Waltham Weather in July

The climate in Waltham during July can be summarized as warm and a little damp.

July is in the summer in Waltham and is typically the warmest month of the year. Daytime maximum temperatures average around a comfortable 28°C (82°F), whilst at night 16°C (61°F) is normal.

On average July is the 2nd driest month of the year in Waltham with around 82mm 3.2 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.

On the flip side this corresponds to an average of 10.1 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 Waltham in July 2025.