October Weather in Sion, Canada

Last updated: June 18, 2025

In October, the average temperature in Sion, Canada hovers around 5°C (42°F). Expect a wide range in temperatures, with a minimum of -10°C (15°F) and a maximum of 24°C (75°F). This month also brings 59 mm (2.3 in) of precipitation over approximately 11 days, combined with an average humidity of 85%. Prepare accordingly for a mix of chilly and mild weather!

October Temperature in Sion

In October in Sion, the average temperature is 5°C (42°F). The maximum can reach 24°C (75°F) and the minimum can be as low as -10°C (15°F). Be sure to pack layers and prepare for a wide range of temperatures while exploring this destination!

October Weather in Sion: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Sion, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sion, October typically has an average temperature of 5°C (42°F), with highs reaching up to 24°C (75°F) and lows dropping to around -10°C (15°F).

Data source: Temperature data for Sion generated using information from the Copernicus Climate Change Service.

October Precipitation in Sion

In Sion in October, the precipitation amount is 59 mm (2.3 in) over the course of 11 days.

October Precipitation Trends in Sion

The chart displays monthly precipitation patterns in Sion, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Sion, October typically receives around 59 mm (2.3 inches) of precipitation spread over approximately 11 days.

Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

October Humidity in Sion

In Sion in October, humidity is 85%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities uncomfortable and requiring extra layers to stay warm while exploring.

October Average Humidity in Sion

This chart illustrates the average monthly humidity levels in Sion, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Sion is approximately 85%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Sion

In Sion in October, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Sion for better planning.

Maximum UV Index Levels in Sion for October

The chart shows the monthly maximum UV Index (UVI) for Sion in October, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In October, the maximum UV index in Sion typically reaches 4, which falls under the moderate exposure category.

Data source: Sion October UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How October Weather in Sion Compares to Other Months

Weather in Sion varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Sion, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Sion, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (24°F)	74 mm (2.9 inches)	90%	low
February Weather	-5°C (24°F)	59 mm (2.3 inches)	91%	moderate
March Weather	1°C (34°F)	68 mm (2.7 inches)	89%	moderate
April Weather	5°C (42°F)	69 mm (2.7 inches)	85%	high
May Weather	12°C (53°F)	66 mm (2.6 inches)	82%	very high
June Weather	16°C (61°F)	45 mm (1.8 inches)	81%	very high
July Weather	20°C (69°F)	13 mm (0.5 inches)	84%	very high
August Weather	20°C (68°F)	18 mm (0.7 inches)	75%	very high
September Weather	13°C (57°F)	45 mm (1.8 inches)	74%	high
October Weather	5°C (42°F)	59 mm (2.3 inches)	85%	moderate
November Weather	0°C (33°F)	71 mm (2.8 inches)	88%	low
December Weather	-4°C (26°F)	72 mm (2.8 inches)	93%	low