September Weather in Montmagny, Canada

Last updated: June 18, 2025

In September, the average temperature in Montmagny, Canada hovers around 14°C (57°F), with a range that can dip to a brisk 0°C (33°F) and soar up to a warm 28°C (82°F). Expect about 67 mm (2.6 in) of precipitation spread over 10 days, and feel the atmosphere with an average humidity of 81%.

September Temperature in Montmagny

In September in Montmagny, the average temperature is 14°C (57°F). Maximums can reach 28°C (82°F), while minimums can dip as low as 0°C (33°F). Pack layers to enjoy the diverse weather during your travels!

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

The chart illustrates September temperature patterns in Montmagny, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Montmagny, September typically has an average temperature of 14°C (57°F), with highs reaching up to 28°C (82°F) and lows dropping to around 0°C (33°F).

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

September Precipitation in Montmagny

In Montmagny in September, the total precipitation amount is 67 mm (2.6 in) over a period of 10 days.

September Precipitation Trends in Montmagny

The chart displays monthly precipitation patterns in Montmagny, 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 Montmagny, September typically receives around 67 mm (2.6 inches) of precipitation spread over approximately 10 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 Montmagny

In Montmagny in September, humidity is 81%. With an average temperature of 14°C (57°F), this humidity feels like a warm, dense blanket that clings to your skin, making outdoor exploration a bit heavier and more tiring.

September Average Humidity in Montmagny

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

In Montmagny in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Montmagny, you can refer to this Hourly UV Index in Montmagny.

Maximum UV Index Levels in Montmagny for September

The chart shows the monthly maximum UV Index (UVI) for Montmagny 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 Montmagny typically reaches 6, which falls under the high exposure category.

Data source: Montmagny 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 Montmagny Compares to Other Months

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

This table compares monthly weather conditions in Montmagny, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-10°C (14°F)	92 mm (3.6 inches)	95%	low
February Weather	-9°C (16°F)	84 mm (3.3 inches)	93%	moderate
March Weather	-4°C (24°F)	97 mm (3.8 inches)	90%	moderate
April Weather	2°C (36°F)	118 mm (4.6 inches)	87%	high
May Weather	11°C (52°F)	95 mm (3.8 inches)	79%	very high
June Weather	16°C (62°F)	102 mm (4.0 inches)	73%	very high
July Weather	20°C (68°F)	79 mm (3.1 inches)	81%	very high
August Weather	19°C (66°F)	87 mm (3.4 inches)	81%	very high
September Weather	14°C (57°F)	67 mm (2.6 inches)	81%	high
October Weather	8°C (46°F)	124 mm (4.9 inches)	87%	moderate
November Weather	-1°C (31°F)	121 mm (4.8 inches)	89%	moderate
December Weather	-7°C (20°F)	96 mm (3.8 inches)	92%	low