	48 Hr	7 Day
Chamonix	7cm	39cm
Flaine	7cm	39cm
Les Houches	7cm	37cm
Les Gets	3cm	36cm
Morzine	3cm	36cm
Avoriaz	4cm	35cm
La Clusaz	2cm	26cm

Snow Reliability

Les Bossons typically enjoys reliable snow conditions, with average depths ranging from 80 to 200 cm throughout the season. For the latest snow info and detailed forecasts, check J2Ski regularly.

Off-Piste Safety in Les Bossons

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