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Alt St. Johann Weather Forecast - 7 to 16 days - 21st September 2026

Alt St. Johann Weather

ECMWF IFS
GFS

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Weather Forecast for Alt St. Johann (2,953ft to 7,421ft)

Weather Outlook from 21 September.

Alt St. Johann Forecast

See below for the detailed long-range forecast, including lowest and highest temperatures, sunshine, cloud cover, wind and rain projections.

Alt St. Johann Weather Forecast updated at 00:47 PDT, next update expected 06:00 PDT.

Long-range Snow Outlook for Alt St. Johann

 
Snowfall

 
Snow Line

Max 77°F
Min 45°F

Snow unlikely

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Alt St. Johann Daily Weather Forecast Detail

16 Day Weather and Snow Forecast for Alt St. Johann from OpenMeteo(ECMWF IFS)
BaseSnow and WeatherTemp
Town
Mon
21
Cloud

Cloudy.

Max 65°F
Min 50°F
Tue
22
Clear

Clear sky.

Max 62°F
Min 46°F
Wed
23
Clear

Clear sky.

Max 66°F
Min 45°F
Thu
24
Mixed

Clear spells.

Max 65°F
Min 49°F
Fri
25
Clear

Clear sky.

Max 66°F
Min 45°F
Sat
26
Clear

Clear sky.

Max 74°F
Min 50°F
Sun
27
Clear

Clear sky.

Max 77°F
Min 56°F

No significant snowfall is forecast for this period.

This Snow Forecast for Alt St. Johann, 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 Alt St. Johann, 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.

Alt St. Johann Weather Forecast updated at 00:47 PDT, next update expected 06:00 PDT.

Current Snow

For current snow depths and skiing conditions, see our Current Snow Report for Alt St. Johann.

For more information about this Swiss Ski Resort, See Also Skiing and Snowboarding in Alt St. Johann .

Off-Piste Safety in Alt St. Johann

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