March Weather in Guelph, Canada

Last updated: June 18, 2025

In Guelph, Canada, the average temperature in March hovers around 0°C (32°F), with an intriguing range that can plummet to a chilly -21°C (-6°F) or rise to a mild 20°C (68°F). Expect 65 mm (2.5 in) of precipitation spread over 9 days, enveloped in a notably high average humidity of 87%.

March Temperature in Guelph

In March in Guelph, the average temperature is 0°C (32°F). Maximums can reach 20°C (68°F), while minimums can drop to as low as -21°C (-6°F). Be prepared for a wide range of temperatures when traveling to Guelph during this time.

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

The chart illustrates March temperature patterns in Guelph, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Guelph, March typically has an average temperature of 0°C (32°F), with highs reaching up to 20°C (68°F) and lows dropping to around -21°C (-6°F).

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

March Precipitation in Guelph

In Guelph in March, the precipitation amount is 65 mm (2.5 in) over the course of 9 days.

March Precipitation Trends in Guelph

The chart displays monthly precipitation patterns in Guelph, 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 Guelph, March typically receives around 65 mm (2.5 inches) of precipitation spread over approximately 9 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

March Humidity in Guelph

In Guelph in March, humidity is 87%. With an average temperature of 0°C (32°F), this humidity feels like a damp chill that clings to your skin, making travel uncomfortable and cold, as each breath brings a heavy moisture that seeps into your clothes.

March Average Humidity in Guelph

This chart illustrates the average monthly humidity levels in Guelph, 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 Guelph is approximately 87%, 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 Guelph

In Guelph 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 Guelph.

Maximum UV Index Levels in Guelph for March

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

Data source: Guelph 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 Guelph Compares to Other Months

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

This table compares monthly weather conditions in Guelph, 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 (23°F)	70 mm (2.8 inches)	90%	low
February Weather	-5°C (24°F)	75 mm (2.9 inches)	90%	moderate
March Weather	0°C (32°F)	65 mm (2.5 inches)	87%	moderate
April Weather	6°C (42°F)	103 mm (4.1 inches)	87%	very high
May Weather	13°C (56°F)	97 mm (3.8 inches)	82%	very high
June Weather	19°C (66°F)	105 mm (4.1 inches)	81%	very high
July Weather	22°C (71°F)	77 mm (3.0 inches)	79%	very high
August Weather	20°C (69°F)	95 mm (3.7 inches)	80%	very high
September Weather	17°C (62°F)	71 mm (2.8 inches)	81%	high
October Weather	10°C (50°F)	101 mm (4.0 inches)	84%	moderate
November Weather	2°C (36°F)	78 mm (3.1 inches)	88%	moderate
December Weather	-2°C (29°F)	72 mm (2.8 inches)	87%	low