March in Olympia averages a daily high of 11.9°C with nights around 1.3°C. Expect roughly 19.2 wet days totalling 142.8mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Olympia is July–August.
Based on OLYMPIA AIRPORT, WA US (7.9km), 1995–2024. 30 years of March data.