Saint Gallen (Sankt Gallen)
December
Weather in Saint Gallen for December 2025
Your guide to Saint Gallen weather in December - trends and predictions
Expect heavy snowfall in Saint Gallen during December, with an average of 19 snowy days.
In general, the average temperature in Saint Gallen at the beginning of December is 2.6 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 7.3 °C by the end of December.
Snow Forecast ❄️
Temperatures
6
Dry days
6
Rainy days
19
Snow days
5°/0°
Temperatures
12 km/h
Avg max wind
83 %
Avg humidity
Saint Gallen Weather December
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  4° | 2  4° | 3  0° | 4  1° | 5 2° | 6 4° | 7  3° |
| 8 3° | 9  3° | 10  4° | 11  5° | 12 5° | 13 6° | 14 4° |
| 15  3° | 16  5° | 17 6° | 18 8° | 19  8° | 20  2° | 21 5° |
| 22 7° | 23  5° | 24 6° | 25 8° | 26 7° | 27 6° | 28  7° |
| 29 7° | 30 7° | 31 9° |
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Temperatures trend during December in Saint Gallen
See the weather trend as well as the moving average line
December weather day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Dec. | Heavy snow | 4° /-1° | 16 mm | 9.1 cm | |
| 2 Dec. | Moderate or heavy snow showers | 4° /-4° | 12.1 mm | 9.4 cm | |
| 3 Dec. | Mist | 0° /-7° | 3.3 mm | 0.2 cm | |
| 4 Dec. | Light snow | 1° /-6° | 1.9 mm | 1.4 cm | |
| 5 Dec. | Heavy snow | 2° /-4° | 0.9 mm | 0.5 cm | |
| 6 Dec. | Moderate or heavy snow showers | 4° /1° | 8.1 mm | 1.3 cm | |
| 7 Dec. | Overcast | 3° /-3° | 3.2 mm | 0.3 cm | |
| 8 Dec. | Heavy snow | 3° /-3° | 3.5 mm | 1.6 cm | |
| 9 Dec. | Light drizzle | 3° /1° | 9.5 mm | 1.6 cm | |
| 10 Dec. | Light rain shower | 4° /1° | 6.4 mm | 0.3 cm | |
| 11 Dec. | Moderate or heavy rain with thunder | 5° /1° | 29.7 mm | 0.4 cm | |
| 12 Dec. | Light rain shower | 5° /2° | 10.9 mm | 0 cm | |
| 13 Dec. | Light rain shower | 6° /1° | 9.5 mm | 0 cm | |
| 14 Dec. | Heavy snow | 4° /1° | 7.8 mm | 3.4 cm | |
| 15 Dec. | Light snow showers | 3° /-1° | 1.8 mm | 1.1 cm | |
| 16 Dec. | Sunny | 5° /-2° | 0 mm | 0 cm | |
| 17 Dec. | Sunny | 6° /0° | 0 mm | 0 cm | |
| 18 Dec. | Sunny | 8° /2° | 0 mm | 0 cm | |
| 19 Dec. | Partly cloudy | 8° /1° | 7.1 mm | 2.5 cm | |
| 20 Dec. | Light sleet | 2° /-2° | 8.1 mm | 2.5 cm | |
| 21 Dec. | Light rain | 5° /-2° | 5.4 mm | 0 cm | |
| 22 Dec. | Patchy rain possible | 7° /0° | 19.6 mm | 3.1 cm | |
| 23 Dec. | Moderate or heavy rain shower | 5° /1° | 13 mm | 5 cm | |
| 24 Dec. | Moderate or heavy rain shower | 6° /-1° | 5.5 mm | 0.7 cm | |
| 25 Dec. | Sunny | 8° /0° | 0.1 mm | 0 cm | |
| 26 Dec. | Moderate or heavy rain shower | 7° /0° | 3 mm | 0 cm | |
| 27 Dec. | Patchy rain possible | 6° /0° | 1.2 mm | 0 cm | |
| 28 Dec. | Cloudy | 7° /0° | 0 mm | 0 cm | |
| 29 Dec. | Overcast | 7° /0° | 0.4 mm | 0 cm | |
| 30 Dec. | Patchy rain possible | 7° /0° | 1.8 mm | 0 cm | |
| 31 Dec. | Moderate rain at times | 9° /2° | 1.6 mm | 1 cm | |
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Important Notice
Our weather forecast for Saint Gallen in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Saint Gallen forecast closer to your planned date for the most up-to-date weather information.
Saint Gallen in December - FAQ
What are the expected maximum and minimum temperatures in Saint Gallen during December?
Brace for cold days with temperatures not exceeding 5° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Saint Gallen during December?
Significant rainfall exceeding 191.8 mm is expected in Saint Gallen during December, occurring over more than 6 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Saint Gallen in December 2025?
Saint Gallen experiences an average snowfall of 45.3983 cm during December, occurring over 19 days.
What are the typical wind conditions in Saint Gallen during December?
The average wind speed in Saint Gallen during December is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
Saint Gallen snow forecast December 2025
Track daily snowfall levels and discover Saint Gallen’s snowy potential this December ❄️
December rainfall patterns in Saint Gallen
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