Lake Isabella Weather in September

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

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

September is in the fall / autumn in Lake Isabella and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 29°C (85°F), whilst at night 13°C (55°F) is normal.

Lake Isabella weather averages (imperial / metric)
Daytime temperature 29.3°C 84.7°F
Nightly temperature 12.8°C 55°F
Average temperature 21°C 69.8°F
Daily sunshine 11 hrs
Avg rainfall 7 mm 0.3 ins
Rainy days 2 days
Sea temperature 17.7°C 63.8°F
Humidity 50%
Windspeed 12.6kph 8 mph

On average September is the 4th driest month of the year in Lake Isabella with around 7mm 0.3 inches of rain making it a very dry time to visit.

On the flip side this corresponds to an average of 11 hours of sunshine per day.

September temperatures in Lake Isabella

Lake Isabella average temperature in September

September rainfall

Lake Isabella average rain in September

September hourly sunshine

Lake Isabella 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 Lake Isabella 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

Lake Isabella weather stats

Lake Isabella weather statistics
Hottest month: July 34.1°C 93.4°F
Driest month: June 4mm 0.2ins
Sunniest month: July 12.8hrs
Coldest month: December 9.9°C 49.8°F
Wettest month: January 46mm 1.8ins
Map showing location of Lake Isabella (35.61801, -118.47314) Lake Isabella map pin © Google

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