Silverton Weather in September

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

The climate in Silverton during September can be summarized as cool and reasonably dry.

September is in the fall / autumn in Silverton and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a cold 14°C (58°F), whilst at night -5°C (24°F) is normal.

Silverton weather averages (imperial / metric)
Daytime temperature 14.4°C 57.9°F
Nightly temperature -4.6°C 23.7°F
Average temperature 4.9°C 40.8°F
Daily sunshine 9.4 hrs
Avg rainfall 64 mm 2.5 ins
Rainy days 9 days
Sea temperature 18.8°C 65.9°F
Humidity 49%
Windspeed 15.8kph 10 mph

On average September is the 4th wettest month of the year in Silverton with around 64mm 2.5 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.4 hours of sunshine per day.

September temperatures in Silverton

Silverton average temperature in September

September rainfall

Silverton average rain in September

September hourly sunshine

Silverton 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 Silverton 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

Silverton weather stats

Silverton weather statistics
Hottest month: July 18.8°C 65.8°F
Driest month: June 38mm 1.5ins
Sunniest month: October 8.9hrs
Coldest month: January -3.3°C 26.1°F
Wettest month: August 86mm 3.4ins
Map showing location of Silverton (37.81194, -107.66451) Silverton map pin © Google

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