Perris Weather in September

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

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

September is in the fall / autumn in Perris and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a comfortable 29°C (85°F), whilst at night 14°C (57°F) is normal.

Perris weather averages (imperial / metric)
Daytime temperature 29.4°C 84.9°F
Nightly temperature 13.8°C 56.8°F
Average temperature 21.6°C 70.9°F
Daily sunshine 10.1 hrs
Avg rainfall 8 mm 0.3 ins
Rainy days 2 days
Sea temperature 20.4°C 68.8°F
Humidity 63%
Windspeed 13kph 8 mph

On average September is the 4th driest month of the year in Perris 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 10.1 hours of sunshine per day.

September temperatures in Perris

Perris average temperature in September

September rainfall

Perris average rain in September

September hourly sunshine

Perris 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 Perris 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

Perris weather stats

Perris weather statistics
Hottest month: August 31.9°C 89.4°F
Driest month: June 2mm 0.1ins
Sunniest month: August 11.5hrs
Coldest month: January 17.1°C 62.8°F
Wettest month: January 71mm 2.8ins
Map showing location of Perris (33.78252, -117.22865) Perris map pin © Google

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