Monthly weather forecast and climate
Sion, Switzerland

What is the coldest month in Sion?

The coldest month is January, with an average high-temperature of 4.4°C (39.9°F) and an average low-temperature of -3.8°C (25.2°F).

How many days does it rain in Sion?

Throughout the year, in Sion, there are 82.1 rainfall days, and 605mm (23.8") of precipitation is accumulated.

When does it snow in Sion?

January through April, October through December are months with snowfall.

How many days does it snow in Sion?

In Sion, Switzerland, during the entire year, snow falls for 8.3 days, and aggregates up to 445mm (17.5") of snow.

What is the snowiest month in Sion?

January is the month with the most snowfall. Snow falls for 3 days and accumulates 141mm (5.6") of snow.

What is the driest month in Sion?

April is the month with the least rainfall in Sion. Rain falls for 5.2 days and accumulates 35mm (1.4") of precipitation.

What is the warmest month in Sion?

The warmest month in Sion is July, with an average high-temperature of 27°C (80.6°F) and an average low-temperature of 13.8°C (56.8°F).

What is the wettest month in Sion?

The month with the most rainfall in Sion, Switzerland, is December when the rain falls for 7.4 days and typically aggregates up to 64mm (2.5") of precipitation.
Average humidity - Sion, Switzerland
Average rainfall - Sion, Switzerland
Average rainfall days - Sion, Switzerland

The month with the highest number of rainy days is August (7.9 days).
The month with the lowest number of rainy days is April (5.2 days).

Average snowfall - Sion, Switzerland
Average snowfall days - Sion, Switzerland

The month with the highest number of snowfall days is January (3 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

Average daylight / Average sunshine - Sion, Switzerland
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