Potomac Weather in July

The climate in Potomac during July can be summarized as hot, humid and a little damp.

July is in the summer in Potomac and is typically the warmest month of the year. Daytime maximum temperatures average around a muggy 31°C (87°F), whilst at night 19°C (66°F) is normal.

On average July is the 3rd wettest month of the year in Potomac with around 94mm 3.7 inches of rain making it a a little 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 9.7 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 Potomac in July 2024.