March Weather in Sion, Canada

Last updated: June 18, 2025

In Sion, Canada, the average temperature in March hovers around 1°C (34°F). Expect a chilly environment, with minimums plummeting to -23°C (-9°F) and a maximum warmth of 17°C (63°F). On top of that, prepare for 68 mm (2.7 in) of precipitation spread over approximately 13 days. The air will feel quite damp, with an average humidity level of 89%.

March Temperature in Sion

In March in Sion, the average temperature is 1°C (34°F), with a maximum reaching 17°C (63°F) and a minimum dropping as low as -23°C (-9°F). Be sure to pack warm layers and be prepared for temperature fluctuations if you plan to travel during this time.

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

The chart illustrates March 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, March typically has an average temperature of 1°C (34°F), with highs reaching up to 17°C (63°F) and lows dropping to around -23°C (-9°F).

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

March Precipitation in Sion

In Sion in March, the precipitation amount is 68 mm (2.7 in) spread over 13 days.

March Precipitation Trends in Sion

The chart displays monthly precipitation patterns in Sion, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Sion, March typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 13 days.

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

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Millimeters (mm) Inches (in)

March Humidity in Sion

In Sion in March humidity is 89%. With an average temperature of 1°C (34°F), this humidity feels like a chilling dampness that seeps into your bones, making travel uncomfortable and requiring extra layers to combat the cold and moisture.

March Average Humidity in Sion

This chart illustrates the average monthly humidity levels in Sion, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Sion is approximately 89%, offering insight into how humid the weather typically is during this month.

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

March UV Index in Sion

In Sion in March, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Sion.

Maximum UV Index Levels in Sion for March

The chart shows the monthly maximum UV Index (UVI) for Sion in March, 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 March, the maximum UV index in Sion typically reaches 5, which falls under the moderate exposure category.

Data source: Sion March 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 March 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 March’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 March’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