July in Pasco averages a daily high of 33.5°C with nights around 17.4°C. Rain is rare — about 1.7 wet days and 3.3mm across the month. Generally workable, with some weather to plan around.
Across the year, the best time to visit Pasco is May–June.
Based on KENNEWICK, WA US (3.2km), 1995–2024. 30 years of July data.