Walla Walla Weather in July

The climate in Walla Walla during July can be summarized as hot and dry.

July is in the summer in Walla Walla and is typically the warmest month of the year. Daytime maximum temperatures average around a comfortable 32°C (89°F), whilst at night 16°C (60°F) is normal.

On average July is the driest month of the year in Walla Walla with around 12mm 0.5 inches of rain making it a dry time to visit. This rainfall is typically spread over 3 days, although this may vary considerably.

On the flip side this corresponds to an average of 13.4 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 Walla Walla in July 2025.