Golden Weather in September

What's the weather like in Golden (Colorado) in September 2025?

The climate in Golden during September can be summarized as mild and reasonably dry.

September is in the fall / autumn in Golden and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 22°C (72°F), whilst at night 4°C (39°F) is normal.

Golden weather averages (imperial / metric)
Daytime temperature 22.3°C 72.1°F
Nightly temperature 4°C 39.1°F
Average temperature 13.1°C 55.6°F
Daily sunshine 9.6 hrs
Avg rainfall 36 mm 1.4 ins
Rainy days 7 days
Sea temperature 18.2°C 64.7°F
Humidity 50%
Windspeed 15.5kph 10 mph

On average September is the 6th driest month of the year in Golden with around 36mm 1.4 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.6 hours of sunshine per day.

September temperatures in Golden

Golden average temperature in September

September rainfall

Golden average rain in September

September hourly sunshine

Golden average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Golden in September 2025.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Golden weather stats

Golden weather statistics
Hottest month: July 27.8°C 82°F
Driest month: January 19mm 0.7ins
Sunniest month: September 9.6hrs
Coldest month: January 5.3°C 41.5°F
Wettest month: May 64mm 2.5ins
Map showing location of Golden (39.75554, -105.2211) Golden map pin © Google

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