St François Longchamp 7-Day Snow Forecast

St François Longchamp Long-Range Snow Forecast Updated today

ECMWF IFS

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Updated 20 September 2026 17:40 PDT

Long-Range Snow Forecast for St François Longchamp

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

For Forecast detail, see below.

St François Longchamp Snow Forecast Highlights

When will there be fresh snow in St François Longchamp?

St François Longchamp Snow Forecast Highlights - ECMWF IFS
Snowfall prediction at mid-mountain (6,562ft)
Next Snow?
There is no snow currently in the forecast for St François Longchamp.
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Long-range Snow Outlook for St François Longchamp

Snowfall

Snow Line

Max 67°F
Min 38°F

Snow unlikely

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St François Longchamp 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 St François Longchamp from OpenMeteo(ECMWF IFS)
	Snow and Weather	Temp Town
Mon 21	Cloudy.	Max 63°F Min 44°F
Tue 22	Clear sky.	Max 63°F Min 40°F
Wed 23	Clear sky.	Max 64°F Min 44°F
Thu 24	Clear sky.	Max 65°F Min 42°F
Fri 25	Clear sky.	Max 62°F Min 38°F
Sat 26	Clear sky.	Max 67°F Min 42°F
Sun 27	Clear spells.	Max 67°F Min 40°F

No significant snowfall is forecast for this period.

This Snow Forecast for St François Longchamp, 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 St François Longchamp, 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.

St François Longchamp Snow Forecast updated at 17:40 PDT, next update expected imminently.

Ensemble forecast for St François Longchamp, France at 4,757ft

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 Accommodation (Apartments, Chalets, Hotels) Map

Snow Reliability

The resort typically enjoys 150-200 cm of snow depth, with consistent snowfall from December to April. For the latest snow reports, be sure to check J2Ski for up-to-date information.

Off-Piste Safety in St François Longchamp

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