Average Weather in July in Walla Walla Washington, United States
Daily high temperatures increase by 6°F, from 87°F to 93°F, rarely falling below 75°F or exceeding 102°F.
Daily low temperatures increase by 5°F, from 60°F to 65°F, rarely falling below 53°F or exceeding 72°F.
The area averages less than 1" of rain for the whole month.
For reference, on July 31, the hottest day of the year, temperatures in Walla Walla typically range from 65°F to 93°F, while on December 29, the coldest day of the year, they range from 30°F to 40°F.