Murrieta Weather in September

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

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

September is in the fall / autumn in Murrieta and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a comfortable 28°C (83°F), whilst at night 14°C (57°F) is normal.

Murrieta weather averages (imperial / metric)
Daytime temperature 28.4°C 83°F
Nightly temperature 13.9°C 56.9°F
Average temperature 21.1°C 70°F
Daily sunshine 10 hrs
Avg rainfall 9 mm 0.4 ins
Rainy days 2 days
Sea temperature 20.4°C 68.8°F
Humidity 65%
Windspeed 13.3kph 8 mph

On average September is the 4th driest month of the year in Murrieta with around 9mm 0.4 inches of rain making it a very dry time to visit.

On the flip side this corresponds to an average of 10 hours of sunshine per day.

September temperatures in Murrieta

Murrieta average temperature in September

September rainfall

Murrieta average rain in September

September hourly sunshine

Murrieta 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 Murrieta 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

Murrieta weather stats

Murrieta weather statistics
Hottest month: August 30.5°C 86.9°F
Driest month: June 2mm 0.1ins
Sunniest month: August 11.4hrs
Coldest month: January 16.8°C 62.2°F
Wettest month: January 76mm 3ins
Map showing location of Murrieta (33.55391, -117.21392) Murrieta map pin © Google

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