Washington Weather in July

The climate in Washington during July can be summarized as hot and damp.

July is in the summer in Washington and is typically the warmest month of the year. Daytime maximum temperatures average around a warm 33°C (91°F), whilst at night 19°C (66°F) is normal.

On average July is the 3rd wettest month of the year in Washington with around 102mm 4 inches of rain making it a damp time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.

On the flip side this corresponds to an average of 11.9 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 Washington in July 2025.