Roseville Weather in September

What's the weather like in Roseville (California) in September 2025?

The climate in Roseville during September can be summarized as warm and very dry.

September is in the fall / autumn in Roseville and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 31°C (88°F), whilst at night 13°C (56°F) is normal.

Roseville weather averages (imperial / metric)
Daytime temperature 30.9°C 87.6°F
Nightly temperature 13.1°C 55.6°F
Average temperature 22°C 71.6°F
Daily sunshine 12.5 hrs
Avg rainfall 8 mm 0.3 ins
Rainy days 2 days
Sea temperature 15°C 58.9°F
Humidity 54%
Windspeed 12.2kph 8 mph

On average September is the 4th driest month of the year in Roseville with around 8mm 0.3 inches of rain making it a very dry time to visit.

On the flip side this corresponds to an average of 12.5 hours of sunshine per day.

September temperatures in Roseville

Roseville average temperature in September

September rainfall

Roseville average rain in September

September hourly sunshine

Roseville 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 Roseville 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

Roseville weather stats

Roseville weather statistics
Hottest month: July 34.3°C 93.7°F
Driest month: July 2mm 0.1ins
Sunniest month: July 15.3hrs
Coldest month: January 11.1°C 52°F
Wettest month: January 110mm 4.3ins
Map showing location of Roseville (38.75212, -121.28801) Roseville map pin © Google

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