Fresno Weather in September

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

The climate in Fresno during September can be summarized as hot and very dry.

September is in the fall / autumn in Fresno and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 32°C (90°F), whilst at night 15°C (58°F) is normal.

Fresno weather averages (imperial / metric)
Daytime temperature 32.3°C 90.1°F
Nightly temperature 14.6°C 58.2°F
Average temperature 23.4°C 74.1°F
Daily sunshine 12.2 hrs
Avg rainfall 5 mm 0.2 ins
Rainy days 1 days
Sea temperature 16.8°C 62.3°F
Humidity 51%
Windspeed 10.8kph 7 mph

On average September is the 4th driest month of the year in Fresno with around 5mm 0.2 inches of rain making it a very dry time to visit.

On the flip side this corresponds to an average of 12.2 hours of sunshine per day.

September temperatures in Fresno

Fresno average temperature in September

September rainfall

Fresno average rain in September

September hourly sunshine

Fresno 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 Fresno 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

Fresno weather stats

Fresno weather statistics
Hottest month: July 36.5°C 97.7°F
Driest month: July 1mm 0ins
Sunniest month: July 14.6hrs
Coldest month: December 11.9°C 53.4°F
Wettest month: January 50mm 2ins
Map showing location of Fresno (36.74773, -119.77237) Fresno map pin © Google

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