Last updated: June 18, 2025
In September, the average temperature in Black Diamond, Canada hovers around 10°C (51°F). Expect a chilly minimum of -4°C (26°F) and the occasional spike up to a warm 32°C (90°F). This month brings about 47 mm (1.9 in) of precipitation spread over 9 days, contributing to an average humidity level of 74%. Keep your umbrella handy and dress in layers!
In September in Black Diamond, the average temperature is 10°C (51°F). Maximums can reach 32°C (90°F), and minimums can be as low as -4°C (26°F). Be prepared for a wide range of temperatures, making it essential to pack both warm and cool clothing for your travels.
In Black Diamond in September, the precipitation amount is 47 mm (1.9 in) spread over a period of 9 days.
In Black Diamond in September humidity is 74%. With an average temperature of 10°C (51°F), this humidity feels like a damp chill enveloping you, making travel a bit uncomfortable as the cold air clings to your skin, and you may find yourself wishing you had packed an extra layer to stay warm and dry.
In Black Diamond 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 Black Diamond.
UV Risk Categories
Weather in Black Diamond varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Black Diamond, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -7°C (20°F) | 9 mm (0.4 inches) | 91% | low |
| February Weather | -10°C (14°F) | 31 mm (1.2 inches) | 93% | moderate |
| March Weather | -3°C (27°F) | 31 mm (1.2 inches) | 88% | moderate |
| April Weather | 2°C (36°F) | 47 mm (1.8 inches) | 84% | high |
| May Weather | 9°C (49°F) | 69 mm (2.7 inches) | 80% | very high |
| June Weather | 14°C (58°F) | 82 mm (3.2 inches) | 79% | very high |
| July Weather | 16°C (62°F) | 70 mm (2.7 inches) | 80% | very high |
| August Weather | 16°C (61°F) | 51 mm (2.0 inches) | 77% | very high |
| September Weather | 10°C (51°F) | 47 mm (1.9 inches) | 74% | high |
| October Weather | 3°C (38°F) | 34 mm (1.3 inches) | 80% | moderate |
| November Weather | -2°C (29°F) | 27 mm (1.1 inches) | 86% | low |
| December Weather | -6°C (21°F) | 26 mm (1.0 inches) | 92% | low |