September Weather in Grande Cache, Canada

Last updated: June 18, 2025

In September, the average temperature in Grande Cache, Canada hovers around 6°C (43°F). Be prepared for a range of weather, as temperatures can plummet to a minimum of -14°C (7°F) or soar to a maximum of 27°C (81°F). With an average humidity of 83%, it's essential to stay hydrated. Expect about 93 mm (3.7 in) of precipitation spread over 15 days, making for a refreshing, albeit slightly damp, month!

September Temperature in Grande Cache

In September in Grande Cache, the average temperature is 6°C (43°F). The maximum can reach 27°C (81°F), while the minimum can drop as low as -14°C (7°F). This wide range of temperatures suggests that travelers should be prepared for both mild and chilly weather when visiting.

September Weather in Grande Cache: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Grande Cache, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grande Cache, September typically has an average temperature of 6°C (43°F), with highs reaching up to 27°C (81°F) and lows dropping to around -14°C (7°F).

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

September Precipitation in Grande Cache

In Grande Cache in September, the precipitation amount is 93 mm (3.7 in) over the course of 15 days.

September Precipitation Trends in Grande Cache

The chart displays monthly precipitation patterns in Grande Cache, 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 Grande Cache, September typically receives around 93 mm (3.7 inches) of precipitation spread over approximately 15 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 Grande Cache

In Grande Cache in September, humidity is 83%. With an average temperature of 6°C (43°F), this humidity feels like a brisk chill that can make you feel colder than the actual temperature, often leading to a damp and uncomfortable experience for traveling.

September Average Humidity in Grande Cache

This chart illustrates the average monthly humidity levels in Grande Cache, 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 Grande Cache is approximately 83%, 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 Grande Cache

In Grande Cache 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 Grande Cache, you can refer to this Hourly UV Index in Grande Cache.

Maximum UV Index Levels in Grande Cache for September

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

Data source: Grande Cache 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 Grande Cache Compares to Other Months

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

This table compares monthly weather conditions in Grande Cache, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-11°C (12°F)	36 mm (1.4 inches)	95%	low
February Weather	-13°C (8°F)	51 mm (2.0 inches)	95%	moderate
March Weather	-6°C (21°F)	54 mm (2.1 inches)	91%	moderate
April Weather	-2°C (29°F)	52 mm (2.0 inches)	89%	high
May Weather	5°C (42°F)	68 mm (2.7 inches)	87%	very high
June Weather	10°C (50°F)	109 mm (4.3 inches)	84%	very high
July Weather	12°C (54°F)	126 mm (5.0 inches)	87%	very high
August Weather	11°C (52°F)	82 mm (3.2 inches)	84%	very high
September Weather	6°C (43°F)	93 mm (3.7 inches)	83%	high
October Weather	-1°C (30°F)	74 mm (2.9 inches)	92%	moderate
November Weather	-7°C (20°F)	82 mm (3.2 inches)	98%	low
December Weather	-11°C (12°F)	43 mm (1.7 inches)	98%	low