Lancaster Weather in September

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

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

September is in the fall / autumn in Lancaster and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 32°C (89°F), whilst at night 14°C (57°F) is normal.

Lancaster weather averages (imperial / metric)
Daytime temperature 31.8°C 89.2°F
Nightly temperature 13.7°C 56.6°F
Average temperature 22.7°C 72.9°F
Daily sunshine 10.8 hrs
Avg rainfall 4 mm 0.1 ins
Rainy days 2 days
Sea temperature 18.6°C 65.5°F
Humidity 56%
Windspeed 12.2kph 8 mph

On average September is the 5th driest month of the year in Lancaster with around 4mm 0.1 inches of rain making it a very dry time to visit.

On the flip side this corresponds to an average of 10.8 hours of sunshine per day.

September temperatures in Lancaster

Lancaster average temperature in September

September rainfall

Lancaster average rain in September

September hourly sunshine

Lancaster 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 Lancaster 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

Lancaster weather stats

Lancaster weather statistics
Hottest month: July 36.3°C 97.3°F
Driest month: June 1mm 0ins
Sunniest month: June 12.6hrs
Coldest month: December 13.1°C 55.6°F
Wettest month: January 32mm 1.3ins
Map showing location of Lancaster (34.69804, -118.13674) Lancaster map pin © Google

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