September Weather in Alma, Canada

Last updated: June 18, 2025

In September, the average temperature in Alma, Canada hovers around 14°C (57°F), with a minimum drop to 1°C (34°F) and a pleasant maximum of 28°C (83°F). Expect about 136 mm (5.4 in) of precipitation spread over 15 days, contributing to an average humidity of 85%. It's a month full of atmospheric richness—perfect for layering up and enjoying the beauty of seasonal transitions!

September Temperature in Alma

In September in Alma, the average temperature is 14°C (57°F). Maximums can reach 28°C (83°F), and minimums can be as low as 1°C (34°F). This diverse temperature range makes Alma a great destination for travelers seeking both warm days and cooler nights.

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

The chart illustrates September temperature patterns in Alma, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alma, September typically has an average temperature of 14°C (57°F), with highs reaching up to 28°C (83°F) and lows dropping to around 1°C (34°F).

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

September Precipitation in Alma

In Alma in September, the precipitation amount is 136 mm (5.4 in) over a period of 15 days.

September Precipitation Trends in Alma

The chart displays monthly precipitation patterns in Alma, 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 Alma, September typically receives around 136 mm (5.4 inches) of precipitation spread over approximately 15 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 Alma

In Alma in September, humidity is 85%. With an average temperature of 14°C (57°F), this humidity feels like a thick blanket enveloping you, making travel feel heavy and sluggish.

September Average Humidity in Alma

This chart illustrates the average monthly humidity levels in Alma, 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 Alma is approximately 85%, 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 Alma

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

Maximum UV Index Levels in Alma for September

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

Data source: Alma 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 Alma Compares to Other Months

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

This table compares monthly weather conditions in Alma, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-13°C (9°F)	65 mm (2.6 inches)	96%	low
February Weather	-12°C (11°F)	60 mm (2.4 inches)	94%	moderate
March Weather	-6°C (22°F)	81 mm (3.2 inches)	91%	moderate
April Weather	2°C (35°F)	93 mm (3.7 inches)	90%	high
May Weather	9°C (48°F)	102 mm (4.0 inches)	80%	very high
June Weather	16°C (61°F)	83 mm (3.3 inches)	73%	very high
July Weather	20°C (68°F)	121 mm (4.8 inches)	81%	very high
August Weather	19°C (66°F)	120 mm (4.7 inches)	84%	very high
September Weather	14°C (57°F)	136 mm (5.4 inches)	85%	high
October Weather	7°C (46°F)	133 mm (5.3 inches)	89%	moderate
November Weather	-1°C (31°F)	103 mm (4.1 inches)	91%	low
December Weather	-9°C (16°F)	81 mm (3.2 inches)	97%	low