September Weather in Plessisville, Canada

Last updated: June 18, 2025

In September, the average temperature in Plessisville, Canada hovers around 15°C (59°F), offering a pleasant atmosphere. However, temperatures can vary dramatically, dipping as low as -2°C (30°F) and soaring to 30°C (86°F). Be prepared for some wet days, as 84 mm (3.3 in) of precipitation is expected over 11 days, contributing to an average humidity level of 81%. A perfect blend of freshness and moisture!

September Temperature in Plessisville

In September in Plessisville, the average temperature is 15°C (59°F). Maximum temperatures can reach 30°C (86°F), while minimums can dip as low as -2°C (30°F). This makes Plessisville a destination with a diverse climate, so be sure to pack layers for your trip!

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

The chart illustrates September temperature patterns in Plessisville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Plessisville, September typically has an average temperature of 15°C (59°F), with highs reaching up to 30°C (86°F) and lows dropping to around -2°C (30°F).

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

September Precipitation in Plessisville

In Plessisville, in September, the precipitation amount is 84 mm (3.3 in) during a period of 11 days.

September Precipitation Trends in Plessisville

The chart displays monthly precipitation patterns in Plessisville, 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 Plessisville, September typically receives around 84 mm (3.3 inches) of precipitation spread over approximately 11 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Plessisville

In Plessisville in September humidity is 81%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket draped over you, making traveling quite uncomfortable as you constantly wipe away beads of sweat and feel the stickiness clinging to your clothes.

September Average Humidity in Plessisville

This chart illustrates the average monthly humidity levels in Plessisville, 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 Plessisville 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 Plessisville

In Plessisville 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 Plessisville.

Maximum UV Index Levels in Plessisville for September

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

Data source: Plessisville 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 Plessisville Compares to Other Months

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

This table compares monthly weather conditions in Plessisville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-9°C (15°F)	90 mm (3.6 inches)	95%	low
February Weather	-8°C (18°F)	89 mm (3.5 inches)	93%	moderate
March Weather	-3°C (26°F)	95 mm (3.7 inches)	90%	moderate
April Weather	4°C (40°F)	123 mm (4.8 inches)	87%	high
May Weather	12°C (54°F)	111 mm (4.4 inches)	79%	very high
June Weather	17°C (63°F)	135 mm (5.3 inches)	73%	very high
July Weather	20°C (68°F)	128 mm (5.0 inches)	81%	very high
August Weather	19°C (67°F)	134 mm (5.3 inches)	81%	very high
September Weather	15°C (59°F)	84 mm (3.3 inches)	81%	high
October Weather	8°C (47°F)	136 mm (5.4 inches)	87%	moderate
November Weather	0°C (32°F)	125 mm (4.9 inches)	89%	moderate
December Weather	-6°C (21°F)	96 mm (3.8 inches)	92%	low