La Grande Terche 7-Day Snow Forecast

La Grande Terche Long-Range Snow Forecast Updated today

ECMWF IFS

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Updated 20 March 2026 13:40 CDT

Long-Range Snow Forecast for La Grande Terche

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

For Forecast detail, see below.

La Grande Terche Snow Forecast Highlights

When will there be fresh snow in La Grande Terche?

La Grande Terche Snow Forecast Highlights - ECMWF IFS
Snowfall prediction at mid-mountain (1,350m)
Next Snow Expected	22 March
Next Snow Amount	3cm
Next 48 Hours	3cm
Next 7 Days	23cm

Long-range Snow Outlook for La Grande Terche

Snowfall

Snow Line

Max 10℃
Min -6℃

37cm New Snow

Snow Line from 1,577m to resort level (900m).

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La Grande Terche 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 La Grande Terche from OpenMeteo(ECMWF IFS)
	Snow and Weather	Temp Town
Sat 21	Clear sky.	Max 9℃ Min 1℃
Sun 22	1cm to 5cm New Snow Heavy snow showers. Snow Line from 1,577m to resort level (900m).	Max 7℃ Min -1℃
Mon 23	Clear sky.	Max 8℃ Min -1℃
Tue 24	Cloudy.	Max 10℃ Min -2℃
Wed 25	3cm to 10cm New Snow Snow showers at altitude, light rain below. Snow Line from 1,500m to resort level (900m).	Max 7℃ Min -3℃
Thu 26	9cm to 12cm New Snow Heavy snow showers. Snow falling to resort level (900m).	Max 0℃ Min -5℃
Fri 27	5cm to 9cm New Snow Light snow at altitude, light rain showers below. Snow falling to resort level (900m).	Max 0℃ Min -6℃

This Snow Forecast for La Grande Terche, 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 La Grande Terche, 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.

La Grande Terche Snow Forecast updated at 13:40 CDT, next update expected imminently.

Ensemble forecast for La Grande Terche, France at 900m

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.

France Hotels Map

Snow Forecast near La Grande Terche

Snow Forecasts for Ski Resorts near La Grande Terche
Ski Area	48 Hr	7 Day
Portes du Soleil	3cm	36cm
Chamonix	7cm	39cm
Flaine	7cm	39cm
Montriond	3cm	34cm
Saint Jean d'Aulps	3cm	34cm
Samoëns	6cm	38cm
Les Houches	5cm	37cm
Morillon	4cm	40cm

Snow Reliability

La Grande Terche typically enjoys reliable snow cover between December and April, with an average snow depth of around 100 cm. For the latest updates on snowfall conditions, visiting J2Ski is recommended.

Off-Piste Safety in La Grande Terche

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