Last updated: June 18, 2025
In Rossland, Canada, the average temperature in September hovers around 14°C (57°F), making it a mild time of year. However, temperatures can swing between a chilly -1°C (31°F) and a warm 33°C (91°F). Expect about 56 mm (2.2 in) of precipitation over approximately 8 days, with average humidity levels sitting at 74%. Enjoy the varied climate while planning your activities!
In September in Rossland, the average temperature is 14°C (57°F). Maximums can reach 33°C (91°F), and minimums can drop as low as -1°C (31°F). This wide temperature range makes it essential for travelers to pack accordingly for both warm days and cool nights.
In Rossland in September, the precipitation amount is 56 mm (2.2 in) over the course of 8 days.
In Rossland in September, humidity is 74%. With an average temperature of 14°C (57°F), this humidity feels like a warm, damp blanket wrapping around you, making it slightly uncomfortable for traveling, as you may find yourself quickly sweating and in need of frequent breaks to cool down.
In Rossland 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 Rossland.
UV Risk Categories
Weather in Rossland varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Rossland, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (24°F) | 94 mm (3.7 inches) | 90% | low |
| February Weather | -5°C (24°F) | 80 mm (3.2 inches) | 91% | moderate |
| March Weather | 1°C (34°F) | 84 mm (3.3 inches) | 89% | moderate |
| April Weather | 5°C (42°F) | 83 mm (3.3 inches) | 85% | high |
| May Weather | 12°C (54°F) | 68 mm (2.7 inches) | 82% | very high |
| June Weather | 16°C (61°F) | 53 mm (2.1 inches) | 81% | very high |
| July Weather | 20°C (69°F) | 17 mm (0.7 inches) | 84% | very high |
| August Weather | 20°C (68°F) | 28 mm (1.1 inches) | 75% | very high |
| September Weather | 14°C (57°F) | 56 mm (2.2 inches) | 74% | high |
| October Weather | 5°C (42°F) | 79 mm (3.1 inches) | 85% | moderate |
| November Weather | 1°C (33°F) | 102 mm (4.0 inches) | 88% | low |
| December Weather | -4°C (25°F) | 103 mm (4.1 inches) | 93% | low |