Four Valleys 7-Day Snow Forecast

Four Valleys Long-Range Snow Forecast Updated today

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Updated 20 September 2026 20:44 BST

Long-Range Snow Forecast for Four Valleys

Long-range (14 to 45 days) from 20 September.

For Forecast detail, see below.

Four Valleys Snow Forecast Highlights

When will there be fresh snow in Four Valleys?

Four Valleys Snow Forecast Highlights - ECMWF IFS
Snowfall prediction at mid-mountain (2,205m)
Next Snow?
There is no snow currently in the forecast for Four Valleys.
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Long-range Snow Outlook for Four Valleys

Snowfall

Snow Line

Max 25℃ 77°F
Min 7℃ 44°F

Snow unlikely

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Four Valleys 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 Four Valleys from OpenMeteo(ECMWF IFS)
	Snow and Weather	Temp Town
Sun 20	Cloudy at altitude, clear spells below.	Max 25℃ 77°F Min 12℃ 53°F
Mon 21	Cloudy.	Max 23℃ 73°F Min 12℃ 53°F
Tue 22	Clear sky.	Max 23℃ 74°F Min 12℃ 54°F
Wed 23	Clear sky.	Max 23℃ 73°F Min 11℃ 51°F
Thu 24	Fair.	Max 21℃ 69°F Min 9℃ 49°F
Fri 25	Clear sky.	Max 21℃ 70°F Min 7℃ 44°F
Sat 26	Clear sky.	Max 24℃ 76°F Min 11℃ 52°F

No significant snowfall is forecast for this period.

This Snow Forecast for Four Valleys, Switzerland 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 Four Valleys, 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.

Four Valleys Snow Forecast updated at 20:44 BST, next update expected 02:00 BST.

Ensemble forecast for Four Valleys, Switzerland at 1,080m

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

Four Valleys boasts reliable snow conditions, with average snow depths of 150-300 cm throughout the season. For the latest snow information, including current conditions and forecasts, check J2Ski.

Off-Piste Safety in Four Valleys

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