Black Diamond Weather in September

September in Black Diamond averages 19°C (66°F) during the day and 4°C (39°F) at night. Around 56 mm (2.2 in) of rainfall is typical for this time of year.

Rainfall in Black Diamond in September

Historically, September sees about 9 days of rain, with a monthly average of 56 mm (2.2 in). Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.

Temperature in Black Diamond in September

September in Black Diamond brings pleasant temperatures, with highs of 19°C (66°F) and nights around 4°C (39°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights drop to 4°C (39°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.

Sunshine in Black Diamond in September

The month enjoys around 209 hours of sunshine, creating mostly sunny days with good weather conditions.

For Black Diamond itself, July and August generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.