March in Modesto averages a daily high of 19.9°C with nights around 7.4°C. Expect roughly 8.2 wet days totalling 43.5mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Modesto is April–May.
Based on MODESTO AIRPORT, CA US (4km), 1995–2024. 30 years of March data.