September weather forecast and climate
Brighton, CO

What is the temperature in September in Brighton?

In Brighton, Colorado, in September, the average high-temperature is 78.8°F (26°C), and the average low-temperature is 46.2°F (7.9°C).

How much does it rain in Brighton in September?

Throughout September, in Brighton, 1.1" (26.7mm) of precipitation is accumulated.

When does it start snowing in Brighton?

September is the first month it typically snows in Brighton, Colorado. Throughout September, Brighton receives 0.5" (12.7mm) of snow.
Average temperature in September - Brighton, CO
  • Average high temperature in September: 26°C

The warmest month (with the highest average high temperature) is July (32°C).
The month with the lowest average high temperature is December (6.3°C).

  • Average low temperature in September: 7.9°C

The month with the highest average low temperature is July (14°C).
The coldest month (with the lowest average low temperature) is December (-9.3°C).

Average rainfall in September - Brighton, CO
  • Average rainfall in September: 26.7mm

The wettest month (with the highest rainfall) is May (57.4mm).
The driest month (with the lowest rainfall) is February (9.4mm).

Average snowfall in September - Brighton, CO
  • Average snowfall in September: 12.7mm

The month with the highest snowfall is March (177.8mm).
Months with the lowest snowfall are June, July and August (0mm).

Average daylight in September - Brighton, CO
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 15h).
The month with shortest days is December (Average daylight: 9.4h).