Last updated: June 18, 2025
In September, the average temperature in Bonnyville, Canada hovers around 10°C (50°F). Expect a range where the minimum can dip to -4°C (24°F) while the maximum might soar to 28°C (82°F). With an average humidity of 76%, it can feel quite muggy at times. Prepare for some moisture, as you might encounter about 40 mm (1.6 in) of precipitation over 7 days.
In September in Bonnyville, the average temperature is 10°C (50°F), with maximums reaching up to 28°C (82°F) and minimums dropping to as low as -4°C (24°F). This makes it essential for travelers to pack layers to prepare for both warm days and chilly nights.
In Bonnyville in September, the precipitation amount is 40 mm (1.6 in) over a span of 7 days.
In Bonnyville in September, humidity is 76%. With an average temperature of 10°C (50°F), this humidity feels like a damp chill that seeps through your clothes, making outdoor activities quite uncomfortable and necessitating a layer of warmth for traveling.
In Bonnyville 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 Bonnyville, you can refer to this Hourly UV Index in Bonnyville.
UV Risk Categories
Weather in Bonnyville varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Bonnyville, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -13°C (9°F) | 19 mm (0.7 inches) | 90% | low |
February Weather | -15°C (5°F) | 16 mm (0.6 inches) | 93% | low |
March Weather | -6°C (22°F) | 24 mm (1.0 inches) | 92% | moderate |
April Weather | 2°C (35°F) | 34 mm (1.3 inches) | 80% | moderate |
May Weather | 11°C (52°F) | 44 mm (1.7 inches) | 69% | high |
June Weather | 15°C (60°F) | 112 mm (4.4 inches) | 68% | very high |
July Weather | 18°C (64°F) | 104 mm (4.1 inches) | 80% | very high |
August Weather | 16°C (61°F) | 55 mm (2.2 inches) | 80% | high |
September Weather | 10°C (50°F) | 40 mm (1.6 inches) | 76% | high |
October Weather | 2°C (36°F) | 28 mm (1.1 inches) | 82% | moderate |
November Weather | -6°C (21°F) | 29 mm (1.2 inches) | 86% | low |
December Weather | -11°C (12°F) | 18 mm (0.7 inches) | 94% | low |