Winterhorn 7-Day Snow Forecast

Winterhorn Long-Range Snow Forecast Updated today

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Updated 21 September 2026 00:44 PDT

Long-Range Snow Forecast for Winterhorn

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

For Forecast detail, see below.

Winterhorn Snow Forecast Highlights

When will there be fresh snow in Winterhorn?

Winterhorn Snow Forecast Highlights - ECMWF IFS
Snowfall prediction at mid-mountain (6,419ft)
Next Snow?
There is no snow currently in the forecast for Winterhorn.

Long-range Snow Outlook for Winterhorn

Snowfall

Snow Line

Max 68°F
Min 42°F

Snow unlikely

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Winterhorn 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 Winterhorn from OpenMeteo(ECMWF IFS)
	Snow and Weather	Temp Town
Mon 21	Clear spells.	Max 62°F Min 45°F
Tue 22	Clear sky.	Max 60°F Min 41°F
Wed 23	Clear sky.	Max 64°F Min 45°F
Thu 24	Light drizzle.	Max 58°F Min 40°F
Fri 25	Clear sky.	Max 60°F Min 39°F
Sat 26	Clear sky.	Max 69°F Min 46°F
Sun 27	Clear sky.	Max 68°F Min 47°F

No significant snowfall is forecast for this period.

This Snow Forecast for Winterhorn, 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 Winterhorn, 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.

Winterhorn Snow Forecast updated at 00:44 PDT, next update expected 06:00 PDT.

Ensemble forecast for Winterhorn, Switzerland at 4,767ft

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.

Switzerland Accommodation (Apartments, Chalets, Hotels) Map

Snow Reliability

Winterhorn boasts reliable snowfall, with an average snow depth of 150 cm throughout the season. For the latest information on snow conditions and updates, check J2Ski for real-time forecasts.

Off-Piste Safety in Winterhorn

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