May in Merced averages a daily high of 28.4°C with nights around 11.3°C. Rain is rare — about 2.4 wet days and 16.1mm across the month. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Merced is April–May.
Based on MERCED, CA US (3.3km), 1995–2024. 24 years of May data.