September in West Valley City averages a daily high of 27.2°C with nights around 13.1°C. Expect roughly 5.3 wet days totalling 25.9mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit West Valley City is May–June.
Based on SALT LAKE CITY INTERNATIONAL AIRPORT, UT US (9.3km), 1995–2024. 30 years of September data.