Nevada City Weather in September

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

The climate in Nevada City during September can be summarized as warm and dry.

September is in the fall / autumn in Nevada City and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a comfortable 29°C (84°F), whilst at night 11°C (51°F) is normal.

Nevada City weather averages (imperial / metric)
Daytime temperature 29°C 84.2°F
Nightly temperature 10.8°C 51.4°F
Average temperature 19.9°C 67.8°F
Daily sunshine 12.4 hrs
Avg rainfall 21 mm 0.8 ins
Rainy days 3 days
Sea temperature 14.8°C 58.7°F
Humidity 52%
Windspeed 11.9kph 7 mph

On average September is the 4th driest month of the year in Nevada City with around 21mm 0.8 inches of rain making it a dry time to visit. This rainfall is typically spread over 3 days, although this may vary considerably.

On the flip side this corresponds to an average of 12.4 hours of sunshine per day.

September temperatures in Nevada City

Nevada City average temperature in September

September rainfall

Nevada City average rain in September

September hourly sunshine

Nevada City 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 Nevada City 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

Nevada City weather stats

Nevada City weather statistics
Hottest month: July 32°C 89.6°F
Driest month: July 2mm 0.1ins
Sunniest month: July 15hrs
Coldest month: January 11.7°C 53.1°F
Wettest month: January 256mm 10.1ins
Map showing location of Nevada City (39.26156, -121.01606) Nevada City map pin © Google

Locations nearby

Top United States locations