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Afbeelding - Alt. St. Johann
© Toggenburg Tourismus

What is the weather like in Alt St. Johann in Switzerland, and what is the forecast for the next few days? Check the current weather forecast for Alt St. Johann on this page. Here, you will find the weather forecast for the next 48 hours as well as the next 14 days, so you’ll know exactly what to expect and what the weather will be like in Alt St. Johann during your winter holiday.

The weather in Alt St. Johann

On this page, you will find the current weather forecast for Alt St. Johann, located in the ski resort of Toggenburg in Switzerland. Check the forecast and temperature for both the valley and the mountain. This will help you see what conditions will be like on the slopes and whether you need to add an extra layer for the day’s skiing. Will snow be in the forecast, or will the sun be shining? And what about the wind? How high is the frost line (0-degree limit), and what is the current snow depth in Alt St. Johann? Read on for all this information!

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48-hour weather forecast for Alt St. Johann

20 December 2025

Night

Expectation 0 mm

0-degree limit 2603 metres

Clouds and clearings

4°C

O 2
Morning

Expectation 0 mm

0-degree limit 2663 metres

Regular sunshine with some clouds

4°C

Zo 1
Midday

Expectation 0 mm

0-degree limit 2584 metres

Regular sunshine with some clouds

8°C

Nw 1
Evening

Expectation 0 mm

0-degree limit 2493 metres

Overcast

5°C

Zo 2

21 December 2025

Night

Expectation 0 mm

0-degree limit 2579 metres

Overcast

4°C

Zo 2
Morning

Expectation 0 mm

0-degree limit 2700 metres

Regular sunshine with some clouds

5°C

Ozo 2
Midday

Expectation 0 mm

0-degree limit 2711 metres

Regular sunshine with some clouds

10°C

Zo 3
Evening

Expectation 0 mm

0-degree limit 2989 metres

Overcast

6°C

Zzo 4

20 December 2025

Night

Expectation 0 mm

0-degree limit 2561 metres

Clouds and clearings

-1°C

Zzo 6
Morning

Expectation 0 mm

0-degree limit 2651 metres

Regular sunshine with some clouds

-1°C

Z 5
Midday

Expectation 0 mm

0-degree limit 2577 metres

Regular sunshine with some clouds

1°C

Zzw 5
Evening

Expectation 0 mm

0-degree limit 2486 metres

Overcast

0°C

Z 6

21 December 2025

Night

Expectation 0 mm

0-degree limit 2498 metres

Overcast

0°C

Z 7
Morning

Expectation 0 mm

0-degree limit 2627 metres

Regular sunshine with some clouds

0°C

Z 8
Midday

Expectation 0 mm

0-degree limit 2636 metres

Regular sunshine with some clouds

0°C

Z 8
Evening

Expectation 0 mm

0-degree limit 2815 metres

Overcast

-1°C

Z 7

14-day weather forecast for Alt St. Johann

Date

Weather and snow

Expectation

Wind

Frost line

Date

Weather and snow

Expectation

Wind

Frost line

20 December 2025
Regular sunshine with some clouds
3°C / 8°C
0 mm
Zo 2

2511 metres

Date

Weather and snow

Expectation

Wind

Frost line

21 December 2025
Regular sunshine with some clouds
4°C / 10°C
0 mm
Zzo 4

2518 metres

Date

Weather and snow

Expectation

Wind

Frost line

22 December 2025
Regular sunshine with some clouds
4°C / 9°C
0 mm
Zzo 3

2702 metres

Date

Weather and snow

Expectation

Wind

Frost line

23 December 2025
Regular sunshine with some clouds
0°C / 6°C
0 mm
Zzo 2

2006 metres

Date

Weather and snow

Expectation

Wind

Frost line

24 December 2025
Mix of rain, sleet and snow
0°C / 2°C
1 mm
Nno 2

1070 metres

Date

Weather and snow

Expectation

Wind

Frost line

25 December 2025
Wet snow with some sunshine
-1°C / 1°C
1 mm
Nno 2

689 metres

Date

Weather and snow

Expectation

Wind

Frost line

26 December 2025
Regular sunshine with some clouds
-3°C / -1°C
1 mm
Nno 2

516 metres

Date

Weather and snow

Expectation

Wind

Frost line

27 December 2025
Regular sunshine with some clouds
-4°C / 0°C
1 mm
Nno 2

436 metres

Date

Weather and snow

Expectation

Wind

Frost line

28 December 2025
Regular sunshine with some clouds
-3°C / 1°C
1 mm
Zo 2

406 metres

Date

Weather and snow

Expectation

Wind

Frost line

29 December 2025
Bright sunny weather
-3°C / 1°C
1 mm
Zo 2

420 metres

Date

Weather and snow

Expectation

Wind

Frost line

30 December 2025
Regular sunshine with some clouds
-3°C / 2°C
1 mm
Zzo 2

460 metres

Date

Weather and snow

Expectation

Wind

Frost line

31 December 2025
Snow showers with some sunshine
-3°C / 2°C
1 cm
Zo 2

452 metres

Date

Weather and snow

Expectation

Wind

Frost line

01 January 2026
Snow showers with some sunshine
-3°C / 2°C
1 cm
Z 2

445 metres

Date

Weather and snow

Expectation

Wind

Frost line

02 January 2026
Regular sunshine with some clouds
-3°C / 2°C
1 mm
Nw 2

452 metres

Date

Weather and snow

Expectation

Wind

Frost line

20 December 2025
Regular sunshine with some clouds
-1°C /1°C
0 mm
Z 6

2508 metres

Date

Weather and snow

Expectation

Wind

Frost line

21 December 2025
Regular sunshine with some clouds
-1°C /0°C
0 mm
Z 8

2476 metres

Date

Weather and snow

Expectation

Wind

Frost line

22 December 2025
Regular sunshine with some clouds
-2°C /-1°C
0 mm
Zzo 7

2593 metres

Date

Weather and snow

Expectation

Wind

Frost line

23 December 2025
Regular sunshine with some clouds
-3°C /-1°C
0 mm
Zzo 6

2006 metres

Date

Weather and snow

Expectation

Wind

Frost line

24 December 2025
Overcast with some snowfall
-5°C /-4°C
1 cm
O 5

1070 metres

Date

Weather and snow

Expectation

Wind

Frost line

25 December 2025
Snow showers with some sunshine
-7°C /-4°C
1 cm
Ozo 5

689 metres

Date

Weather and snow

Expectation

Wind

Frost line

26 December 2025
Regular sunshine with some clouds
-8°C /-5°C
1 mm
Zo 5

516 metres

Date

Weather and snow

Expectation

Wind

Frost line

27 December 2025
Regular sunshine with some clouds
-7°C /-5°C
1 mm
Zo 5

436 metres

Date

Weather and snow

Expectation

Wind

Frost line

28 December 2025
Regular sunshine with some clouds
-8°C /-5°C
1 mm
Zzo 5

406 metres

Date

Weather and snow

Expectation

Wind

Frost line

29 December 2025
Bright sunny weather
-8°C /-4°C
1 mm
Zo 5

420 metres

Date

Weather and snow

Expectation

Wind

Frost line

30 December 2025
Regular sunshine with some clouds
-8°C /-4°C
1 mm
Ozo 5

460 metres

Date

Weather and snow

Expectation

Wind

Frost line

31 December 2025
Snow showers with some sunshine
-8°C /-5°C
1 cm
Zo 5

452 metres

Date

Weather and snow

Expectation

Wind

Frost line

01 January 2026
Snow showers with some sunshine
-8°C /-5°C
1 cm
O 5

445 metres

Date

Weather and snow

Expectation

Wind

Frost line

02 January 2026
Regular sunshine with some clouds
-11°C /-5°C
1 mm
Ono 5

452 metres

Snow depth in Alt St. Johann

Snow is what makes a ski holiday special. Ideally, we wake up every day to Kaiser weather: a layer of fresh snow, bright sunshine, and a clear blue sky. However, icy temperatures and heavy snowfalls are also part of the experience. Or those foggy days when you ski from hut to hut, warming up with a cup of coffee, tea, or hot chocolate. When it comes to winter sports, the weather can be unpredictable, and nothing changes more rapidly than mountain weather. In addition to the forecast for the coming days, the current snow depth is a key part of the weather report in Alt St. Johann. How much snow is there on the mountain and in the valley of the Toggenburg ski area? Check the table below to see the current snow depth in Alt St. Johann.

Snow depth on the mountain and in the valley

Mountain: 70 cm

Valley: 10 cm

  • Snow depth valley 10
  • Cross-country ski trails open (km) 0
  • Valley descent open Closed
  • Hiking trails open (km) 0

Pistes Chäserrugg – Unterwasser/​Alt St. Johann

Snow depth valley 10
Number of km 12
Snow depth mountain 70
Number of lifts open 8
Type of snow Kunstschnee
Funpark Closed
Latest snowfall 27 November 2025
Toboggan run Closed
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Explanation of the weather forecast in Alt St. Johann

The weather report for Alt St. Johann is updated daily and is carefully compiled by meteorologists working with Snowplaza. Curious about the forecast for the next two days? Check out the 48-hour weather forecast, which provides information for the morning, afternoon, evening, and night. The symbols indicate whether snow or rain is expected, whether it will be cloudy, or if the sun will be shining. Click on "village" to see the weather conditions in the valley, and on "mountain" for forecasts at higher altitudes. The zero-degree line indicates the frost line, which changes depending on the temperature. Don't confuse it with the snowline—snow can still fall several hundred meters below the zero-degree line. For a longer-term outlook, check the 14-day weather forecast for Alt St. Johann. Keep in mind that weather conditions can change dramatically over two weeks, so be sure to check back daily if you're planning a winter sports trip soon.