May Weather in Petrolia, Canada

Last updated: June 18, 2025

In May, the average temperature in Petrolia, Canada is a pleasant 14°C (58°F). However, temperatures can vary significantly, with a minimum of -2°C (29°F) and a maximum reaching up to 33°C (91°F). Expect around 103 mm (4.0 in) of precipitation over approximately 14 days, while the average humidity rests at a comfortable 82%.

May Temperature in Petrolia

In May in Petrolia, the average temperature is 14°C (58°F). The maximum can reach 33°C (91°F), and the minimum can be as low as -2°C (29°F). Be prepared for a wide range of temperatures when planning your travel to Petrolia during this time.

May Weather in Petrolia: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Petrolia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Petrolia, May typically has an average temperature of 14°C (58°F), with highs reaching up to 33°C (91°F) and lows dropping to around -2°C (29°F).

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

May Precipitation in Petrolia

In Petrolia in May, the precipitation amount is 103 mm (4.0 in) over a span of 14 days.

May Precipitation Trends in Petrolia

The chart displays monthly precipitation patterns in Petrolia, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Petrolia, May typically receives around 103 mm (4.0 inches) of precipitation spread over approximately 14 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Petrolia

In Petrolia in May, humidity is 82%. With an average temperature of 14°C (58°F), this humidity feels like a heavy blanket wrapping around you, making travel uncomfortable and sticky.

May Average Humidity in Petrolia

This chart illustrates the average monthly humidity levels in Petrolia, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Petrolia is approximately 82%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Petrolia

In Petrolia in May, 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 Petrolia.

Maximum UV Index Levels in Petrolia for May

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

Data source: Petrolia May 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 May Weather in Petrolia Compares to Other Months

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

This table compares monthly weather conditions in Petrolia, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	65 mm (2.6 inches)	90%	low
February Weather	-2°C (28°F)	68 mm (2.7 inches)	90%	moderate
March Weather	2°C (36°F)	68 mm (2.7 inches)	87%	moderate
April Weather	7°C (46°F)	94 mm (3.7 inches)	87%	very high
May Weather	14°C (58°F)	103 mm (4.0 inches)	82%	very high
June Weather	20°C (69°F)	96 mm (3.8 inches)	81%	very high
July Weather	23°C (73°F)	89 mm (3.5 inches)	79%	very high
August Weather	22°C (72°F)	86 mm (3.4 inches)	80%	very high
September Weather	18°C (65°F)	80 mm (3.2 inches)	81%	high
October Weather	12°C (54°F)	108 mm (4.2 inches)	84%	moderate
November Weather	4°C (40°F)	76 mm (3.0 inches)	88%	moderate
December Weather	0°C (33°F)	60 mm (2.4 inches)	87%	low