Zweisimmen 7-Day Snow Forecast

Zweisimmen Long-Range Snow Forecast Updated today

ECMWF IFS

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Updated 31 August 2026 17:45 PDT

Long-Range Snow Forecast for Zweisimmen

Long-range (14 to 45 days) from 1 September.

For Forecast detail, see below.

Zweisimmen Snow Forecast Highlights

When will there be fresh snow in Zweisimmen?

Zweisimmen Snow Forecast Highlights - ECMWF IFS
Snowfall prediction at mid-mountain (4,839ft)
Next Snow?
There is no snow currently in the forecast for Zweisimmen.
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Long-range Snow Outlook for Zweisimmen

Snowfall

Snow Line

Max 88°F
Min 45°F

Snow unlikely

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Zweisimmen 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 Zweisimmen from OpenMeteo(ECMWF IFS)
	Snow and Weather	Temp Town
Tue 01	Clear sky.	Max 72°F Min 45°F
Wed 02	Cloudy.	Max 74°F Min 45°F
Thu 03	Clear sky.	Max 75°F Min 49°F
Fri 04	Clear sky.	Max 86°F Min 54°F
Sat 05	Clear spells.	Max 83°F Min 60°F
Sun 06	Clear sky.	Max 88°F Min 59°F
Mon 07	Light drizzle.	Max 78°F Min 64°F

This Snow Forecast for Zweisimmen, 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 Zweisimmen, 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.

Zweisimmen Snow Forecast updated at 17:45 PDT, next update expected imminently.

Ensemble forecast for Zweisimmen, Switzerland at 3,117ft

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

Zweisimmen enjoys reliable snow conditions, with an average snow depth of around 100 cm in winter. Snowfalls are frequent, but for the latest updates on snow conditions, be sure to check J2Ski.

Off-Piste Safety in Zweisimmen

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