Portland Weather in July

The climate in Portland during July can be summarized as warm and damp.

July is in the summer in Portland and is typically the warmest month of the year. Daytime maximum temperatures average around a comfortable 29°C (85°F), whilst at night 17°C (62°F) is normal.

On average July is the wettest month of the year in Portland with around 103mm 4 inches of rain making it a damp time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.

On the flip side this corresponds to an average of 11 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 Portland in July 2025.