March in Riverside averages a daily high of 23.3°C with nights around 8.4°C. Expect roughly 4.3 wet days totalling 31.4mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Riverside is October–May.
Based on RIVERSIDE FIRE STATION 3, CA US (0.8km), 1995–2024. 14 years of March data.