May in Chino averages a daily high of 26.8°C with nights around 11.5°C. Rain is rare — about 1.3 wet days and 4.9mm across the month. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Chino is March–May.
Based on CHINO AIRPORT, CA US (7.2km), 1995–2024. 26 years of May data.