September Weather in Black Diamond, Canada

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!

September Temperature in Black Diamond

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.

September Weather in Black Diamond: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Black Diamond, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Black Diamond, September typically has an average temperature of 10°C (51°F), with highs reaching up to 32°C (90°F) and lows dropping to around -4°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec201427364957626151382920
Data source: Temperature data for Black Diamond generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Black Diamond

In Black Diamond in September, the precipitation amount is 47 mm (1.9 in) spread over a period of 9 days.

September Precipitation Trends in Black Diamond

The chart displays monthly precipitation patterns in Black Diamond, 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 Black Diamond, September typically receives around 47 mm (1.9 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec93131476982705147342726
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Black Diamond

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.

September Average Humidity in Black Diamond

This chart illustrates the average monthly humidity levels in Black Diamond, 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 Black Diamond is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%93%88%84%80%79%80%77%74%80%86%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Black Diamond

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.

Maximum UV Index Levels in Black Diamond for September

The chart shows the monthly maximum UV Index (UVI) for Black Diamond 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 Black Diamond typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235688987421
Data source: Black Diamond 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 Black Diamond Compares to Other Months

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.

This table compares monthly weather conditions in Black Diamond, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
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 Weather2°C (36°F)47 mm (1.8 inches)84%high
May Weather9°C (49°F)69 mm (2.7 inches)80%very high
June Weather14°C (58°F)82 mm (3.2 inches)79%very high
July Weather16°C (62°F)70 mm (2.7 inches)80%very high
August Weather16°C (61°F)51 mm (2.0 inches)77%very high
September Weather10°C (51°F)47 mm (1.9 inches)74%high
October Weather3°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

Compare Black Diamond's Climate with Cities Worldwide