Maricopa Weather in September

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

September is in the fall / autumn in Maricopa and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a warm 37°C (99°F), whilst at night 20°C (69°F) is normal.

On average September is the 5th wettest month of the year in Maricopa with around 19mm 0.7 inches of rain making it a dry time to visit. This rainfall is typically spread over 3 days, although this may vary considerably.

On the flip side this corresponds to an average of 11.7 hours of sunshine per day.

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 Maricopa in September 2025.