Hyannis Weather in July

The climate in Hyannis during July can be summarized as warm and reasonably dry.

July is in the summer in Hyannis and is typically the warmest month of the year. Daytime maximum temperatures average around a comfortable 31°C (88°F), whilst at night 14°C (58°F) is normal.

On average July is the 3rd wettest month of the year in Hyannis with around 72mm 2.8 inches of rain making it a reasonably dry 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 11.8 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 Hyannis in July 2024.