July Weather in Sion, Canada

Last updated: June 18, 2025

In July, the average temperature in Sion, Canada is a pleasant 20°C (69°F). However, you might experience a range of temperatures, with minimums dipping to 6°C (43°F) and maximums soaring up to 40°C (105°F). Expect light precipitation, averaging 13 mm (0.5 in) spread across 4 days, and be prepared for a high average humidity of 84%, which adds a touch of tropical warmth to the atmosphere.

July Temperature in Sion

In July in Sion, the average temperature is 20°C (69°F), with maximums reaching up to 40°C (105°F) and minimums dropping as low as 6°C (43°F). This wide temperature range makes it essential to pack accordingly for your travels to Sion.

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

The chart illustrates July 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, July typically has an average temperature of 20°C (69°F), with highs reaching up to 40°C (105°F) and lows dropping to around 6°C (43°F).

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

July Precipitation in Sion

In Sion in July, the precipitation amount is 13 mm (0.5 in) over a span of 4 days.

July Precipitation Trends in Sion

The chart displays monthly precipitation patterns in Sion, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Sion, July typically receives around 13 mm (0.5 inches) of precipitation spread over approximately 4 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

July Humidity in Sion

In Sion in July humidity is 84%. With an average temperature of 20°C (69°F), this humidity feels like walking through a warm, moist blanket, making travel feel heavy and slightly fatigued as the heat clings to your skin and leaves you yearning for a refreshing breeze.

July Average Humidity in Sion

This chart illustrates the average monthly humidity levels in Sion, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Sion is approximately 84%, offering insight into how humid the weather typically is during this month.

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

July UV Index in Sion

In Sion in July, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Sion.

Maximum UV Index Levels in Sion for July

The chart shows the monthly maximum UV Index (UVI) for Sion in July, 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 July, the maximum UV index in Sion typically reaches 9, which falls under the very high exposure category.

Data source: Sion July 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 July 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 July’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 July’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