Chamonix 7-Day Snow Forecast

Chamonix Long-Range Snow Forecast Updated today

ECMWF IFS

GFS

PROSubscribe to Switch Weather Model

Updated 21 September 2026 05:45 PDT

Long-Range Snow Forecast for Chamonix

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

For Forecast detail, see below.

Chamonix Snow Forecast Highlights

When will there be fresh snow in Chamonix?

Chamonix Snow Forecast Highlights - ECMWF IFS
Snowfall prediction at mid-mountain (8,005ft)
Next Snow?
There is no snow currently in the forecast for Chamonix.
Save on Ski Hire	Save up to 50%
Find a Ski Instructor	Book Lessons

Long-range Snow Outlook for Chamonix

Snowfall

Snow Line

Max 76°F
Min 47°F

Snow unlikely

Partner Offers

Chamonix 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 Chamonix from OpenMeteo(ECMWF IFS)
	Snow and Weather	Temp Town
Mon 21	Cloudy.	Max 70°F Min 50°F
Tue 22	Clear sky.	Max 71°F Min 51°F
Wed 23	Clear sky.	Max 69°F Min 51°F
Thu 24	Clear spells.	Max 70°F Min 47°F
Fri 25	Cloudy.	Max 72°F Min 48°F
Sat 26	Clear sky.	Max 74°F Min 53°F
Sun 27	Clear sky.	Max 76°F Min 53°F

No significant snowfall is forecast for this period.

This Snow Forecast for Chamonix, 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, 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.

Chamonix Snow Forecast updated at 05:45 PDT, next update expected imminently.

Ensemble forecast for Chamonix, France at 3,412ft

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.

Snow Reliability

Chamonix typically enjoys reliable snowfall, with an average snow depth of 80-200 cm throughout the season. For the latest snow conditions, be sure to check J2Ski for up-to-date information.

Off-Piste Safety in Chamonix

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