September Weather in Stirling, Canada

Last updated: June 18, 2025

In September, the average temperature in Stirling, Canada hovers around 17°C (63°F). Expect a minimum dip to 1°C (34°F) and a maximum rise to 33°C (91°F). With an average precipitation of 79 mm (3.1 in) spread over 9 days, you might want to pack an umbrella. Additionally, humidity levels are typically around 74%, so be prepared for a muggy experience!

September Temperature in Stirling

In September in Stirling, the average temperature is 17°C (63°F). Maximums can reach 33°C (91°F) and minimums can be as low as 1°C (34°F). Be sure to pack layers to accommodate the wide temperature range while exploring.

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

The chart illustrates September temperature patterns in Stirling, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stirling, September typically has an average temperature of 17°C (63°F), with highs reaching up to 33°C (91°F) and lows dropping to around 1°C (34°F).

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

September Precipitation in Stirling

In Stirling in September, the precipitation amount is 79 mm (3.1 in) spread over 9 days.

September Precipitation Trends in Stirling

The chart displays monthly precipitation patterns in Stirling, 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 Stirling, September typically receives around 79 mm (3.1 inches) of precipitation spread over approximately 9 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 Stirling

In Stirling in September, humidity is 74%. With an average temperature of 17°C (63°F), this humidity feels like a gentle embrace, making outdoor exploration comfortable yet slightly enveloped in warmth, perfect for leisurely strolls but requiring ample hydration for prolonged activities.

September Average Humidity in Stirling

This chart illustrates the average monthly humidity levels in Stirling, 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 Stirling is approximately 74%, 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 Stirling

In Stirling 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 Stirling.

Maximum UV Index Levels in Stirling for September

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

Data source: Stirling 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 Stirling Compares to Other Months

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

This table compares monthly weather conditions in Stirling, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (22°F)	69 mm (2.7 inches)	93%	low
February Weather	-5°C (24°F)	72 mm (2.8 inches)	94%	moderate
March Weather	0°C (32°F)	65 mm (2.6 inches)	87%	moderate
April Weather	6°C (43°F)	114 mm (4.5 inches)	82%	very high
May Weather	13°C (56°F)	95 mm (3.7 inches)	74%	very high
June Weather	19°C (66°F)	92 mm (3.6 inches)	68%	very high
July Weather	22°C (72°F)	89 mm (3.5 inches)	67%	very high
August Weather	21°C (70°F)	102 mm (4.0 inches)	67%	very high
September Weather	17°C (63°F)	79 mm (3.1 inches)	74%	high
October Weather	10°C (51°F)	126 mm (5.0 inches)	83%	moderate
November Weather	3°C (37°F)	90 mm (3.5 inches)	89%	moderate
December Weather	-2°C (28°F)	79 mm (3.1 inches)	91%	low