May in Arvada averages a daily high of 21.6°C with nights around 5.8°C. Expect roughly 10.2 wet days totalling 73.3mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Arvada is May–June.
Based on WHEAT RIDGE 2, CO US (3.9km), 1995–2024. 28 years of May data.