September Weather in Petrolia, Canada

Last updated: June 18, 2025

In September, the average temperature in Petrolia, Canada hovers around 18°C (65°F), with temperatures ranging from a chilly 2°C (35°F) to a warm 33°C (91°F). Expect around 80 mm (3.2 in) of precipitation spread across 11 days, contributing to an average humidity level of 81%. Prepare for a variable climate that blends cool breezes with occasional warmth!

September Temperature in Petrolia

In September in Petrolia, the average temperature is 18°C (65°F). The maximum can reach 33°C (91°F), while the minimum can be as low as 2°C (35°F). Pack accordingly for a varied climate to fully enjoy your trip to Petrolia.

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

The chart illustrates September 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, September typically has an average temperature of 18°C (65°F), with highs reaching up to 33°C (91°F) and lows dropping to around 2°C (35°F).

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

September Precipitation in Petrolia

In Petrolia in September, the precipitation amount is 80 mm (3.2 in) spread over 11 days.

September Precipitation Trends in Petrolia

The chart displays monthly precipitation patterns in Petrolia, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Petrolia, September typically receives around 80 mm (3.2 inches) of precipitation spread over approximately 11 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Petrolia

In Petrolia in September, humidity is 81%. With an average temperature of 18°C (65°F), this humidity feels like a thick blanket wrapping around you, making every step feel heavier and the air thick and sultry—a challenging environment for traveling.

September Average Humidity in Petrolia

This chart illustrates the average monthly humidity levels in Petrolia, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Petrolia is approximately 81%, offering insight into how humid the weather typically is during this month.

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

September UV Index in Petrolia

In Petrolia in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Petrolia.

Maximum UV Index Levels in Petrolia for September

The chart shows the monthly maximum UV Index (UVI) for Petrolia in September, 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 September, the maximum UV index in Petrolia typically reaches 7, which falls under the high exposure category.

Data source: Petrolia September 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 September 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 September’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 September’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