Manteca Weather in September

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

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

September is in the fall / autumn in Manteca and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 31°C (87°F), whilst at night 13°C (56°F) is normal.

Manteca weather averages (imperial / metric)
Daytime temperature 30.8°C 87.4°F
Nightly temperature 13.3°C 55.9°F
Average temperature 22°C 71.6°F
Daily sunshine 11.7 hrs
Avg rainfall 7 mm 0.3 ins
Rainy days 1 days
Sea temperature 14.9°C 58.9°F
Humidity 55%
Windspeed 13.7kph 9 mph

On average September is the 5th driest month of the year in Manteca 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 11.7 hours of sunshine per day.

September temperatures in Manteca

Manteca average temperature in September

September rainfall

Manteca average rain in September

September hourly sunshine

Manteca 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 Manteca 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

Manteca weather stats

Manteca weather statistics
Hottest month: July 33.4°C 92.1°F
Driest month: July 1mm 0ins
Sunniest month: July 13.9hrs
Coldest month: December 11.9°C 53.4°F
Wettest month: January 63mm 2.5ins
Map showing location of Manteca (37.79743, -121.21605) Manteca map pin © Google

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